8 × 8 high speed, nonblocking switch array
Pinout and functionally equivalent to the AD8108/AD8109
Drop-in compatible with ADV3224/ADV3225 16 × 8 array
Complete solution
Buffered inputs
Programmable high impedance outputs
8 output amplifiers, G = +1 (ADV3228), G = +2 (ADV3229)
Drives 150 Ω loads
Operates on ±5 V supplies
Low power: 0.5 W
Excellent ac performance
0.5 dB flatness (2 V p-p): 250 MHz (ADV3228), 235 MHz
(ADV3229)
Slew rate: 2500 V/μs
Serial or parallel programming of switch array
72-lead LFCSP (10 mm × 10 mm)
APPLICATIONS
Routing of high speed signals including
Video (NTSC, PAL, S, SECAM, YUV, RGB)
Compressed video (MPEG, wavelet)
3-level digital video (HDB3)
Data communications
Telecommunications
CLK
DATAIN
UPDATE
RESET
8
ADV3228/ADV3229
FUNCTIONAL BLOCK DIAGRAM
CE
INPUTS
SER/PAR
ADV3228/
ADV3229
D0 D1 D2 D3
40-BIT SHIFT REGISTER
WITH 4-BIT
PARALLEL LOADING
328
PARALLEL LATCH
32
DECODE
8 × 4:8 DECODERS
OUTPUT
BUFFER
64
SWITCH
Figure 1.
(RESERVED)
SET INDIVIDUAL
OR RESET ALL
OUTPUTS TO OFF
8
G = +1,
G = +2
Switch
A0
A1
A2
DATAOUT
8
ENABLED/DISABLED
OUTPUTS
09318-001
GENERAL DESCRIPTION
The ADV3228/ADV3229 are high speed 8 × 8 analog crosspoint
switch matrices. They offer a −3 dB large signal bandwidth of
750 MHz (ADV3228) and a slew rate of 2500 V/µs.
The ADV3228/ADV3229 include eight independent output buffers
that can be placed into a high impedance state for paralleling
crosspoint outputs to prevent off channels from loading the output
bus. The ADV3228 has a gain of +1, the ADV3229 has a gain of
+2, and they both operate on voltage supplies of ±5 V. Channel
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
switching is performed via a serial digital control that can
accommodate daisy chaining of several devices or via a parallel
control to allow updating of an individual output without
reprogramming the entire array.
The ADV3228/ADV3229 are available in the 72-lead LFCSP
package over the extended industrial temperature range of
VS = ±5 V, TA = 25°C, RL = 150 Ω, unless otherwise noted.
Table 1.
ADV3228 ADV3229
Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth 200 mV p-p 1200 900 MHz
2 V p-p 750 850 MHz
Gain Flatness 0.1 dB, 2 V p-p 55 50 MHz
0.5 dB, 2 V p-p 250 235 MHz
Propagation Delay 2 V p-p 0.6 0.6 ns
Settling Time 1%, 2 V step 3 3 ns
Slew Rate 2 V step, peak 2500 2500 V/μs
NOISE/DISTORTION PERFORMANCE
Differential Gain Error NTSC or PAL 0.01 0.02 %
Differential Phase Error NTSC or PAL 0.01 0.02 Degrees
Crosstalk, All Hostile, RTO f = 100 MHz −45 −45 dB
f = 5 MHz −87 −70 dB
Off Isolation, Input to Output f = 100 MHz, one channel −80 −87 dB
OIP2 f = 100 MHz, RL = 100 Ω 38 dBm
f = 500 MHz, RL = 100 Ω 15 dBm
OIP3 f = 100 MHz, RL = 100 Ω 32 dBm
f = 500 MHz, RL = 100 Ω 7 dBm
Output 1 dB Compression Point f = 100 MHz, RL = 100 Ω 19 dBm
f = 500 MHz, RL = 100 Ω 10 dBm
Input Voltage Noise Density 50 MHz 18 18 nV/√Hz
