MAXIM MAX4357 Technical data

General Description

The MAX4357 is a 32  16 highly integrated video crosspoint switch matrix with input and output buffers. 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. All inputs and outputs are buffered, with all outputs able to drive standard 75Ω reverse-terminated video loads.

The switch matrix configuration and output buffer gain are programmed through an SPI™/QSPI™-compatible, 3-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 MAX4357 is available in a 128-pin TQFP package and specified over an extended -40°C to +85°C temperature range.

Applications

Security Systems

Video Routing Video-On-Demand Systems

Features

o 32 16 Nonblocking Matrix with Buffered Inputs

and Outputs

o Operates from ±3V, ±5V, or +5V Supplies

o Each Output Individually Addressable

o Individually Programmable Output Buffer Gain

(A

V

= +1V/V or +2V/V)

o High-Impedance Output Disable for Wired-OR

Connections

o 0.1dB Gain Flatness to 12MHz

o Minimum -62dB Crosstalk, -110dB Isolation at

6MHz

o 0.05%/0.1° Differential Gain/Differential Phase

Error

o Low 220mW Power Consumption (0.43mW per

point)

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch

with I/O Buffers

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-2209; Rev 1; 5/09

Pin Configuration appears at end of data sheet.

SPI/QSPI are trademarks of Motorola, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Typical Operating Circuit

MAX4357

32 x 16

SWITCH MATRIX

POWER-ON

RESET

SERIAL

INTERFACE

THERMAL

SHUTDOWN

DECODE LOGIC

DISABLE ALL OUTPUTS

LATCHES

512

16

MATRIX REGISTER

112 BITS

UPDATE REGISTER

16 BITS

ENABLE/DISABLE

AV*

*A

V

= +1V/V OR +2V/V

A0-A3 MODE

IN0

IN1

IN2

IN31

DIN

SCLK

UPDATE

CE

RESET

OUT0

OUT1

OUT2

OUT15

V

CC

V

EE

DGND

V

DD

DOUT

AOUT

AGND

Functional Diagram

PART TEMP RANGE PIN-PACKAGE

MAX4357ECD -40°C to +85°C 128 TQFP

CAMERAS

IN0

IN1

MAX4357

IN31

OUT0

OUT1

OUT15

MONITOR

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V

(VCC= +5V, VEE= -5V, VDD= +5V, AGND = DGND = 0, VIN_ = 0, RL= 150Ω to 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_ 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..........................(V

DD

+ 0.3V) to (DGND - 0.3V)

Current into Any Analog Input Pin (IN_) ...........................±50mA

Current into Any Analog Output Pin (OUT_).....................±75mA

Continuous Power Dissipation (T

A

= +70°C)

128-Pin TQFP (derate 25mW/°C above +70°C).................2W

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

Operating Supply Voltage Range

Logic-Supply Voltage Range

PARAMETER SYMBOL

V

CC

V

EE

VDD to DGND

Guaranteed by PSRR test

(VEE + 2.5V) < VIN_ < (VCC - 2.5V),

= +1V/V, RL = 150Ω

A

V

CONDITIONS

MIN

4.5

2.7

0.97

TYP

0.995

MAX UNITS

10.5

5.5

1

V

Gain (Note 1)

Gain Matching (Channel to Channel)

Temperature Coefficient of Gain TC

Input Voltage Range

VIN_

(VEE + 2.5V) < VIN_ < (VCC - 2.5V),

= +1V/V, RL = 10kΩ

A

V

A

(VEE + 3.75V) < VIN_ < (VCC - 3.75V),

V

AV = +2V/V, RL = 150Ω

(VEE + 3.75V) < VIN_ < (VCC - 3.75V) AV = +2V/V, RL = 10kΩ

(VEE + 1V) < VIN_ < (VCC - 1.2V), AV = +1V/V, RL = 10kΩ

RL = 10kΩ

RL = 150Ω

AV

AV = +1V/V

AV = +2V/V

RL = 10kΩ

RL = 150Ω

RL = 10kΩ

RL = 150Ω

0.99

1.92

1.94

0.95

V

+ 1

E E

V

E E

VEE + 3

V

E E

+ 2.5

+ 3.75

0.999

1.996

2.008

0.994

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

- 3.75

C C

V/V

%

ppm/°C

V

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch

with I/O Buffers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V (continued)

