MAXIM MAX4358 User Manual

General Description
The MAX4358 is a 32 16 highly integrated video crosspoint switch matrix with input and output buffers and On-Screen Display (OSD) Insertion. This device operates from dual ±3V to ±5V supplies or from a sin­gle +5V supply. Digital logic is supplied from an inde­pendent single +2.7V to +5.5V supply. Individual outputs can be switched between an input video signal source and OSD information through an internal, dedi­cated fast 2:1 mux (40ns switching times) located before the output buffer. All inputs and outputs are buffered, with all outputs able to drive standard 75 reverse-terminated video loads.
The switch matrix configuration and output buffer gain are programmed through an SPI/QSPI™-compatible, three-wire serial interface and initialized with a single update signal. The unique serial interface operates in two modes facilitating both fast updates and initializa­tion. On power-up, all outputs are initialized in the dis­abled state to avoid output conflicts in large-array configurations.
Superior flexibility, high integration, and space-saving packaging make this nonblocking switch matrix ideal for routing video signals in security and video-on­demand systems.
The MAX4358 is available in a 144-pin TQFP package and specified over an extended -40°C to +85°C tem­perature range. The MAX4358 evaluation kit is available to speed designs.
Applications
Security Systems
Video Routing Video-On-Demand Systems
Features
32 ✕16 Nonblocking Matrix with Buffered Inputs
and Outputs
Operates from a ±3V, ±5V, or +5V Supply
Fast Switching (40ns) 2:1 OSD Insertion Mux
Each Output Individually Addressable
Individually Programmable Output Buffer Gain
(A
V
= +1V/V or +2V/V)
High-Impedance Output Disable for Wired-OR
Connections
0.1dB Gain Flatness to 12MHz
Minimum -62dB Crosstalk, -110dB Isolation at
6MHz
0.05%/0.1° Differential Gain/Differential Phase
Error
Low 195mW Power Consumption (0.38mW per
point)
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-2111; Rev 0; 8/01
EVALUATION KIT
AVAILABLE
Pin Configuration appears at end of data sheet.
SPI/QSPI are trademarks of Motorola, Inc.
OUT0
OSDFILL0
OSDKEY0
OSDFILL1
OSDKEY1
OSDFILL15
OSDKEY15
OUT1
OUT15
IN0
CAMERAS
IN1
IN31
MONITOR
MONITOR
MONITOR
MAX4358
OSD GENERATOR
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuit
MAX4358
32 x 16
SWITCH MATRIX
POWER-ON
RESET
SERIAL
INTERFACE
THERMAL
SHUTDOWN
DECODE LOGIC
DISABLE ALL OUTPUTS
LATCHES
512
16
16
MATRIX REGISTER
112 BITS
UPDATE REGISTER
16 BITS
2:1 OSD MUX
ENABLE/DISABLE
AV*
AV*
AV*
AV*
*A
V
= +1V/V OR +2V/V
A0-A3 MODE
IN0
IN1
IN2
IN31
DIN
SCLK
UPDATE
CE
RESET
OSDKEY0 OSDKEY15
OSDKEY1
OSDFILL0 OSDFILL15
OUT0
OUT1
OUT2
OUT15
V
CC
V
EE
DGND
V
DD
DOUT
AOUT
OSDFILL1
AGND
Functional Diagram
PART TEMP RANGE PIN PACKAGE
MAX4358ECE -40°C to +85°C 144 TQFP
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V
(VCC= +5V, VEE= -5V, VDD= +5V, AGND = DGND = 0, VIN_= 0, V
OSDFILL
_ = 0, RL= 150to AGND, and TA= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Analog Supply Voltage (VCC- VEE) .....................................+11V
Digital Supply Voltage (V
DD
- DGND) ...................................+6V
Analog Supplies to Analog Ground
(V
CC
- AGND) and (AGND - VEE) ..................................... +6V
Analog Ground to Digital Ground .........................-0.3V to +0.3V
IN__, OSDFILL__ Voltage Range .... (V
CC
+ 0.3V) to (VEE- 0.3V)
OUT__ Short-Circuit Duration to AGND, V
CC
, or VEE....Indefinite
SCLK, CE, UPDATE, MODE, A_, DIN, DOUT,
RESET, AOUT, OSDKEY__..........(V
DD
+ 0.3V) to (DGND - 0.3V)
Current Into Any Analog Input Pin (IN_, OSDFILL_).........±50mA
Current Into Any Analog Output Pin (OUT_).....................±75mA
Continuous Power Dissipation (T
A
= +70°C)
144-Pin TQFP (derate 28.6mW/°C above +70°C).........2.23W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
PARAMETER SYMBOL
Operating Supply Voltage Range
Logic Supply Voltage Range
V
CC
V
VDD to DGND
­Guaranteed by PSRR test
EE
CONDITIONS
(VEE + 2.5V) < V
= +1V/V, RL = 150
A
V
MIN
4.5
2.7
< (VCC - 2.5V),
IN
_
0.97
TYP
MAX UNITS
0.995
10.5
5.5
1
V
V
Gain (Note 1)
Gain Matching (Channel to Channel)
Temperature Coefficient of Gain TC
Input Voltage Range
VIN_
(VEE + 2.5V) < V
= +1V/V, RL = 10k
A
V
A
(VEE + 3.75V) < V
V
AV = +2V/V, RL = 150
(VEE + 3.75V) < V AV = +2V/V, RL = 10k
(VEE + 1V) < V AV = +1V/V, RL = 10k
RL = 10k
RL = 150
AV
AV = +1V/V
AV = +2V/V
< (VCC - 2.5V),
IN
_
< (VCC - 3.75V),
IN
_
< (VCC - 3.75V)
IN
_
< (VCC - 1.2V),
IN
_
RL = 10k
RL = 150
RL = 10k
RL = 150
0.99
1.92
1.94
0.95
V
+ 1
E E
V
E E
VEE + 3
V
+ 2.5
+
E E
3.75
0.999
1.996
2.008
0.994
0.5
0.5
10
1
2.08
2.06
1
1.5
2
V
- 1.2
C C
V
- 2.5
C C
V
- 3.1
C C
V
-
C C
3.75
V/V
%
ppm/°C
V
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V (continued)
(VCC= +5V, VEE= -5V, VDD= +5V, AGND = DGND = 0, VIN_= 0, V
OSDFILL
_ = 0, RL= 150to AGND, and TA= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL
Output Voltage Range
Input Bias Current
Input Resistance
Output Offset Voltage
Output Short-Circuit Current
Enabled Output Impedance
Output Leakage Current, Disable Mode
DC Power-Supply Rejection Ratio
Quiescent Supply Current
V
OUT
I
R
V
OFFSET
I
SC
Z
OUT
I
OD
PSRR 4.5V < (V
I
CC
I
EE
RL = 10k
RL = 150
B
(VEE + 1V) < V
IN
_
AV = +1V/V
AV = +2V/V
Sinking or sourcing, RL = 1
(VEE + 1V) < V
(VEE + 1V) < V
CC
RL =
RL =
CONDITIONS
< (VCC - 1.2V)
IN
_
< (VCC - 1.2V)
IN
_
< (VCC - 1.2V)
OUT
_
- VEE) < 10.5V
Outputs enabled, T
A
Outputs enabled
Outputs disabled
Outputs enabled, T
A
Outputs enabled
Outputs disabled
MIN
VEE + 1
V
E E
+ 2.5
10 ±5
60
= +25°C
60
= +25°C
55
TYP
4
±10
±40
0.2
0.004
70
110
105
MAX UNITS
V
- 1.2
C C
V
- 2.5
C C
11
±20
±40
1
160
185
80
160
185
80
µA
M
mV
mA
µA
dB
mA
V
V
I
DD
4
8
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
4 _______________________________________________________________________________________
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V
(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_ = 0, V
OSDFILL
_ = 0, RL= 150to AGND, and TA= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage
Range
Logic Supply Voltage Range
Gain (Note 1) A
V
CC
V
DGND
DD
- V
V
Guaranteed by PSRR test 4.5 10.5 V
EE
to
(V
+ 1V) < V
EE
A
= +1V/V, RL = 150
V
(V
+ 1V) < V
EE
= +1V/V, RL = 10k
A
V
(V
+ 2V) < V
EE
= +2V/V, RL = 150
A
V
(V
+ 2V) < V
EE
= +2V/V, RL = 10k
A
V
2.7 5.5 V
< (VCC - 1.2V),
IN
_
< (VCC - 1.2V),
IN
_
< (VCC - 2.1V),
IN
_
< (VCC - 2.1V)
IN
_
0.94 0.983 1
0.96 0.993 1
1.92 1.985 2.08
1.94 2.00 2.06
V/V
Gain Matching (Channel to Channel)
Temperature Coefficient of
Gain
TC
Input Voltage Range V
Output Voltage Range V
Input Bias Current I Input Resistance R
Output Offset Voltage
V
OFFSET
AV
IN
OUT
B
IN
R
= 10k 0.5 1.5
L
RL = 150 0.5 2
10 ppm/°C
VCC -
1.2
VCC -
1.2
VCC -
2.1
VCC -
2.1
VCC -
1.2
VCC -
1.2
_
RL = 10k VEE + 1
AV = +1V/V
R
= 150 VEE + 1
L
R
= 10k VEE + 2
L
A
= +2V/V
V
R
= 150 VEE + 2
L
R
= 10k VEE + 1
L
R
= 150 VEE + 1
L
4 11 µA
(V
+ 1V) < V
EE
A
= +1V/V ±5 ±20
V
A
= +2V/V ±10 ±40
V
< (VCC - 1.2V) 10 M
IN
_
%
V
V
mV
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
_______________________________________________________________________________________ 5
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V (continued)
(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_ = 0, V
OSDFILL
_ = 0, RL= 150to AGND, and TA= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
DC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY +5V
(VCC= +5V, VEE= 0, VDD= +5V, AGND = DGND = 0, VIN_ = V
OSDFILL
_ = +1.75V, AV= +1V/V, RL= 150to AGND, and TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Short-Circuit Current I
Enabled Output Impedance Z
Output Leakage Current,
Disable Mode
DC Power-Supply Rejection
Ratio
Quiescent Supply Current
SC
OUT
I
OD
PSRR 4.5V < (V
I
CC
I
EE
I
DD
Sinking or sourcing, R
(V
+ 1V) < V
EE
(V
+ 1V) < V
EE
R
=
L
RL =
CC
< (V
IN
_
< (VCC - 1.2V) 0.004 1 µA
OUT
_
- V
) < 10.5V 60 75 dB
EE
= 1 ±40 mA
L
- 1.2V) 0.2
CC
Outputs enabled 95
Outputs disabled 50
Outputs enabled 90
Outputs disabled 45
3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage
Range
Logic-Supply Voltage Range
Gain (Note 1) A
Gain Matching (Channel to Channel)
Temperature Coefficient of Gain TC
Input Voltage Range V
Output Voltage Range
V
CC
V
to
DD
DGND
V
AV
IN
V
OUT
Guaranteed by PSRR test 4.5 5.5 V
2.7 5.5 V
(V
+ 1V) < V
EE
A
= +1V/V, RL = 150
V
(V
+ 1V) < V
EE
A
= +1V/V, RL = 10k
V
R
= 10k 0.5 3
L
RL = 150 0.5 3
10
A
= +1V/V
V
AV = +1V/V,
R
= 10k
L
A
= +1V/V,
V
R
= 150
L
< (VCC - 2.5V),
IN
< (VCC - 1.2V),
IN
R
R
= 10k
L
= 150
L
0.94 0.995 1
0.94 0.995 1
V
+
EE
1
V
+
EE
1
V
+
EE
1
V
+
EE
1
VCC -
1.2
VCC -
2.5
VCC -
1.2
VCC -
2.5
mA
V
%
ppm/°
C
V
V
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
6 _______________________________________________________________________________________
DC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY +5V (continued)
(VCC= +5V, VEE= 0, VDD= +5V, AGND = DGND = 0, VIN_ = V
OSDFILL
_ = +1.75V, AV= +1V/V, RL= 150to AGND, and TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Bias Current I Input Resistance R
Output Offset Voltage
Output Short-Circuit Current I Enabled Output Impedance Z
Output Leakage Current,
Disable Mode
DC Power-Supply Rejection
Ratio
V
OFFSET AV
SC
OUT
I
OD
PSRR 4.5V < V
I
CC
4 11 µA
B
V
IN
EE
= +1V/V ±10 ±40 mV
Sinking or sourcing, R (V
EE
(V
EE
R
=
L
Quiescent Supply Current
I
I
EE
DD
R
=
L
4
+ 1V < V
+ 1V) < V
+ 1V) < V
IN
CC - VEE
Outputs enabled, T Outputs disabled 35 Outputs enabled, T Outputs disabled 30
- 1.2V 10 M
< V
CC
= 1
L
< (VCC - 1.2V)
IN
< (VCC - 1.2V) 0.004 1 µA
OUT
– _
< 5.5V 50 65 dB
= +25°C 85
A
= +25°C 80
A
±35
0.2
mA
mA
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
_______________________________________________________________________________________ 7
LOGIC-LEVEL CHARACTERISTICS
(VCC- V
EE)
= +4.5V to +10.5V, VDD= +2.7V to +5.5V, AGND = DGND = 0, VIN_ = V
OSDFILL
_ = 0, RL= 150to AGND, and
TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)
AC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V
(VCC= +5V, VEE= -5V, VDD= +5V, AGND = DGND = 0, VIN_ = V
OSDFILL
_ = 0, RL= 150to AGND, and TA= +25°C, unless other-
wise noted.)