DC PERFORMANCE
Gain Error 0.1 0.5 0.2 1.5 %
Gain Matching Channel-to-channel 0.5 1.5 %
Gain Temperature Coefficient 0.5 5 ppm/°C
OUTPUT CHARACTERISTICS
Output Resistance DC, enabled 0.2 0.2 Ω
DC, disabled 15 8 MΩ
Output Disabled Capacitance 2.2 2.6 pF
Output Leakage Current Output disabled 0.5 0.5 μA
Output Voltage Range No load ±3 ±3 V
R
Short-Circuit Current 55 55 mA
INPUT CHARACTERISTICS
Input Offset Voltage Worst case (all configurations) ±5 ±5 mV
Input Offset Voltage Drift 5 5 μV/°C
Input Voltage Range ±3 ±1.5 V
Input Capacitance Any switch configuration 1.8 1.8 pF
Input Resistance 2 2 MΩ
Input Bias Current Any switch configuration ±1 ±1 μA
SWITCHING CHARACTERISTICS
Enable/Disable Time
Switching Time, 2 V Step
Switching Transient (Glitch) 25 50 mV p-p
= 150 Ω ±2.8 ±2.8 V
L
50% UPDATE
50% UPDATE
to 1% settling
to 1% settling
20 20 ns
20 20 ns
Rev. 0 | Page 3 of 24
ADV3228/ADV3229
ADV3228 ADV3229
Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit
POWER SUPPLIES
Supply Current AVCC, outputs enabled, no load 52 70 58 70 mA
AVCC, outputs disabled 12 18 13 18 mA
AVEE, outputs enabled, no load 52 70 58 70 mA
AVEE, outputs disabled 12 18 14 18 mA
DVCC, outputs enabled, no load 6 6 mA
Supply Voltage Range ±4.5 ±5 ±5.5 ±4.5 ±5 ±5.5 V
PSRR DC to 50 kHz, AVCC, AVEE <−60 <−60 dB
f = 100 kHz, AVCC, AVEE −60 −60 dB
f = 10 MHz, AVCC −48 −35 dB
f = 10 MHz, AVEE −35 −55 dB
f = 100 MHz, AVCC −25 −15 dB
f = 100 MHz, AVEE −15 −15 dB
f = 100 kHz, DVCC −90 −90 dB
OPERATING TEMPERATURE RANGE
Temperature Range Operating (still air) −40 +85 −40 +85 °C
θJA Operating (still air) 29 29 °C/W
Rev. 0 | Page 4 of 24
ADV3228/ADV3229
0
TIMING CHARACTERISTICS (SERIAL)
Table 2.
Parameter Symbol Min Typ Max Unit
Serial Data Setup Time t1 10 ns
CLK Pulse Width t2 10 ns
Serial Data Hold Time t3 10 ns
CLK Pulse Separation, Serial Mode t4 10 ns
t
CLK to UPDATE Delay
UPDATE Pulse Width
CLK to DATAOUT Valid, Serial Mode t7 50 ns
Propagation Delay, UPDATE to Switch On or Off
Data Load Time, CLK = 5 MHz, Serial Mode 8 μs
CLK, UPDATE Rise and Fall Times
RESET Time
Timing Diagram—Serial Mode
CLK
DATAIN
1 = LATCHED
UPDATE
= TRANSPARENT
t
1
0
1
0
t1t
OUT07 (D3)OUT07 (RESERVED)OUT00 (D0)
2
3
t
7
t
4
10 ns
5
t
10 ns
6
20 ns
50 ns
30 ns
LOAD DATA INT O
SERIAL REGI STER
ON FALLING EDGE
t
5
TRANSFER DATA FROM SERIAL
REGISTE R T O PARALLEL
LATCHES DURING LOW LEVEL
t
6
DATAOUT
09318-002
Figure 2. Timing Diagram, Serial Mode
LOGIC LEVELS
Table 3. Logic Levels
VIH V
RESET,
/PAR, CLK,
SER
DATA IN, CE
UPDATE
2.0 V min 0.8 V max 2.4 V min 0.4 V max 2 μA max 2 μA max 2 μA max 300 μA max 3 mA min 1 mA min
V
IL
RESET
,
/PAR, CLK,
SER
,
DATA IN, CE
UPDATE
,
V
OH
I
OL
DATA OUT DATA OUT
I
IH
/PAR,
SER
CLK, DATA IN,
CE
, UPDATE
I
IL
/PAR,
SER
CLK, DATA IN,
CE
, UPDATE
I
IH
RESET
I
IL
RESET
I
OH
OL
DATA OUT DATA OUT
Rev. 0 | Page 5 of 24
ADV3228/ADV3229
TIMING CHARACTERISTICS (PARALLEL)
Table 4.