(VCC= +5V, VEE= -5V, VDD= +5V, AGND = DGND = 0, VIN_ = 0, RL= 150Ω to 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

CONDITIONS

V

OUT

I

RIN_ (VEE + 1V) < VIN_ < (VCC - 1.2V)

V

OFFSET

I

SC

Z

OUT

I

OD

PSRR 4.5V < (V

I

CC

I

EE

I

DD

RL = 10kΩ

RL = 150Ω

B

AV = +1V/V

AV = +2V/V

Sinking or sourcing, RL = 1Ω

(VEE + 1V) < VIN_ < (VCC - 1.2V)

(VEE + 1V) < V

CC

RL = ∞

_ < (VCC - 1.2V)

OUT

- VEE) < 10.5V

Outputs enabled, T

= +25°C

A

Outputs enabled

Outputs disabled

Outputs enabled,

= +25°C

T

A

Outputs enabled

Outputs disabled

MIN

VEE + 1

V

+ 2.5

E E

10 ±5

60

55

95

50

TYP

4

±10

±40

0.2

0.004

70

100

4

MAX UNITS

V

- 1.2

C C

V

- 2.5

C C

11

±20

±40

1

150

175

75

150

175

75

8

V

µA

MΩ

mV

mA

Ω

µA

dB

mA

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers

4 _______________________________________________________________________________________

DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V

(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_ = 0, RL= 150Ω to AGND, and TA= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

A

= +25°C.)

PARAMETER SYMBOL

Operating Supply Voltage Range

Logic-Supply Voltage Range

Gain (Note 1)

VCC - V

VDD to DGND

A

V

CONDITIONS

Guaranteed by PSRR test

EE

(VEE + 1V) < VIN_ < (VCC - 1.2V), A

= +1V/V, RL = 150Ω

V

(VEE + 1V) < VIN_ < (VCC - 1.2V),

= +1V/V, RL = 10kΩ

A

V

(VEE + 2V) < VIN_ < (VCC - 2.1V),

= +2V/V, RL = 150Ω

A

V

(VEE + 2V) < VIN_ < (VCC - 2.1V)

= +2V/V, RL = 10kΩ

A

V

MIN

4.5

2.7

0.94

0.96

1.92

1.94

TYP MAX UNITS

0.983

0.993

1.985 2.08

2.00

10.5

5.5

1

2.06

V

V/V

Gain Matching (Channel to Channel)

Temperature Coefficient of Gain

Input Voltage Range

Output Voltage Range

Input Bias Current

Input Resistance

Output Offset Voltage

TC

VIN_

V

OUT

I

R

V

OFFSET

B

IN

RL = 10kΩ

RL = 150Ω

AV

AV = +1V/V

AV = +2V/V

RL = 10kΩ

RL = 150Ω

RL = 10kΩ

RL = 150Ω

RL = 10kΩ

RL = 150Ω

(VEE + 1V) < VIN_ < (VCC - 1.2V)

AV = +1V/V

AV = +2V/V

VEE + 1

VEE + 2

VEE + 1

0.5

10

4

1.5

2

VCC - 1.2

VCC - 2.1

VCC - 1.2

11

ppm/°C

10 ±5

±10

±20

±40

%

V

µA

MΩ

mV

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch

with I/O Buffers

_______________________________________________________________________________________ 5

DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V (continued)

(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_ = 0, RL= 150Ω to 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_ = +1.75V, AV= +1V/V, RL= 150Ω to 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) < VIN_ < (VCC - 1.2V) 0.2 Ω