Input Voltage High Level V
Input Voltage Low Level
Input Current High Level
Input Current Low Level
Output Voltage High Level
Output Voltage Low Level
Output Current High Level
Output Current Low Level
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VDD = +5.0V 3
IH
VDD = +3V 2
V
I
IH
I
IL
V
OH
V
OL
I
OH
I
OL
V
IL
VDD = +3V 0.6
V
VI < 1V
I
SOURCE
I
SOURCE
I
SINK
I
SINK
VDD = +5V, VO = +4.9V 1 4
VDD = +3V, V
VDD = +5V, VO = +0.1V 1 4
VDD = +3V, VO = +0.3V 1 8
= +5.0V 0.8
DD
> 2V
I
= 1mA, VDD = +5V 4.7 4.9
= 1mA, VDD = +3V 2.7 2.9
= 1mA, VDD = +5V 0.1 0.3
= 1mA, VDD = +3V 0.1 0.3
Excluding RESET -1 0.01 1 RESET -30 -20 Excluding RESET -1 0.01 1 RESET -300 -235
= +2.7V 1 8
OUT
V
V
µA
µA
V
V
mA
mA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
A
= +1V/V 95
Small-Signal -3dB Bandwidth
Medium-Signal -3dB Bandwidth
Large-Signal -3dB Bandwidth
Small-Signal 0.1dB Bandwidth
Medium-Signal
0.1dB Bandwidth
Large-Signal 0.1dB Bandwidth
BW
BW
BW
BW
BW
BW
0.1dB-SS
0.1dB-MS
0.1dB-LS
Slew Rate SR
SS
MS
LS
V
= 20mVp-p
OUT_
V
=
OUT_
200mVp-p
V
= 2Vp-p
OUT_
V
= 20mVp-p
OUT_
V
=
OUT_
200mVp-p
V
= 2Vp-p
OUT_
V
= 2V step,
OUT_
A
= +1V/V
V
V
= 2V step,
OUT_
A
= +2V/V
V
V
A
= +2V/V 70
V
A
= +1V/V 90
V
A
= +2V/V 70
V
A
= +1V/V 40
V
A
= +2V/V 50
V
A
= +1V/V 15
V
A
= +2V/V 15
V
A
= +1V/V 15
V
A
= +2V/V 15
V
A
= +1V/V 12
V
A
= +2V/V 12
V
150
160
MHz
MHz
MHz
MHz
MHz
MHz
V/µs
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
8 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V
(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_= V
OSDFILL
_ = 0, RL= 150to AGND, AV= +1V/V, and TA= +25°C,
unless otherwise noted.)
AC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V (continued)
(VCC= +5V, VEE= -5V, VDD= +5V, AGND = DGND = 0, VIN_ = V
OSDFILL
_ = 0, RL= 150to AGND, and TA= +25°C, unless other-
wise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 0 to 2V
V
OUT_
Settling Time t
Switching Transient (Glitch) (Note 3)
AC Power-Supply Rejection Ratio
Differential Gain Error (Note 4)
Differential Phase Error (Note 4)
S 0.1%
step
A
= +1V/V 50
V
AV = +2V/V 50
f = 100kHz 70
f = 1MHz 68
R
= 1k 0.01
L
RL = 150 0.05
R
= 1k 0.03
L
RL = 150 0.1
Crosstalk, All Hostile f = 6MHz -62 dB Off-Isolation, Input-to-Output f = 6MHz -110 dB Input Noise Voltage Density e Input Capacitance C Disabled Output
Capacitance
Capacitive Load at 3dB
Output Peaking
Output Impedance Z
n
IN
Amplifier in disable mode 3 pF
30 pF
OUT
BW = 6MHz 73 µV 5 pF
f = 6MHz
A
= +1V/V 60
V
A
= +2V/V 60
V
Output enabled 3 Output disabled 4k
ns
mV
dB
%
d eg r ees
RMS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
A
= +1V/V 90
Small-Signal
-3dB Bandwidth
Medium-Signal
-3dB Bandwidth
Large-Signal -3dB Bandwidth
Small-Signal
0.1dB Bandwidth
Medium-Signal
0.1dB Bandwidth
Large-Signal 0.1dB Bandwidth
BW
SS
BW
MS
BW
LS
BW
0.1dB-SS
BW
0.1dB-MS
BW
0.1dB-LS VOUT
V
=
OUT
_
20mVp-p
V
=
OUT
_
200mVp-p
V
= 2Vp-p
OUT
_
V
=
OUT_
20mVp-p
V
=
OUT
_
200mVp-p
= 2Vp-p
_
V
A
= +2V/V 65
V
A
= +1V/V 90
V
A
= +2V/V 65
V
A
= +1V/V 30
V
A
= +2V/V 35
V
A
= +1V/V 15
V
A
= +2V/V 15
V
A
= +1V/V 15
V
A
= +2V/V 15
V
A
= +1V/V 12
V
A
= +2V/V 12
V
MHz
MHz
MHz
MHz
MHz
MHz
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
_______________________________________________________________________________________ 9
AC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V (continued)
(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_= V
OSDFILL
_ = 0, RL= 150to AGND, AV= +1V/V, and TA= +25°C,
unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
= 2V step
_
OUT
Slew Rate SR
Settling Time t
S 0.1%
Switching Transient (Glitch) (Note 3)
AC Power-Supply Rejection Ratio
Differential Gain Error (Note 4)
Differential Phase Error (Note 4)
A
= +1V/V
V
= 2V step
V
OUT
_
A
= +2V/V
V
A
= +1V/V 60
V
= 0 to 2V step
O
f = 100kHz 60
f = 1MHz 40
R
= 1k 0.03
L
RL = 150 0.2
R
= 1k 0.08
L
RL = 150 0.2
V
A
= +2V/V 60
V
A
= +1V/V 15
V
AV = +2V/V 20
120
120
Crosstalk, All Hostile f = 6MHz -63 dB Off-Isolation, Input to Output f = 6MHz -112 dB Input Noise Voltage Density e Input Capacitance C
n
IN
_
BW = 6MHz 73 µV
5 pF
Disabled Output Capacitance Amplifier in disable mode 3 pF
Capacitive Load at 3dB
Output Peaking
Output Impedance Z
30 pF
OUT
f =
6MHz
Output enabled 3 Output disabled 4k
V/µs
ns
mV
dB
%
d eg r ees
RMS
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
10 ______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY +5V
(VCC= +5V, VEE= 0, VDD= +5V, AGND = DGND = 0, VIN_ = V
OSDFILL
_ = 1.75V, RL= 150to AGND, AV= +1V/V, and TA= +25°C,
unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX
Small-Signal
-3dB Bandwidth
Medium-Signal -3dB Bandwidth
Large-Signal
-3dB Bandwidth
Small-Signal
0.1dB Bandwidth
Medium-Signal
0.1dB Bandwidth
Large-Signal
0.1dB Bandwidth Slew Rate SR V
Settling Time t
Switching Transient (Glitch)
AC Power-Supply Rejection Ratio
Differential Gain Error (Note 4)
Differential Phase Error (Note 4)
BW
BW
BW
BW
SS
BW
MS
BW
LS
0.1dB-SS
0.1dB-MS
0.1dB-LS
S 0.1%
V
= 20mVp-p 90 MHz
OUT_
V
= 200mVp-p 90 MHz
OUT
V
= 1.5Vp-p 38 MHz
OUT
V
= 20mVp-p 12 MHz
OUT
V
= 200mVp-p 12 MHz
OUT
_
V
= 1.5Vp-p 12 MHz
OUT_
= 2V step, AV = +1V/V 100 V/µs
OUT
_
V
= 0 to 2V step 60 ns
OUT_
25 mV
f = 100kHz 70
f = 1MHz 69
R
= 1k 0.03
L
RL = 150 0.15
R
= 1k 0.06
L
RL = 150 0.2
Crosstalk, All Hostile f = 6MHz -63 dB
Off-Isolation, Input-to-
Output
Input Noise Voltage Input Capacitance C
Disabled Output
Capacitance
Capacitive Load at 3dB
Output Peaking
Output Impedance
f = 6MHz -110 dB
e
n
IN
_
BW = 6MHz 73 µV
Amplifier in disable mode 3 pF
30 pF
Z
OUT
f = 6MHz
5 pF
Output enabled 3 Output disabled 4k
UNITS
dB
%
d eg r ees
RMS
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 11
SWITCHING CHARACTERISTICS
((VCC- VEE) = +4.5V to +10.5V, VDD= +2.7V to +5.5V, DGND = AGND = 0, VIN_ = V
OSDFILL
_ = 0 for dual supplies, VIN_ =
V
OSDFILL
_ = +1.75V for single supply, RL= 150to AGND, CL= 100pF, AV= +1V/V, and TA= T
MIN
- T
MAX
, unless otherwise noted.