Parameter Symbol Min Typ Max Unit
Parallel Data Setup Time t1d 10 ns
Address Setup Time t1a 10 ns
CLK Pulse Width t2 10 ns
Parallel Data Hold Time t3d 10 ns
Address Hold Time t3a 10 ns
CLK Pulse Separation t4 20 ns
t
UPDATE Pulse Width
CLK, UPDATE Rise and Fall Times
RESET Time
Timing Diagram—Parallel Mode
CLK
A0 TO A2
D0 TO D3
1 = LATCHED
UPDATE
0 = TRANSPARENT
1
0
1
0
1
0
t
1a
10 ns
5
50 ns
30 ns
t
2
t
1d
Figure 3. Timing Diagram, Parallel Mode
t
4
t
3a
t
3d
t
5
09318-003
Rev. 0 | Page 6 of 24
ADV3228/ADV3229
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter Rating
Analog Supply Voltage (AVCC to AVEE) 11 V
Digital Supply Voltage (DVCC to DGND) 6 V
Supply Potential Difference (AVCC to DVCC) ±0.5 V
Ground Potential Difference
±0.5 V
(AGND to DGND)
Maximum Potential Difference
6 V
(DVCC to AVEE)
Analog Input Voltage AVEE < VIN < AVCC
Digital Input Voltage DGND < DIN < DVCC
Exposed Paddle Voltage AGND
Output Voltage (Disabled Analog Output) AVEE < V
< AVCC
OUT
Output Short-Circuit
Duration Momentary
Current
Internally limited
to 55 mA
Temperature
Storage Temperature Range −65°C to +125°C
Operating Temperature Range −40°C to +85°C
Junction Temperature 150°C
Lead Temperature
300°C
(Soldering, 10 sec)
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 6. Thermal Resistance
Package Type θJA θ
72-Lead LFCSP_VQ 29 0.5 °C/W
Unit
JC
POWER DISSIPATION
The ADV3228/ADV3229 operate with ±5 V supplies and can
drive loads down to 100 Ω, resulting in a wide range of possible
power dissipations. For this reason, extra care must be taken when
derating the operating conditions based on ambient temperature.
Packaged in the 72-lead LFCSP, the ADV3228/ADV3229 junctionto-ambient thermal impedance (θ
) is 29°C/W. For long-term
JA
reliability, the maximum allowed junction temperature of the
die should not exceed 125°C; even temporarily exceeding this
limit can cause a shift in parametric performance due to a change
in stresses exerted on the die by the package. Exceeding a junction
temperature of 150°C for an extended period can result in device
failure. In Figure 4, the curve shows the range of allowed internal
die power dissipation that meets these conditions over the −40°C
to +85°C ambient temperature range. When using Figure 4, do
not include the external load power in the maximum power
calculation, but do include the load current dropped on the die
output transistors.
7
6
5
4
3
2
MAXIMUM PO WER DISSIPATION (W)
1
0
–40–20020406080
AMBIENT TEMPERATURE (°C)
Figure 4. Maximum Die Power Dissipation vs. Ambient Temperature