EE

(V

+ 1V) < V

EE

R

= ∞

L

RL = ∞

OUT

- VEE) < 10.5V 60 75 dB

CC

= 1Ω ±40 mA

L

_ < (V

- 1.2V) 0.004 1 µA

CC

Outputs enabled 90 Outputs disabled 45 Outputs enabled 85 Outputs disabled 40

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

V

CC

V

DD

DGND

V

AV

IN

OUT

Guaranteed by PSRR test 4.5 5.5 V

to

2.7 5.5 V

(V

+ 1V) < V

EE

A

= +1V/V, RL = 150Ω

V

(V

+ 1V) < V

EE

A

= +1V/V, RL = 10kΩ

V

R

= 10kΩ 0.5 3

L

RL = 150Ω 0.5 3

< (VCC - 2.5V),

IN

< (VCC - 1.2V),

IN

0.94 0.995 1

10 ppm/°C

V

A

= +1V/V

V

AV = +1V/V,

R

= 10kΩ

L

A

= +1V/V,

V

R

= 150Ω

L

R

= 10kΩ

L

R

= 150Ω

L

+

EE

1

V

+

EE

1

V

+

EE

1

V

+

EE

1

VCC -

1.2

2.5

1.2

2.5

mA

V

%

V

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers

6 _______________________________________________________________________________________

DC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY +5V (continued)

(VCC= +5V, VEE= 0, VDD= +5V, AGND = DGND = 0, VIN_ = +1.75V, AV= +1V/V, RL= 150Ω to AGND, and TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at TA= +25°C.)

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

Quiescent Supply Current

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

4 11 µA

B

V

IN

V

OFFSET AV

SC

OUT

I

OD

PSRR

I

CC

I

EE

I

DD

+ 1V < VIN_ < VCC - 1.2V 10 MΩ

EE

= +1V/V ±10 ±40 mV

Sinking or sourcing, R (V

+ 1V) < VIN_ < (VCC - 1.2V)

EE

(V

+ 1V) < V

EE

4.5V < V

V

< 5.5V

EE

R

= ∞

L

R

= ∞

L

OUT

-

CC

Outputs enabled, T Outputs disabled 40 Outputs enabled, T Outputs disabled 35

= 1Ω

L

_ < (VCC - 1.2V) 0.004 1 µA

T

= +25°C to +85°C 50 65

A

T

= -40°C to +85°C 35

A

= +25°C 90

A

= +25°C 85

A

±35

0.2

4

mA

Ω

dB

mA

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch

with 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_ = 0, RL= 150Ω to AGND, and T

A

=

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_ = 0, RL= 150Ω to AGND, and TA= +25°C, unless otherwise noted.)

Input Voltage High Level V

Input Voltage Low Level V

Input Current High Level I

Input Current Low Level I

Output Voltage High Level V

Output Voltage Low Level V

Output Current High Level I

Output Current Low Level I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VDD = +5.0V 3

IH

VDD = +3V 2

V

= +5.0V 0.8

IL

IH

IL

OH

OL

OH

OL

DD

VDD = +3V 0.6

V

> 2V

I

VI < 1V

I

SOURCE

I

SOURCE

I

= 1mA, VDD = +5V 0.1 0.3

SINK

I

= 1mA, VDD = +3V 0.1 0.3

SINK

VDD = +5V, V

VDD = +3V, V

VDD = +5V, V

VDD = +3V, VO = +0.3V 1 8

Excluding RESET -1 0.01 1 RESET -30 -20 Excluding RESET -1 0.01 1 RESET -300 -235

= 1mA, VDD = +5V 4.7 4.9

= 1mA, VDD = +3V 2.7 2.9

= +4.9V 1 4

O

= +2.7V 1 8

OUT

= +0.1V 1 4

O

V

µA

V

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

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, AV = +1V/V 150

OUT

V

_ = 2V step, AV = +2V/V 160

OUT

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

MHz

Vµs

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers

8 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V

(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_= 0, RL= 150Ω to 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_ = 0, RL= 150Ω to AGND, and TA= +25°C, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