Typical values are at TA= +25°C. )
Note 1: Associated output voltage may be determined by multiplying the input voltage by the specified gain (A
V
)
and adding output
offset voltage. Gain is specified for IN_ and OSDFILL_ signal paths.
Note 2: Logic level characteristics apply to the following pins: DIN, DOUT, SCLK, CE, UPDATE, RESET, A3–A0, MODE, AOUT, and
OSDKEY_.
Note 3: Switching transient settling time is guaranteed by the settling time (t
S
) specification. Switching transient is a result of updat-
ing the switch matrix.
Note 4: Input test signal: 3.58MHz sine wave of amplitude 40IRE superimposed on a linear ramp (0 to 100IRE). IRE is a unit of
video-signal amplitude developed by the International Radio Engineers: 140IRE = 1.0V.
Note 5: All devices are 100% production tested at +25°C. Specifications over temperature limits are guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Delay: UPDATE to Video Out t
Delay: UPDATE to AOUT t
Delay: OSDKEY_ to Output
t
Delay: SCLK to DOUT Valid t
Delay: Output Disable t
Delay: Output Enable t
PdHOeVo VOUT
PdLOeVo
Setup: CE to SCLK t Setup: DIN to SCLK t Hold Time: SCLK to DIN t Minimum High Time: SCLK t Minimum Low Time: SCLK t Minimum Low Time: UPDATE t
Setup Time: UPDATE to SCLK t
Hold Time: SCLK to UPDATE t
Setup Time: MODE to SCLK t
Hold Time: MODE to SCLK t
Minimum Low Time: RESET t Delay: RESET t
PdUdVo
PdUdAo
PdOkVo/
t
PdOfVo
PdDo
SuCe
SuDi
HdDi
MnHCk
MnLCk
MnLUd
SuHUd
HdHUd
SuMd
HdMd
MnLRst
PdRst
V
= 0.5V step 200 450 ns
IN
MODE = 0, time to AOUT = low after
UPDATE = low
V
= +5V 40
V
OUT
= 0.5V step
DD
V
= +3V 60
DD
Logic state change in DOUT on active
SCLK edge
= 0.5V, 1k pulldown to AGND 300 800 ns
Output disabled, 1k pulldown to AGND,
= 0.5V
V
IN
100 ns 100 ns 100 ns 100 ns 100 ns 100 ns
Rising edge of UPDATE to falling edge of
SCLK
Falling edge of SCLK to falling edge of
UPDATE
Minimum time from clock edge to MODE
with valid data clocking
Minimum time from clock edge to MODE
with valid data clocking
300 ns 10k pulldown to AGND 600 ns
30 200 ns
30 200 ns
200 800 ns
100 ns
100 ns
100 ns
100 ns
ns
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
12 ______________________________________________________________________________________
Naming Conventions:
• All parameters with time units are given “t” designation, with appropriate subscript modifiers.
• Propagation delays for clocked signals are from active edge of clock.
• Propagation delay for level sensitive signals is from input to output at 50% point of a transition.
• Setup and Hold times are measured from 50% point of sig­nal transition to 50% point of clocking signal transition.
• Setup time refers to any signal that must be stable before active clock edge, even if signal is not latched or clocked itself.
• Hold time refers to any signal that must be stable during and after active clock edge, even if signal is not latched or clocked.
• Propagation delays to unobservable internal signals are modified to setup and hold designations applied to observ­able IO signals.
Symbol Definitions
SYMBOL TYPE DESCRIPTION
Ao Signal
Ce Signal Clock Enable (CE)
Ck Signal Clock (SCLK)
Di Signal Serial Data In (DIN)
Do Signal
Md Signal MODE
Oe Signal Output enable
Rst Signal Reset Input (RESET)
Ud Signal UPDATE
Vo Signal Video Out (OUT)
H Property
Hd Property Hold
L Property
Mn Property Minimum
Mx Property Maximum
Pd Property Propagation delay
Su Property Setup
Tr Property Transition
W Property Width
Address Valid Flag (AOUT)
Serial Data Output (DOUT)
High- or Low-to-High transition
Low- or High-to-Low transition
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 13
Figure 1. Timing Diagram
Timing Diagram
Ce: CE
Ck: SCLK
Di: DIN
Do: DOUT
Ud: UPDATE
Vo: OUT_
Ao: AOUT
Rst: RESET
t
PdHOeVo
Oe: OUTPUT ENABLE
IN_
t
t
PdDo
DATA AND CONTROL TIMING
t
SuCe
MnHCk
t
MnLCk
Hi-Z
OSD: KEY AND FILL TIMING
t
HdUd
t
PdLOeVo
t
SuDi
t
HdDi
t
MnLUd
t
PdUdVo
t
PdUdAo
VIDEO SOURCE
(SELECTED INPUT)
t
WTrVo
t
SuUd
t
t
HdCe
PdRstVo
t
MulRst
Hi-Z
TIMING PARAMETER DEFINITIONS NAME DESCRIPTION t
HdDi
t
MnHCk
t
MnLCk
t
MnLUd
t
SuHUd
Not Valid Setup Time: UPDATE to Clk with UPDATE Low t
HdHUd
Not Valid Hold Time: Clk to UPDATE with UPDATE Low t
PdDiDo
t
MnMd
t
MxTr
t
MnLRst
t
PdRstVo
TIMING PARAMETER DEFINITIONS
NAME DESCRIPTION
t
PdUdVo
t
PdUdAo
t
PdOkVo
t
PdOfVo
t
PdDo
t
PdHOeVo
t
PdLOeVo
t
SuCe
t
SuDi
Hold Time: Clock to Data In Min High Time: Clk Min Low Time: Clk Min Low Time: Update Setup Time: UPDATE to Clk with UPDATE High
Hold Time: Clk to UPDATE with UPDATE high
Asynchronous Delay: Data In to Data Out Min Low Time: MODE Max Rise Time: Clk, Update Min Low Time: Reset Delay: Reset to Video Output
Delay: Update to Video Out Delay: UPDATE to Aout Delay: OSD Key to Video Output Delay: OSD Fill to Video Output Delay: Clk to Data Out Delay: Output Enable to Video Output (High: Disable) Delay: Output Enable to Video Output (Low: Enable) Setup: Clock Enable to Clock Setup Time: Data In to Clock
Of: OSDFILL
Ok: OSDKEY
OUT
i
i
i
t
PdHOkVo
(WITH SUPERIMPOSED OSD)
t
PdLOkVo
t
PdLOfVo
VIDEO OUTPUT
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
14 ______________________________________________________________________________________
Typical Operating Characteristics—Dual Supplies ±5V
(VCC= +5V and VEE= -5V, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 15
Typical Operating Characteristics—Dual Supplies ±5V (continued)
(VCC= +5V and VEE= -5V, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
(A
V
= +1V/V)
MAX4358 toc11
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
9
-1
1
3
5
7
6
4
2
0
8
CL = 30pF
CL = 45pF
CL = 15pF
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
(A
V
= +2V/V)
MAX4358 toc12
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
7
-3
-1
1
3
5
4
2
0
-2
6
CL = 30pF
CL = 45pF
CL = 15pF
-40
-100
0.1 10 10011000
MAX4358 toc13
FREQUENCY (MHz)
CROSSTALK (dB)
-90
-80
-70
-60
-50
CROSSTALK vs. FREQUENCY
AV = +1V/V
-40
-90
0.1 1 10 100 1000
CROSSTALK vs. FREQUENCY
-80
MAX4358 toc14
FREQUENCY (MHz)
CROSSTALK (dB)
-70
-60
-50
-55
-65
-75
-85
-45
AV = +2V/V
0
-100
0.1 1 10 100 1000
DISTORTION vs. FREQUENCY
-80
MAX4358 toc15
FREQUENCY (MHz)
DISTORTION (dBc)
-60
-40
-20
-30
-50
-70
-90
-10
AV = +1V/V
2ND HARMONIC
3ND HARMONIC
0
-100
0.1 1 10 100 1000
DISTORTION vs. FREQUENCY
-80
MAX4358 toc16
FREQUENCY (MHz)
DISTORTION (dBc)
-60
-40
-20
-30
-50
-70
-90
-10
AV = +2V/V
2ND HARMONIC
3ND HARMONIC
0.1 101 100 1000
ENABLED-OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4358 toc17
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
1000
0.1
1
10
100
0.1 101 100 1000
DISABLED OUTPUT IMPEDANCE vs.
FREQUENCY
MAX4358 toc18
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
1M
1
10
10k
1k
100
100k
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
16 ______________________________________________________________________________________
Typical Operating Characteristics—Dual Supplies ±5V (continued)
(VCC= +5V and VEE= -5V, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
-40
-50
-60
-70
-80
-90
-100
-110
-120 100k 10M 100M1M 1G
MAX4358 toc19
FREQUENCY (Hz)
OFF ISOLATION (dB)
OFF ISOLATION vs. FREQUENCY
10k 1M100k 10M 100M
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX4358 toc20
FREQUENCY (Hz)
PSRR (dB)
-75
-70
-60
-65
-55
-50
1000
10
10 10k 100k 1M100 1k 10M
INPUT VOLTAGE NOISE vs. FREQUENCY
100
FREQUENCY (Hz)
VOLTAGE NOISE (nVHz)
MAX4358 toc21
LARGE-SIGNAL PULSE RESPONSE
(A
V
= +1V/V)
MAX4358 toc22
20ns/div
INPUT 1V/div
OUTPUT
1V/div
LARGE-SIGNAL PULSE RESPONSE
(A
V
= +2V/V)
MAX4358 toc23
20ns/div
INPUT
500mV/div
OUTPUT
1V/div
MEDIUM-SIGNAL PULSE RESPONSE
(A
V
= +1V/V)
MAX4358 toc24
20ns/div
INPUT
100mV/div
OUTPUT
100mV/div
MEDIUM-SIGNAL PULSE RESPONSE
(A
V
= +2V/V)
MAX4358 toc25
20ns/div
INPUT
50mV/div
OUTPUT
100mV/div
SWITCHING TIME
(A
V
= +1V/V)
MAX4358 toc26
20ns/div
V
UPDATE
5V/div
V
OUT
500mV/div
SWITCHING TIME
(A
V
= +2V/V)
MAX4358 toc27
20ns/div
V
UPDATE
5V/div
V
OUT
1V/div
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 17
Typical Operating Characteristics—Dual Supplies ±5V (continued)
(VCC= +5V and VEE= -5V, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
SWITCHING TRANSIENT (GLITCH)
(A
V
= +1V/V)
MAX4358 toc28
20ns/div
V
UPDATE
5V/div
V
OUT
25mV/div
SWITCHING TRANSIENT (GLITCH)
(A
V
= +2V/V)
MAX4358 toc29
20ns/div
V
UPDATE
5V/div
V
OUT
25mV/div
0
100
50
200
150
250
300
-14 -10 -8 -6-12 -4 -2 0 2 4 6
OFFSET VOLTAGE DISTRIBUTION
MAX4358 toc30
OFFSET VOLTAGE (mV)
-0.05
0102030405060708090100
0102030405060708090100
DIFFERENTIAL GAIN AND PHASE vs.
DC VOLTAGE (R
L
= 150Ω)
0.00
0.00
-0.02
0.05
0.02
0.04
0.10
0.06
0.08
0.15
IRE
DIFF PHASE (°)
DIFF GAIN (%)
MAX4358 toc31
0.01
0.00
-0.01
0102030405060708090100
0102030405060708090100
DIFFERENTIAL GAIN AND PHASE vs.
DC VOLTAGE (R
L
= 1kΩ)
0.02
-0.005
0.03
0.000
0.005
0.04
0.010
0.015
0.05
IRE
DIFF PHASE (°)
DIFF GAIN (%)
MAX4358 toc32
LARGE-SIGNAL PULSE RESPONSE WITH
CAPACITIVE LOAD (C
L
= 30pF, AV = +1V/V)
MAX4358 toc33
20ns/div
INPUT 1V/div
OUTPUT
1V/div
LARGE-SIGNAL PULSE RESPONSE WITH
CAPACITIVE LOAD (C
L
= 30pF, AV = +2V/V)
MAX4358 toc34
20ns/div
INPUT
500mV/div
OUTPUT
1V/div
MEDIUM-SIGNAL PULSE RESPONSE WITH
CAPACITIVE LOAD (C
L
= 30pF, AV = +1V/V)
MAX4358 toc35
20ns/div
INPUT
100mV/div
OUTPUT
100mV/div
MEDIUM-SIGNAL PULSE RESPONSE WITH
CAPACITIVE LOAD (C
L
= 30pF, AV = +2V/V)
MAX4358 toc36
20ns/div
INPUT
50mV/div
OUTPUT
100mV/div
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
18 ______________________________________________________________________________________
Typical Operating Characteristics—Dual Supplies ±5V (continued)
(VCC= +5V and VEE= -5V, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
-0.20
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-50 0-25 255075100
GAIN vs. TEMPERATURE
MAX4358 toc37
TEMPERATURE (°C)
NORMALIZED GAIN (dB)
AV = +2V/V
AV = +1V/V
1p 10n 1µ100p10p 1n 100n 10µ 100µ
MAX4358 toc38
10n
10µ
1µ
100n
100µ
1m
10m
100m
10
1
RESET DELAY vs. C
RESET
RESET DELAY (s)
C
RESET
(F)
OSD SWITCHING TRANSIENT
(100IRE LEVEL SWITCH) (A
V
= +2V/V)
MAX4358 toc39
50ns/div
V
OSDKEY0
5V/div
V
OUT0
500mV/div
100IRE
0IRE
OSD SWITCHING 3.58MHz SIGNAL
(A
V
= +2V/V)
MAX4358 toc40
50ns/div
V
OSDKEY0
5V/div
V
OUT0
500mV/div
0
20
10
40
30
60
50
70
-50 0 25-25 50 75 100
SUPPLY CURRENT vs. TEMPERATURE
MAX4358 toc41
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
I
CC
I
EE
I
DD
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 19
Typical Operating Characteristics—Dual Supplies ±3V
(VCC= +3V and VEE= -3V, VDD= +3V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
3
-7
0.1 1 10 100 1000
LARGE-SIGNAL FREQUENCY RESPONSE
-5
MAX4358 toc42
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
AV = +2V/V
RL = 150
AV = +1V/V
3
-7
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
-5
MAX4358 toc43
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
AV = +2V/V
RL = 150
AV = +1V/V
3
-7
0.1 1 10 100 1000
SMALL-SIGNAL FREQUENCY RESPONSE
-5
MAX4358 toc44
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
AV = +2V/V
RL = 150
AV = +1V/V
3
-7
0.1 1 10 100 1000
LARGE-SIGNAL FREQUENCY RESPONSE
-5
MAX4358 toc45
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
AV = +1V/V
RL = 1k
AV = +2V/V
3
-7
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
-5
MAX4358 toc46
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
AV = +1V/V
RL = 1k
AV = +2V/V
3
-7
0.1 1 10 100 1000
SMALL-SIGNAL FREQUENCY RESPONSE
-5
MAX4358 toc47
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
AV = +2V/V
RL = 1k
AV = +1V/V
0.9
-0.1
0.1 1 10 100 1000
LARGE-SIGNAL GAIN FLATNESS VS.
FREQUENCY
0.1
MAX4358 toc48
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
0.3
0.5
0.7
0.6
0.4
0.2
0
0.8
AV = +1V/V
AV = +2V/V
0.6
-0.4
0.1 1 10 100 1000
LARGE-SIGNAL GAIN FLATNESS VS.
FREQUENCY
-0.2
MAX4358 toc49
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
0.0
0.2
0.4
0.3
0.1
-0.1
-0.3
0.5
RL = 1k
AV = +2V/V
AV = +1V/V
3
-7
0.1 1 10 100 1000
LARGE-SIGNAL FREQUENCY RESPONSE
(A
V
= +1V/V)
-5
MAX4358 toc50
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
0
-2
-4
-6
2
CL = 15pF
CL = 30pF
CL = 45pF
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
20 ______________________________________________________________________________________
Typical Operating Characteristics—Dual Supplies ±3V (continued)
(VCC= +3V and VEE= -3V, VDD= +3V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
-30
-80 100k 1M 10M 100M 1G
CROSSTALK VS. FREQUENCY
-70
MAX4358 toc55
FREQUENCY (Hz)
CROSSTALK (dB)
-60
-50
-40
-45
-55
-65
-75
-35
AV = + 2V/V
-100
-80
-60
-40
-20
-30
-50
-70
-90
-10
100k 100M10M1M
DISTORTION VS. FREQUENCY
MAX4358 toc56
FREQUENCY (Hz)
DISTORTION (dB)
AV = + 1V/V
2ND HARMONIC
3RD HARMONIC
-100
-80
-60
-40
-20
-30
-50
-70
-90
-10
100k 100M10M1M
DISTORTION VS. FREQUENCY
MAX4358 toc57
FREQUENCY (Hz)
DISTORTION (dB)
AV = + 2V/V
2ND HARMONIC
3RD HARMONIC
0.1 101 100 1000
ENABLED OUTPUT IMPEDANCE
VS. FREQUENCY
MAX4358 toc58
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
1000
0.1
1
10
100
1M
1
0.1 10 1001 1000
DISABLED OUTPUT IMPEDANCE
VS. FREQUENCY
MAX4358 toc59
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
10
100
1k
10k
100k
3
-7
0.1 1 10 100 1000
LARGE-SIGNAL FREQUENCY RESPONSE
(A
V
= +2V/V)
-5
MAX4358 toc51
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
-3
-1
1
-0
-2
-4
-6
2
CL = 30pF
CL = 15pF
CL = 45pF
9
1
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
1
MAX4358 toc52
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
3
5
7
6
4
2
0
8
(AV = +1V/V)
CL = 15pF
CL = 30pF
CL = 45pF
7
-3
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
-1
MAX4358 toc53
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
1
3
5
4
2
0
-2
6
(AV = +2V/V)
CL = 30pF
CL = 15pF
CL = 45pF
-40
-90 100k 1M 10M 100M 1G
CROSSTALK VS. FREQUENCY
-80
MAX4358 toc54
FREQUENCY (Hz)
CROSSTALK (dB)
-70
-60
-50
-55
-65
-75
-85
-45
AV = + 1V/V
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 21
Typical Operating Characteristics—Dual Supplies ±3V (continued)
(VCC= +3V and VEE= -3V, VDD= +3V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
-40
-50
-60
-70
-80
-90
-100
-110
-120 100k 10M 100M1M 1G
OFF ISOLATION VS. FREQUENCY
MAX4358 toc60
FREQUENCY (Hz)
OFF ISOLATION (dB)
10k 1M100k 10M 100M
POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
MAX4358 toc61
FREQUENCY (Hz)
PSRR (dB)
-50
-75
-70
-60
-65
-55
1000
10
10 10k 100k 1M100 1k 10M
INPUT VOLTAGE NOISE vs. FREQUENCY
100
MAX4358 toc62
FREQUENCY(Hz)
VOLTAGE NOISE (nV/Hz)
LARGE-SIGNAL PULSE RESPONSE
(A
V
= +1V/V)
MAX4358 toc63
INPUT 1V/div
OUTPUT
1V/div
20ns/div
LARGE-SIGNAL PULSE RESPONSE
(A
V
= +2V/V)
MAX4358 toc64
INPUT
500mV/div
OUTPUT
1V/div
20ns/div
MEDIUM-SIGNAL PULSE RESPONSE
(A
V
= +1V/V)
MAX4358 toc65
INPUT
100mV/div
OUTPUT
100mV/div
20ns/div
MEDIUM-SIGNAL PULSE RESPONSE
(A
V
= +2V/V)
MAX4358 toc66
INPUT
50mV/div
OUTPUT
100mV/div
20ns/div
SWITCHING TIME
(A
V
= +1V/V)
MAX4358 toc67
V
OUT
500mV/div
20ns/div
V
UPDATE
3V/div
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
22 ______________________________________________________________________________________
Typical Operating Characteristics—Dual Supplies ±3V (continued)
(VCC= +3V and VEE= -3V, VDD= +3V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
0.05
-0.05
0.15
10 30 40 5020 60 70 80 90 100
DIFFERENTIAL GAIN AND PHASE
(R
L
= 1kΩ)
MAX4358 toc73
IRE
DIFFERENTIAL
GAIN (%)
DIFFERENTIAL
PHASE (°)
0.05
-0.05
0.15
0.25
20ns/div
LARGE-SIGNAL PULSE RESPONSE
WITH CAPACITIVE LOAD
(C
L
= 30pF, AV = +1V/V)
INPUT 1V/div
OUTPUT
1V/div
MAX4358 toc74
20ns/div
LARGE-SIGNAL PULSE RESPONSE
WITH CAPACITIVE LOAD
(C
L
= 30pF, AV = +2V/V)
INPUT
500mV/div
OUTPUT
1V/div
MAX4358 toc75
20ns/div
MEDIUM-SIGNAL PULSE RESPONSE
WITH CAPACITIVE LOAD
(C
L
= 30pF, AV = +1V/V)
INPUT
100mV/div
OUTPUT
100mV/div
MAX4358 toc76
20ns/div
MEDIUM-SIGNAL PULSE RESPONSE
WITH CAPACITIVE LOAD (C
L
= 30pF, AV = +2V/V)
INPUT
50mV/div
OUTPUT
100mV/div
MAX4358 toc77
50
0
150
100
250
200
300
-15 -11 -9 -7-13 -5 -3 -1 1 3 5
OFFSET VOLTAGE DISTRIBUTION
MAX4358 toc71
OFFSET VOLTAGE (mV)
20ns/div
SWITCHING TRANSIENT GLITCH
(A
V
= +1V/V)
V
UPDATE
3V/div
V
OUT
25mV/div
MAX4358 toc69
20ns/div
SWITCHING TRANSIENT GLITCH
(A
V
= +2V/V)
V
UPDATE
3V/div
V
OUT
25mV/div
MAX4358 toc70
0.05
-0.05
0.15
0.25
10 30 40 5020 60 70 80 90 100
DIFFERENTIAL GAIN AND PHASE
(R
L
= 150Ω)
MAX4358 toc72
IRE
DIFFERENTIAL
GAIN (%)
DIFFERENTIAL
PHASE (°)
0.05
-0.05
0.15
0.25
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 23
Typical Operating Characteristics—Dual Supplies ±3V (continued)
(VCC= +3V and VEE= -3V, VDD= +3V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless
otherwise noted.)