A

= +1V/V 60

V

_ = 0 to 2V

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%

OUT

step

A

= +1V/V 50

V

AV = +2V/V 50

f = 100kHz 70

f = 1MHz 68

R

= 1kΩ 0.01

L

RL = 150Ω 0.05

R

= 1kΩ 0.03

L

RL = 150Ω 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

V

A

= +2V/V 60

V

Output enabled 3 Output disabled 4k

ns

mV

dB

%

D eg r ees

RMS

Ω

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 VOUT

BW

0.1dB-LS

V

_ = 20mVp-p

OUT

V

_ = 200mVp-p

OUT

V

_ = 2Vp-p

OUT

V

_ = 20mVp-p

OUT

_ = 200mVp-p

V

_ = 2Vp-p

OUT

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

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch

with I/O Buffers

_______________________________________________________________________________________ 9

AC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V (continued)

(VCC= +3V, VEE= -3V, VDD= +3V, AGND = DGND = 0, VIN_ = 0, RL= 150Ω to AGND, AV= +1V/V, and TA= +25°C, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

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)

OUT

V

_ = 2V step AV = +2V/V 120

OUT

A

= +1V/V 60

= 0 to 2V step

V

O

A

= +1V/V 15

V

AV = +2V/V 20

f = 100kHz 60

f = 1MHz 40

R

= 1kΩ 0.03

L

RL = 150Ω 0.2

R

= 1kΩ 0.08

L

RL = 150Ω 0.2

V

A

= +2V/V 60

V

Vµs

ns

mV

dB

%

D eg r ees

V

_ = 2V step AV = +1V/V 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

_ 5 pF

IN

BW = 6MHz 73 µV

RMS

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

Ω

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers

10 ______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY +5V

(VCC= +5V, VEE= 0, VDD= +5V, AGND = DGND = 0, VIN_ = 1.75V, RL= 150Ω to AGND, AV= +1V/V, and TA= +25°C, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

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) 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

BW

0.1dB-MS

BW

SS

MS

LS

0.1dB-SS

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

= 1kΩ 0.03

L

RL = 150Ω 0.15

R

= 1kΩ 0.06

L

RL = 150Ω 0.2

f = 6MHz -110 dB

e

n

IN

_

BW = 6MHz 73 µV

5 pF

Amplifier in disable mode 3 pF

30 pF

Z

OUT

f = 6MHz

Output enabled 3 Output disabled 4k

dB

%

D eg r ees

RMS

Ω

MAX4357

SWITCHING CHARACTERISTICS

((VCC- VEE) = +4.5V to +10.5V, VDD= +2.7V to +5.5V, DGND = AGND = 0, VIN_ = 0 for dual supplies, VIN_ = +1.75V for single supply, RL= 150Ω to 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.

Note 2: Logic-level characteristics apply to the following pins: DIN, DOUT, SCLK, CE, UPDATE, RESET, A3–A0, MODE, and AOUT. 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 T

A

= +25°C. Specifications over temperature limits are guaranteed by design.

32 x 16 Nonblocking Video Crosspoint Switch

with I/O Buffers

______________________________________________________________________________________ 11

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Delay: UPDATE to Video Out t

Delay: UPDATE to AOUT 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

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

Logic state change in DOUT on active

SCLK edge

= 0.5V, 1kΩ pulldown to AGND 300 800 ns

Output disabled, 1kΩ pulldown to AGND,

= 0.5V

V

IN

30 200 ns

200 800 ns

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

100 ns

300 ns 10kΩ pulldown to AGND 600 ns

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch with 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 I/O 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

MAX4357

32 x 16 Nonblocking Video Crosspoint Switch

with I/O Buffers

______________________________________________________________________________________ 13

Figure 1. Timing Diagram

Timing Diagram

Ce: CE

Ck: SCLK

Di: DIN

Do: DOUT

t

Ud: UPDATE

Vo: OUT_

Ao: AOUT

Rst: RESET

t

PdHOeVo

Oe: OUTPUT ENABLE

t

MnHCk

PdDo

DATA AND CONTROL TIMING

t

SuCe

t

MnLCk

SuDi

t

HdUd

Hi-Z

t

PdUdAo

t

PdLOeVo

t

HdDi

MnLUd

t

PdUdVo

t

WTrVo

t

SuUd

t

HdCe

PdRstVo

t

MnlRst

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

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: 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