50ns/div
OSD SWITCHING 3.58MHz SIGNAL
V
OSDKEY0
3V/div
V
OUT0
500mV/div
MAX4358 toc81
AV = +2V/V
-50 0-25 255075100
GAIN VS. TEMPERATURE
MAX4356 toc78
TEMPERATURE (°C)
NORMALIZED GAIN (dB)
-0.20
-0.15
-0.05
-0.10
0.10
0.15
0.05
0.20
0
AV = +2V/V
AV = +1V/V
1p 10n 1µ100p10p 1n 100n 10µ 100µ
MAX4356 toc79
10n
10µ
1µ
100n
100µ
1m
10m
100m
10
1
RESET DELAY vs. C
RESET
RESET DELAY (s)
C
RESET
(F)
50ns/div
OSD SWITCHING TRANSIENT
(100IRE LEVEL SWITCH)
V
OSDKEY0
3V/div
V
OUT0
500mV/div
MAX4358 toc80
100IRE
0IRE
AV = +2V/V
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
24 ______________________________________________________________________________________
Typical Operating Characteristics—Single Supply +5V
(VCC= +5V and VEE= 0, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
LARGE-SIGNAL FREQUENCY
RESPONSE
3
RL = 150
2
1
0
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
0.1 1 10 100 1000 FREQUENCY (MHz)
3
2
MAX4358 toc82
1
0
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
MEDIUM-SIGNAL FREQUENCY
RL = 150
0.1 1 10 100 1000
SMALL-SIGNAL FREQUENCY
RESPONSE
FREQUENCY (MHz)
MAX4358 toc83
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
3
RL = 150
2
1
0
0.1 1 10 100 1000
RESPONSE
FREQUENCY (MHz)
MAX4358 toc84
LARGE-SIGNAL FREQUENCY
RESPONSE
3
RL = 1k
2
1
0
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
0.1 1 10 100 1000
FREQUENCY (MHz)
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
NORMALIZED GAIN (dB)
0.1
0.0
-0.1
0.1 1 10 100 1000 FREQUENCY (MHz)
3
2
MAX4358 toc85
1
0
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
0.6
0.5
MAX4358 toc88
0.4
0.3
0.2
0.1
0
-0.1
NORMALIZED GAIN (dB)
-0.2
-0.3
-0.4
MEDIUM-SIGNAL FREQUENCY
RESPONSE
RL = 1k
0.1 1 10 100 1000 FREQUENCY (MHz)
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY
RL = 1k
0.1 1 10 100 1000 FREQUENCY (MHz)
3
2
MAX4358 toc86
1
0
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
3
2
MAX4358 toc89
1
0
-1
-2
-3
-4
NORMALIZED GAIN (dB)
-5
-6
-7
SMALL-SIGNAL FREQUENCY
RESPONSE
RL = 1k
0.1 1 10 100 1000 FREQUENCY (MHz)
LARGE-SIGNAL FREQUENCY RESPONSE
= +1V/V)
(A
V
CL = 30pF
CL = 15pF
0.1 1 10 100 1000 FREQUENCY (MHz)
CL = 45pF
MAX4358 toc87
MAX4358 toc90
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 25
Typical Operating Characteristics—Single Supply +5V (continued)
(VCC= +5V and VEE= 0, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
9
-1
0.1 1 10 100 1000
MEDIUM-SIGNAL FREQUENCY RESPONSE
(A
V
= +1V/V)
1
MAX4358 toc91
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
3
5
7
6
4
2
0
8
CL = 30pF
CL = 15pF
CL = 45pF
-50
-100 100k 1M 10M 100M 1G
CROSSTALK vs. FREQUENCY
-90
MAX4358 toc92
FREQUENCY (Hz)
CROSSTALK (dB)
-80
-70
-60
-65
-75
-85
-95
-55
-10
-100 100k 100M10M1M
DISTORTION vs. FREQUENCY
-70
-90
-30
-50
0
-60
-80
-20
-40
MAX4358 toc93
FREQUENCY (Hz)
DISTORTION (dBc)
2nd HARMONIC
3rd HARMONIC
0.1 101 100 1000
ENABLED OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4358 toc94
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
1000
0.1
1
10
100
1M
1
0.1 10 1001 1000
DISABLED OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4358 toc95
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
10
100
1k
10k
100k
-40
-50
-60
-70
-80
-90
-100
-110
-120 100k 10M 100M1M 1G
OFF ISOLATION vs. FREQUENCY
MAX4358 toc96
FREQUENCY (Hz)
OFF ISOLATION (dB)
1000
10
10 10k 100k 1M100 1k 10M
INPUT VOLTAGE NOISE
vs. FREQUENCY
100
MAX4358 toc98
FREQUENCY (Hz)
VOLTAGE NOISE (NV/Hz)
20ns/div
LARGE-SIGNAL PULSE RESPONSE
INPUT 1V/div
OUTPUT
1V/div
MAX4358 toc99
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
26 ______________________________________________________________________________________
Typical Operating Characteristics—Single Supply +5V (continued)
(VCC= +5V and VEE= 0, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
20ns/div
MEDIUM-SIGNAL PULSE RESPONSE
INPUT
100mV/div
OUTPUT
100mV/div
MAX4358 toc100
20ns/div
SWITCHING TIME
V
UPDATE
5V/div
V
OUT
500mV/div
MAX4358 toc101
20ns/div
SWITCHING TRANSIENT (GLITCH)
V
UPDATE
5V/div
V
OUT
25mV/div
MAX4358 toc102
0
50
150
100
200
250
-20
-16
-18
-14-8-10-12 -6 -4
-2
0
OFFSET VOLTAGE HISTOGRAM
MAX4358 toc103
OFFSET VOLTAGE (mV)
IRE
DIFFERENTIAL GAIN AND PHASE
(R
L
= 150)
DIFFERENTIAL
GAIN (%)
DIFFERENTIAL
PHASE (%)
MAX4358 toc104
0.25
0.20
0.15
0.10
0.05 0
-0.05
0.30
0.25
0.20
0.15
0.10 0
-0.05
-0.10 10
20
30 40 50 60
70
80 90
100
IRE
DIFFERENTIAL GAIN AND PHASE
(R
L
= 1k)
DIFFERENTIAL
GAIN (%)
DIFFERENTIAL
PHASE (%)
MAX4358 toc105
0.04
0.03
0.02
0.01 0
-0.01
0.10
0.08
0.06
0.04
0.02 0
-0.02
10
20
30 40 50 60
70
80 90
100
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 27
Typical Operating Characteristics—Single Supply +5V (continued)
(VCC= +5V and VEE= 0, VDD= +5V, AGND = DGND = 0, V
IN_
= 0, RL= 150to AGND, AV= +1V/V, and TA = +25°C, unless oth-
erwise noted.)
1p 10n 1
µ
100p10p 1n 100n 10µ100
µ
RESET DELAY
vs. C
RESET
MAX4358 toc109
C
RESET
(F)
RESET DELAY (s)
10n
100m
1
10
100
10m
1m
100
µ
10
µ
1
µ
100n
50ns/div
OSD SWITCHING 3.58MHz SIGNAL
V
OSDKEY0
5V/div
V
OUT0
250mV/div
MAX4358 toc111
-0.20
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-50 0-25 25 50 75 100
GAIN vs. TEMPERATURE
MAX4358 toc108
TEMPERATURE (°C)
NORMALIZED GAIN (dB)
50ns/div
OSD SWITCHING TRANSIENT
(100IRE LEVEL SWITCH)
V
OSDKEY0
5V/div
V
OUT0
250mV/div
MAX4358 toc110
100IRE
0IRE
20ns/div
MEDIUM-SIGNAL PULSE RESPONSE WITH
CAPACITIVE LOAD (C
L
= 30pF)
INPUT
100mV/div
OUTPUT
100mV/div
MAX4358 toc107
20ns/div
LARGE-SIGNAL PULSE RESPONSE WITH
CAPACITIVE LOAD (C
L
= 30pF)
INPUT
1V/div
INPUT
1V/div
MAX4358 toc106
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
28 ______________________________________________________________________________________
Pin Description
PIN NAME FUNCTION
1, 3, 5, 7, 9, 11, 13, 15, 17, 19,
21, 23, 25, 27, 29, 31, 33, 35, 37,
39, 41, 43, 45, 127, 129, 131,
133, 135, 137, 139, 141, 143
2, 4, 6, 8, 10, 12, 14, 16, 18, 20,
22, 24, 26, 28, 30, 32, 34, 72, 73,
107, 108, 109, 126, 128, 130,
132, 134, 136, 138, 140, 142
IN0–IN31 Buffered Analog Inputs
AGND Analog Ground
36, 74, 78, 82, 86, 90, 94, 98,
102, 106
38, 40, 42, 44 A3–A0
46 DGND Digital Ground
47 AOUT
48 MODE
49 DIN Serial Data Input. Data is clocked-in on the falling edge of SCLK.
50 SCLK Serial Clock Input
51 UPDATE
52 RESET
53 CE Clock Enable Input. Drive low to enable the serial data interface.
54 DOUT
55–70
71 V
75, 77, 79, 81, 83, 85, 87, 89, 91,
93, 95, 97, 99, 101, 103, 105
V
CC
OSDKEY0–
OSDKEY15
DD
OUT0– OUT15
Positive Analog Supply. Bypass each pin with a 0.1µF capacitor to AGND. Connect a single 10µF capacitor from one V
Address Programming Inputs. Connect to DGND or V for individual output address mode. See Table 4.
Address Recognition Output. AOUT drives low after successful chip address recognition.
Serial Interface Mode Select Input. Drive high for Complete Matrix Mode (Mode 1), or drive low for Individual Output Address Mode (Mode 0).
Update Input. Drive UPDATE low to transfer data from Mode Registers to the switch matrix.
Asynchronous Reset Input/Output. Drive RESET low to initiate hardware reset. All analog outputs are disabled. Additional power-on reset delay may be set by connecting a small capacitor from RESET to DGND.
Serial Data Output. In Complete Matrix Mode, data is clocked through the 112­bit Matrix Control shift register. In Individual Output Address Mode, data at DIN passes directly to DOUT.
Digital Control Input. Control for the fast 2:1 OSD Insertion multiplexer routing signal to output buffers. A logic high routes programmed IN_ analog input signal to output buffer. A logic low routes the dedicated OSDFILL_ input to corresponding output buffer.
Digital Logic Supply. Bypass VDD with a 0.1µF capacitor to DGND.
Buffered Analog Outputs. Gain is individually programmable for A
= +2V/V via the serial interface. Outputs may be individually disabled (high
A
V
impedance). On power-up, or assertion of RESET, all outputs are disabled.
pin to AGND.
CC
to select the address
DD
= +1V/V or
V
76, 80, 84, 88, 92, 96, 100, 104,
144
110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
122, 123, 124, 125
V
EE
OSDFILL15 –OSDFILL0
Negative Analog Supply. Bypass each pin with a 0.1µF capacitor to AGND. Connect a single 10µF capacitor from one V
Dedicated OSD Analog Signal Buffered Inputs. For each output buffer amplifier. OSDFILL the corresponding OSDKEY
input signal is routed to output buffer amplifier OUTi when
i
is low.
i
pin to AGND.
EE
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 29
Detailed Description
The MAX4358 is a highly integrated 32 16 nonblock­ing video crosspoint switch matrix . All inputs and out­puts are buffered, with all outputs able to drive standard 75reverse-terminated video loads.
A three-wire interface programs the switch matrix and initializes with a single update signal. The unique serial interface operates in one of two modes, Complete Matrix Mode (Mode 1) or Individual Output Address Mode (Mode 0).
The signal path of the MAX4358 is from the buffered inputs (IN0–IN31), through the switching matrix, buffered by the output amplifiers, and presented at the outputs (OUT0–OUT15) (Functional Diagram). The other functional blocks are the serial interface and con­trol logic. Each of the functional blocks is described in detail below.
Analog Outputs
The MAX4358 outputs are high-speed amplifiers capa­ble of driving 150Ω (75Ω back-terminated) loads. The gain, AV= +1V/V or +2V/V, is selectable via program­ming bit 5 of the serial control word. Amplifier compen­sation is automatically optimized to maximize the bandwidth for each gain selection. Each output can be individually enabled and disabled via bit 6 of the serial control word. When disabled, the output is high imped­ance presenting typically 4kload, and 3pF output capacitance, allowing multiple outputs to be connected together for building large arrays. On power-up (or asynchronous RESET) all outputs are initialized in the disabled state to avoid output conflicts in large array configurations. The programming and operation of the MAX4358 is output referred. Outputs are configured individually to connect to any one of the 32 analog inputs, programmed to the desired gain (AV= +1V/V or +2V/V), and enabled or disabled in a high-impedance state.
Functional Diagram
RESET
UPDATE
IN0
IN1
IN2
IN31
DIN
SCLK
OSDFILL1
OSDFILL0 OSDFILL15
MAX4358
AV*
32 x 16
SWITCH MATRIX
POWER-ON
RESET
SERIAL
CE
INTERFACE
THERMAL
SHUTDOWN
DISABLE ALL OUTPUTS
DECODE LOGIC
MATRIX REGISTER
UPDATE REGISTER
512
LATCHES
112 BITS
16 BITS
16
2:1
OSD
MUX
AV*
AV*
AV*
16
ENABLE/DISABLE
OUT0
OUT1
OUT2
OUT15
V
CC
V
EE
AGND
V
DD
DGND
DOUT
AOUT
A0-A3 MODE
*A
= +1V/V OR +2V/V
V
OSDKEY0 OSDKEY15
OSDKEY1
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
30 ______________________________________________________________________________________
Table 1. Operation Truth Table
Analog Inputs
The MAX4358 offers 32 analog input channels. Each input is buffered before the crosspoint matrix switch, allowing one input to cross-connect up to 16 outputs. The input buffers are voltage feedback amplifiers with high-input impedance and low input bias current. This allows the use of very simple input clamp circuits.
OSDFILL and OSDKEY Inputs
Intended for on-screen display insertion, the 16 OSD­FILL inputs are buffered analog signal inputs that are routed to a dedicated output buffer through a fast 2:1 MUX. The signal presented to the output buffer is selected from the programmed analog input signal (IN_) and the dedicated OSDFILL input signal.
Switch Matrix
The MAX4358 has 512 individual T-switches making a 32 16 switch matrix. The switching matrix is 100% nonblocking, which means that any input may be rout­ed to any output. The switch matrix programming is output-referred. Each output may be connected to any one of the 32 analog inputs. Any one input can be rout­ed to all 16 outputs with no signal degradation.
Digital Interface
The digital interface consists of the following pins: DIN, DOUT, SCLK, AOUT, UPDATE, CE, A3–A0, MODE, and RESET. DIN is the serial-data input, DOUT is the serial­data output.
Note: "X" = Don’t Care
CE UPDATE
1 X X X X X X 1 No change in logic
01
00 X X X 1 1 1
01
SCLK DIN DOUT MODE
D
i
D
i
D
i-112
D
i
11 1
01 1
AOUT RESET
OPERATION/COMMENTS
Data at DIN is clocked on negative edge of SCLK into 112­bit Complete Matrix Mode register. DOUT supplies original data in 112 SCLK pulses later.
Data in serial 112-bit Complete Matrix Mode register is transferred into parallel latches which control the switching matrix.
Data at DIN is routed to Individual Output Address Mode shift register. DIN is also connected directly to DOUT so that all devices on the serial bus may be addressed in parallel.
00 X
XX XX XXX 0
D
i
D
i
00 1
4-bit chip address A3–A0 is compared to D14–D11. If equal, remaining 11 bits in Individual Output Address Mode Register are decoded, allowing reprogramming for a single output. AOUT signals successful individual matrix update.
Asynchronous reset. All outputs are disabled. Other logic remains unchanged.
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 31
SCLK is the serial-data clock which clocks data into the data input registers (Figure 3). Data at DIN is loaded in at each falling edge of SCLK. DOUT is the data shifted out of the 112-bit Complete Matrix Mode register (Mode = 1). DIN passes directly to DOUT when in Individual Output Address Mode (Mode = 0).
The falling edge of UPDATE latches the data and pro­grams the matrix. When using Individual Output Address Mode, the address recognition output AOUT drives low when control-word bits D14 to D11 match the address programming inputs (A3–A0) and UPDATE is low (Table 1). Table 1 is the operation truth table.
Programming the Matrix
The MAX4358 offers two programming modes: Individual Output Address Mode and Complete Matrix
Mode. These two distinct programming modes are selected by toggling a single MODE pin high or low. Both modes operate with the same physical board lay­out. This flexibility allows initial programming of the IC by daisy-chaining and sending one long data word while still being able to immediately address and update individual outputs in the matrix.
Individual Output Address Mode (MODE = 0)
Drive MODE to logic low to select Mode 0. Individual outputs are programmed via the serial interface with a single 16-bit control word. The control word consists of a don’t care MSB, the chip address bits, output address bits, an output enable/disable bit, an output gain-set bit, and input address bits (Table 2 through Table 6, and Figure 2).
Figure 2. Serial Interface Block Diagram
4
SCLK
MODE
CE
A0–A3
CHIP ADDRESS
4
SCLK
CE
MODE
DIN
16-BIT INDIVIDUAL OUTPUT
ADDRESS MODE REGISTER
11
112-BIT COMPLETE MATRIX MODE REGISTER
11
OUTPUT ADDRESS DECODE
UPDATE
EN
SWITCH MATRIX
112-BIT PARALLEL LATCH
512 16
7
SWITCH DECODE
7
112
MODE
1
OUTPUT ENABLE
112
AOUT
112
MODE
A
DATA
ROUTING
GATE
B
MODE
S
DOUT
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
32 ______________________________________________________________________________________
In Mode 0, data at DIN passes directly to DOUT through the data routing gate (Figure 3). In this configu­ration, the 16-bit control word is simultaneously sent to all chips in an array of up to 16 addresses.
Complete Matrix Mode (MODE = 1)
Drive MODE to logic high to select Mode 1. A single 112-bit control word, consisting of sixteen 7-bit control words, programs all outputs. The 112-bit control word’s first 7-bit control word (MSBs) programs output 15, and the last 7-bit control word (LSBs) programs output 0 (Table 7 and Figures 4 and 5). Data clocked into the 112-bit complete matrix mode register is latched on the falling edge of UPDATE, and the outputs are immedi­ately updated.
Initialization String
Complete Matrix Mode (Mode = 1) is convenient for programming the matrix at power-up. In a large matrix consisting of many MAX4358s, all the devices can be programmed by sending a single bit stream equal to n x 112 bits where n is the number of MAX4358 devices on the bus. The first 112-bit data word programs the last in-line MAX4358 (see Matrix Programming under the Applications Information section).
On-Screen-Display (OSD) Fast MUX
The MAX4358 features an asynchronous dedicated 2:1 Mux for each output buffer amplifier. Fast 40ns switch­ing times enable pixel switching for on-screen-display (OSD) information such as text or other picture-in-pic­ture signals (Figure 1). OSDFILL_ inputs are buffered analog inputs connected to each dedicated OSD Mux. Drive the dedicated OSDKEY_ digital input to switch between the programmed IN_ input from the crosspoint switch matrix and the OSDFILL_. A logic low on OSDKEYi routes the analog signal at OSDFILLi to the OUTi output buffer. OSDKEY_ control does not affect the crosspoint switch matrix programming or the out­put-buffer enable/disable or gain-set programming.
RESET
The MAX4358 features an asynchronous bidirectional RESET with an internal 20kpullup resistor to VDD. When RESET is pulled low either by internal circuitry, or driven externally, the analog output buffers are latched into a high-impedance state. After RESET is released, the output buffers remain disabled. The outputs may be enabled by sending a new 112-bit data word or a 16-bit individual output address word. A reset is initiated from any of three sources. RESET can be driven low by external circuitry to initiate a reset, or RESET can be pulled low by internal circuitry during power-up (power­on-reset) or thermal shutdown.
Table 2. 16-Bit Serial Control Word Bit Assignments (Mode 0: Individual Output Address Mode)
BIT NAME FUNCTION
15 (MSB) X Don’t Care
14 IC Address A3 MSB of selected chip address
13 IC Address A2
12 IC Address A1
11 IC Address A0 LSB of selected chip address
10 Output Address B3 MSB of output buffer address
9 Output Address B2
8 Output Address B1
7 Output Address B0 LSB of output buffer address
6 Output Enable Enable bit for output, 0 = disable, 1 = enable.
5 Gain Set Gain Select for output buffer, 0 = gain of +1V/V, 1 = gain of +2V/V.
4 Input Address 4 MSB of input channel select address
3 Input Address 3
2 Input Address 2
1 Input Address 1
0 (LSB) Input Address 0 LSB of input channel select address
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 33
Since driving RESET low only clears the output-buffer­enable bit in the matrix control latches, RESET can be used to disable all outputs simultaneously. If no new data has been loaded into the 112-bit complete matrix mode register, a single UPDATE restores the previous matrix control settings.
Power-On-Reset
The power-on-reset ensures all output buffers are in a disabled state when power is initially applied. A V
DD
voltage comparator generates the power-on-reset. When the voltage at V
DD
is less than 2.5V, the power-
on-reset comparator pulls RESET low via internal cir­cuitry. As the digital-supply voltage ramps up crossing
2.5V, the MAX4358 holds RESET low for 40ns (typ). Connecting a small capacitor from RESET to DGND extends the power-on-reset delay. (see the Power-On-
Reset vs. RESET Capacitance graph in Typical Operating Characteristics).
Thermal Shutdown
The MAX4358 features thermal shutdown protection with temperature hysteresis. When the die temperature exceeds 150°C, the MAX4358 pulls RESET low, dis­abling the output buffer. When the die cools by 20°C, the RESET pulldown is deasserted, and output buffers remain disabled until the device is programmed again.
Applications Information
Building Large Video-Switching Systems
The MAX4358 can be easily used to create larger switching matrices. The number of ICs required to implement the matrix is a function of the number of input channels, the number of outputs required, and whether the array needs to be nonblocking or not.
Figure 3. Mode 0, Individual Output Address Mode Timing and Programming Example
16-BIT INDIVIDUAL OUTPUT ADDRESS MODE:
FIRST BIT IS A DON'T CARE BIT, LAST 15 BITS CLOCKED INTO DIN WHEN MODE = 0, CREATES ADDRESS WORD; IC ADDRESS A3–A0 IS COMPARED TO DIN14–DIN11 WHEN UPDATE IS LOW; IF EQUAL, ADDRESSED OUTPUT IS UPDATED
UPDATE
t
MODE
SCLK
SuMd
DIN
t
HdMd
DON'T CARE X
IC ADDRESS A3
IC ADDRESS A2
IC ADDRESS = 2 OUTPUT ADDRESS = 9
IC ADDRESS A0
IC ADDRESS A1
OUTPUT ADDRESS B1
OUTPUT ADDRESS B2
OUTPUT ADDRESS B3
EXAMPLE OF 16-BIT SERIAL CONTROL WORD FOR OUTPUT CONTROL IN INDIVIDUAL OUTPUT ADDRESS MODE
OUTPUT ENABLE
OUTPUT ADDRESS B0
GAIN SET = +1V/V
INPUT ADDRESS 1 = 0
INPUT ADDRESS 2 = 0
INPUT ADDRESS 3 = 0
INPUT ADDRESS 4 (MSB) = 1
OUTPUT (i) ENABLED, A
CONNECTED TO INPUT 16
= +1V/V,
V
INPUT ADDRESS 0 (LSB) = 0
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
34 ______________________________________________________________________________________
Figure 5. Mode 1: Complete Matrix Mode Programming
Figure 4. 7-Bit Control Word and Programming Example (Mode 1: Complete Matrix Mode)
SCLK
t
SuDi
DIN
UPDATE
DOUT
EXAMPLE OF 7-BIT SERIAL CONTROL WORD FOR OUTPUT CONTROL
OUTPUT (i) ENABLED, AV = +1V/V, CONNECTED TO INPUT 28
t
HdDi
t
PdDo
t
MnLCk
SCLK
DIN
t
MnHCk
+1V/V
t
SuHUd
t
MnLUd
NEXT CONTROL WORD
ENABLE OUTPUT
GAIN SET =
INPUT ADDRESS 3 = 1
INPUT ADDRESS 4 (MSB) = 1
INPUT ADDRESS 2 = 1
INPUT ADDRESS 1 = 0
INPUT ADDRESS 0 (LSB) = 0
1
UPDATE
1
MODE
DIN
MOST SIGNIFICANT BITS OF THE 7-BIT CONTROL WORD ARE SHIFTED IN FIRST; I.E. OUT15, THEN OUT14, ETC. LAST 7 BITS SHIFTED IN PRIOR TO UPDATE FALLING EDGE PROGRAM OUT0.
7-BIT CONTROL WORD
OUT2 OUT1 OUT0
0
0
TIME
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 35
Table 3. Chip Address Programming for 16-Bit Control Word (Mode 0: Individual Output Address Mode)
Table 4. Chip Address A3–A0 Pin Programming
IC ADDRESS BIT ADDRESS
A3 (MSB) A2 A1 A0 (LSB) Chip Address (Hex) Chip Address (Decimal)
0 0 0 0 0h 0
0 0 0 1 1h 1
0 0 1 0 2h 2
0 0 1 1 3h 3
0 1 0 0 4h 4
0 1 0 1 5h 5
0 1 1 0 6h 6
0 1 1 1 7h 7
1 0 0 0 8h 8
1 0 0 1 9h 9
1 0 1 0 Ah 10
1 0 1 1 Bh 11
1 1 0 0 Ch 12
1 1 0 1 Dh 13
1 1 1 0 Eh 14
1 1 1 1 Fh 15
PIN ADDRESS
A3 A2 A1 A0 Chip Address (Hex)
DGND DGND DGND DGND 0h 0
DGND DGND DGND V
DGND DGND V
DGND DGND V
DGND V
DGND V
DGND V
DGND V
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
DGND DGND DGND 8h 8
DGND DGND V
DGND V
DGND V
DD
DD
DD
DD
V
DD
V
DD
V
DD
V
DD
DGND DGND 4h 4
DGND V
DGND DGND Ch 12
DGND V
DD
DD
V
DD
V
DD
DD
DD
V
DD
V
DD
DGND 2h 2
DGND 6h 6
DGND Ah 10
DGND Eh 14
DD
V
DD
DD
V
DD
DD
V
DD
DD
V
DD
1h 1
3h 3
5h 5
7h 7
9h 9
Bh 11
Dh 13
Fh 15
Chip Address
(Decimal)
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
36 ______________________________________________________________________________________
The most straightforward technique for implementing nonblocking matrices is to arrange the building blocks in a grid. The inputs connect to each vertical bank of devices in parallel with the other banks. The outputs of each building block in a vertical column connect together in a wired-OR configuration. Figure 6.shows a 128-input, 32-output, nonblocking array using eight MAX4358 crosspoint devices.
The wire-OR connection of the outputs shown in the diagram is possible because the outputs of the IC devices can be placed in a disabled, or high-imped­ance-output state. This disable state of the output buffers is designed for a maximum impedance vs. fre­quency while maintaining a low output capacitance. These characteristics minimize the adverse loading effects from the disabled outputs. Larger arrays are constructed by extending this connection technique to more devices.
Driving a Capacitive Load
Figure 6 shows an implementation requiring many out­puts to be wired together. This creates a situation where each output buffer sees not only the normal load impedance, but also the disabled impedance of all the other outputs. This impedance has a resistive and a capacitive component. The resistive components reduce the total effective load for the driving output.
Table 5. Output Selection Programming
Figure 6. 128 x 32 Nonblocking Matrix Using 32 x 16 Crosspoint Devices
B3 (MSB) B2 B1 B0 (LSB)
0 000 0
0 001 1
0 010 2
0 011 3
0 100 4
0 101 5
0 110 6
0 111 7
1 000 8
1 001 9
1 010 10
1 011 11
1 100 12
1 101 13
1 110 14
1 111 15
OUTPUT ADDRESS BIT
SELECTED OUTPUT
INPUTS
(0–31)
INPUTS
(32–63)
INPUTS
(64–95)
INPUTS
(96–127)
32 IN
32 IN
32 IN
32 IN
MAX4358
MAX4358
MAX4358
MAX4358
16
OUT
16
OUT
16
OUT
16
OUT
OUTPUTS (0–15)
32 IN
32 IN
32 IN
32 IN
MAX4358
MAX4358
MAX4358
MAX4358
OUT
OUT
OUT
OUT
OUTPUTS (16–31)
16
16
16
16
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 37
Total capacitance is the sum of the capacitance of all the disabled outputs and is a function of the size of the matrix. Also, as the size of the matrix increases, the length of the PC board traces increases, adding more capacitance. The output buffers have been designed to drive more than 30pF of capacitance while still main­taining a good AC response. Depending on the size of the array, the capacitance seen by the output can exceed this amount. There are several ways to improve the situation. The first is to use more building-block crosspoint devices to reduce the number of outputs that need to be wired together (see Figure 7).
In Figure 7, the additional devices are placed in a sec­ond bank to multiplex the signals. This reduces the number of wired-OR connections. Another solution is to put a small resistor in series with the output before the capacitive load to limit excessive ringing and oscilla­tions. Figure 8 shows the graph of the Optimal Isolation
Table 6. Input Selection Programming
Figure 7. 128 x 16 Nonblocking Matrix with Reduced Capacitive Loading
Figure 8. Optimal Isolation Resistor vs. Capacitive Load
INPUTS (0–31)
INPUTS (32–63))
INPUTS (64–95)
INPUTS (96–127)
32 IN
32 IN
32 IN
32 IN
MAX4358
MAX4358
MAX4358
MAX4358
OUT
OUT
OUT
OUT
16
16
16 IN
MAX4358
16
16
16
IN
OUT
16
OUTPUTS (0–15)
OPTIMAL ISOLATION RESISTANCE
vs. CAPACITIVE LOAD
30
25
20
15
10
ISOLATION RESISTANCE (Ω)
5
0
0 500
200100 300 400
CAPACITIVE LOAD (pF)
B4
(MSB)
00000 0
00001 1
00010 2
00011 3
00100 4
00101 5
00110 6
00111 7
01000 8
01001 9
01010 10
01011 11
01100 12
01101 13
01110 14
01111 15
10000 16
10001 17
10010 18
10011 19
10100 20
10101 21
10110 22
10111 23
11000 24
11001 25
11010 26
11011 27
11100 28
11101 29
11110 30
11111 31
INPUT ADDRESS BIT
B3 B2 B1
B0
(LSB)
SELECTED
INPUT
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
38 ______________________________________________________________________________________
Resistor vs. Capacitive Load. A lowpass filter is created from the series resistor and parasitic capacitance to ground. A single R-C do not affect the performance at video frequencies, but in a very large system there may be many R-Cs cascaded in series. The cumulative effect is a slight rolling off of the high frequencies caus­ing a "softening" of the picture. There are two solutions to achieve higher performance. One way is to design the PC board traces associated with the outputs such that they exhibit some inductance. By routing the traces in a repeating "S" configuration, the traces that are nearest each other will exhibit a mutual inductance increasing the total inductance. This series inductance causes the amplitude response to increase or peak at
higher frequencies, offsetting the rolloff from the para­sitic capacitance. Another solution is to add a small­value inductor to the output.
On-Screen Display Insertion
The MAX4358 facilitates the insertion of on-screen graphics and characters by using the built-in fast 2:1 multiplexer associated with each of the 16 outputs (Functional Diagram). This mux switches in 40ns, much less than the width of a single pixel. Access to this fast mux is through 16 dedicated OSDFILL analog inputs and 16 dedicated OSDKEY input controls. OSD timing is externally controlled and applied to the OSDKEY inputs (Figure 1). Pulling OSDKEYilow switches the signal on the OSDFILLiinput to the OUTioutput. When the OSDKEY signal is logic high, the signal at IN_ is switched to the output. This switching action is repeat­ed on a pixel-by-pixel basis for each scan line. In this way any synchronized video signal, including arbitrary graphics, can be inserted on the screen (Figure 9).
This technique for inserting OSD display information is an improvement over the way it has traditionally been done. Other OSD techniques require an external fast mux and a buffer for each output.
Crosstalk and Board Routing Issues
Improper signal routing causes performance problems. The MAX4358 has a typical crosstalk rejection of
-62dB at 6MHz. A bad PC board layout degrades the crosstalk rejection by 20dB or more. To achieve the best crosstalk performance:
1.Place ground isolation between long critical signal PC board trace runs. These traces act as a shield to potential interfering signals. Crosstalk can be degraded from parallel traces as well as directly above and below on adjoining PC board layers.
Table 7. 7-Bit Serial Control Word Bit Assignments (Mode 1: Complete Matrix Mode Programming)
Figure 9. Improved Implementation of On-Screen Display
BIT NAME FUNCTION
6 (MSB) Output Enable Enable bit for output, 0 = disable, 1 = enable.
5 Gain Set Gain Select for output buffer, 0 = gain of +1V/V, 1 = gain of +2V/V.
4 Input Address 4 MSB of input channel select address.
3 Input Address 3
2 Input Address 2
1 Input Address 1
0 (LSB) Input Address 0 LSB of input channel select address
COMPUTER CONTROL
CAMERAS
SYNC0
SYNC1
SYNC15
OSD
OSD
OSD
MEMORY
IN0
IN1
IN31
OSDFILL0
OSDKEY0
OSDFILL1
OSDKEY1
OSDFILL15
OSDKEY15
MAX4358
OUT0
OUT1
OUT15
SYNC0
SYNC15
SYNC1
MONITOR
MONITOR
MONITOR
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 39
2.Maintain controlled-impedance traces. Design as
many of the PC board traces as possible to be 75 transmission lines. This lowers the impedance of the traces reducing a potential source of crosstalk. More power will be dissipated due to the output buffer dri­ving a lower impedance.
3.Minimize ground current interaction by using a good ground plane strategy.
In addition to crosstalk, another key issue of concern is isolation. Isolation is the rejection of undesirable feed­through from input-to-output with the output disabled. The MAX4358 achieves a -110dB isolation at 6MHz by selecting the pinout configuration such that the inputs and outputs are on opposite sides of the package. Coupling through the power supply is a function of the quality and location of the supply bypassing. Use appropriate low-impedance components and locate them as close as possible to the IC. Avoid routing the inputs near the outputs.
Power-Supply Bypassing
The MAX4358 operates from a single +5V or dual ±3V to ±5V supplies. For single-supply operation, connect all VEEpins to ground and bypass all power-supply pins with a 0.1µF capacitor to ground. For dual-supply systems, bypass all supply pins to ground with 0.1µF capacitors.
Power in Large Systems
The MAX4358 has been designed to operate with split
supplies down to ±3V or a single supply of +5V. Operating at the minimum supply voltages reduces the power dissipation by as much 40% to 50%. At ±5V, the MAX4358 consumes 195mW (0.38mW/point).
Driving a PC-Board Interconnect or Cable
(A
V
= +1V/V or +2V/V)
The MAX4358 output buffers can be programmed to either AV= +1V/V or +2V/V. The +1V/V configuration is typically used when driving short lengths (less than 3cm), high impedance, "local" PC board traces. To drive a cable or a 75transmission line trace, program the gain of the output buffer to +2V/V and place a 75 resistor in series with the output. The series termination resistor and the 75load impedance act as a voltage divider that divides the video signal in half. Set the gain to +2V/V to transmit a standard 1V video signal down a cable. The series 75resistor is called the back­match, reverse termination, or series termination. This 75resistor reduces reflections and provides isolation, increasing the output capacitive driving capability.
Matrix Programming
The MAX4358’s unique digital interface simplifies pro­gramming multiple MAX4358 devices in an array. Multiple devices are connected with DOUT of the first
Figure 10. Matrix Mode Programming
CHIP ADDRESS = 0 CHIP ADDRESS = 1
DOUT
DIN
HOST
CONTROLLER
MAX4358
SCLK
CE
MODE
UPDATE
A3
A2
A1
A0
VIRTUAL SERIAL BUS (MODE 0: INDIVIDUAL OUTPUT ADDRESS MODE)
CHIP ADDRESS = 2
DIN
MAX4358
SCLK
CE
MODE
UPDATE
DOUT
A3
A2
V
A1
A0
DD
DOUT NEXT DEVICE
DIN
MAX4358
SCLK
CE
MODE
UPDATE
A3
V
A2
A1
A0
DD
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
40 ______________________________________________________________________________________
device connecting to DIN of the second device, and so on (Figure 11). Two distinct programming modes, Individual Output Address Mode (MODE = 0) and Complete Matrix Mode (MODE = 1) are selected by toggling a single MODE control pin high or low. Both modes operate with the same physical board layout. This allows initial programming of the IC by daisy­chaining and sending one long data word while still being able to immediately address and update individ­ual locations in the matrix.
Individual Output Address Mode
(Mode = 0)
In Individual Output Address Mode, the devices are connected in a serial-bus configuration, with the data routing gate (Figure 3) connecting DIN to DOUT, mak­ing each device a virtual node on the serial bus. A sin­gle 16-bit control word is sent to all devices simultaneously. Only the device with the corresponding chip address responds to the programming word and updates its output. In this mode the chip address is set via hardware pin strapping of A3–A0. The host commu­nicates with the device by sending a 16-bit word con­sisting of 1 don’t care bit, 4-chip address bits, 11 bits of data to make the word exactly two bytes in length. The 11 data bits are broken down into 4 bits to select the output to be programmed, 1 bit to set the output enable, 1 bit to set gain and 5 bits to the select the
input to be connected to that output. In this method, the matrix is programmed one output at a time.
Complete Matrix Mode (Mode = 1)
In Complete Matrix Mode, the devices are connected in
a daisy-chain fashion where n 5112 bits are sent to program the entire matrix, where n = the number of MAX4358 devices connected in series. The data word is structured such that the first bit is the LSB of the last device in the chain and the last data bit is the MSB of the first device in the chain. The total length of the data word is equal to the number of crosspoint devices to be programmed in series times 112 bits per crosspoint device. This programming method is most often used at start-up to initially configure the switching matrix.
Operating at +5V Single-Supply with
A
V
= +1V/V or +2V/V
The MAX4358 guarantees operation with a single +5V supply and a gain of +1V/V for standard video-input signals (1Vp-p). To implement a complete video matrix switching system capable of gain = +2V/V while operat­ing with a +5V single supply, combine the MAX4358 crosspoint switch with Maxim’s low-cost, high-perfor­mance video amplifiers optimized for single +5V supply operation (Figure 11). The MAX4450 single and MAX4451 dual op amps are unity-gain-stable devices that combine high-speed performance with Rail-to-
Figure 11. Typical Single +5V Supply Application
+5V
V
CC
1V
IN0
IN1
OUT0
OUT1
IN31
AGND V
OUT15
MAX4358
EE
P-P
U2
500
500
+5V
= 75
Z
220µF
0
MONITOR 0
75
2V
P-P
75
U2 = MAX4450
OR 1/4 MAX4383
Rail®outputs. The common-mode input voltage range extends beyond the negative power-supply rail (ground in single-supply applications). The MAX4450 is avail­able in the ultra-small 5-pin SC70 package, while the MAX4451 is available in a space-saving 8-pin SOT23 package. The MAX4383 is a quad op amp available in a 14-pin TSSOP package. The MAX4380/MAX4381/ MAX4382 and MAX4384 offer individual output-high­impedance disable making these amplifiers suitable for wired-OR connections.
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________ 41
Chip Information
TRANSISTOR COUNT: 44,890
PROCESS: BiCMOS
Rail-to-Rail is a registered trademark of Nippon Motorola, Inc.
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
42 ______________________________________________________________________________________
Pin Configuration
TOP VIEW
EE
IN8
AGND
IN7
AGND
IN6
AGND
IN5
AGND
IN4
AGND
IN3
AGND
IN2
AGND
IN1
AGND
IN0
AGND
OSDFILL0
OSDFILL1
OSDFILL2
OSDFILL3
OSDFILL4
OSDFILL5
OSDFILL6
OSDFILL7
OSDFILL8
OSDFILL9
OSDFILL10
OSDFILL11
OSDFILL12
OSDFILL13
OSDFILL14
OSDFILL15
111
110
AGND
109
V
144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
1
AGND
IN10
AGND
IN11
AGND
IN12
AGND
IN13
AGND
IN14
AGND
IN15
AGND
IN16
AGND
IN17
AGND
IN18
AGND
IN19
AGND
IN20
AGND
IN21
AGND
IN22
AGND
IN23
AGND
IN24
AGND
IN25
AGND
IN26
V
IN9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
CC
MAX4358
108
107
106
105
104
103
102
101
100
AGND
AGND
V
CC
OUT0
V
EE
OUT1
V
CC
OUT2
V
EE
99
OUT3
98
V
CC
97
OUT4
96
V
EE
OUT5
95
V
94
CC
OUT6
93
V
92
EE
OUT7
91
V
90
CC
89
OUT8
88
V
EE
87
OUT9
86
V
CC
85
OUT10
84
V
EE
83
OUT11
82
V
CC
81
OUT12
80
V
EE
79
OUT13
78
V
CC
77
OUT14
76
V
EE
75
OUT15
74
V
CC
73
AGND
3738394041424344454647484950515253545556575859606162636465666768697071
IN27A3IN28A2IN29A1IN30A0IN31
DGND
AOUT
MODE
DIN
SCLK
UPDATE
RESET
CE
DOUT
OSDKEY15
OSDKEY14
OSDKEY13
OSDKEY12
OSDKEY11
OSDKEY10
OSDKEY9
OSDKEY8
OSDKEY7
OSDKEY6
OSDKEY5
OSDKEY4
OSDKEY3
OSDKEY2
TQFP
OSDKEY1
OSDKEY0
72
DD
V
AGND
MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 43
© 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information
TQFP20x20x1.0mm.EPS
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