19-2209; Rev 1; 5/09
32 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
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 initializa-
tion. On power-up, all outputs are initialized in the dis-
abled 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-on-
demand systems.
The MAX4357 is available in a 128-pin TQFP package
and specified over an extended -40°C to +85°C tem-
perature range.
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
Ordering Information
PART
MAX4357ECD
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
128 TQFP
Applications
Security Systems
Video Routing
Video-On-Demand Systems
Pin Configuration appears at end of data sheet.
Functional Diagram
Typical Operating Circuit
CAMERAS
IN0
IN1
OUT1
MAX4357
MONITOR
OUT0
MONITOR
MAX4357
IN0
A
V
*
ENABLE/DISABLE
OUT0
IN1
32 x 16
SWITCH MATRIX
A
V
*
OUT1
IN2
A
V
*
OUT2
IN31
RESET
POWER-ON
RESET
THERMAL
SHUTDOWN
A
V
*
OUT15
DISABLE ALL OUTPUTS
512 16
16
V
CC
V
EE
AGND
V
DD
DGND
DOUT
IN31
OUT15
MONITOR
DIN
SCLK
UPDATE
CE
SERIAL
INTERFACE
DECODE LOGIC
LATCHES
MATRIX REGISTER
112 BITS
UPDATE REGISTER
16 BITS
*A
V
= +1V/V OR +2V/V
A0-A3 MODE
AOUT
SPI/QSPI are trademarks of Motorola, Inc.
________________________________________________________________
Maxim Integrated Products
1
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.
32 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
MAX4357
ABSOLUTE MAXIMUM RATINGS
Analog Supply Voltage (V
CC
- V
EE
) .....................................+11V
Digital Supply Voltage (V
DD
- DGND) ...................................+6V
Analog Supplies to Analog Ground
(V
CC
- AGND) and (AGND - V
EE
) ..................................... +6V
Analog Ground to Digital Ground .........................-0.3V to +0.3V
IN_ Voltage Range .......................... (V
CC
+ 0.3V) to (V
EE
- 0.3V)
OUT_ Short-Circuit Duration to AGND, V
CC
, or V
EE
......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
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.
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V
(V
CC
= +5V, V
EE
= -5V, V
DD
= +5V, AGND = DGND = 0, V
IN
_ = 0, R
L
= 150Ω to AGND, and T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.)
PARAMETER
Operating Supply Voltage
Range
Logic-Supply Voltage Range
SYMBOL
V
CC
-
V
EE
V
DD
to
DGND
(V
EE
+ 2.5V) < V
IN
_ < (V
CC
- 2.5V),
A
V
= +1V/V, R
L
= 150Ω
(V
EE
+ 2.5V) < V
IN
_ < (V
CC
- 2.5V),
A
V
= +1V/V, R
L
= 10kΩ
Gain (Note 1)
A
V
(V
EE
+ 3.75V) < V
IN
_ < (V
CC
- 3.75V),
A
V
= +2V/V, R
L
= 150Ω
(V
EE
+ 3.75V) < V
IN
_ < (V
CC
- 3.75V)
A
V
= +2V/V, R
L
= 10kΩ
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V),
A
V
= +1V/V, R
L
= 10kΩ
Gain Matching
(Channel to Channel)
Temperature Coefficient of Gain
TC
AV
A
V
= +1V/V
Input Voltage Range
V
IN
_
A
V
= +2V/V
R
L
= 10kΩ
R
L
= 150Ω
R
L
= 10kΩ
R
L
= 150Ω
V
EE
+ 1
V
EE
+ 2.5
V
EE
+ 3
V
EE
+ 3.75
R
L
= 10kΩ
R
L
= 150Ω
CONDITIONS
Guaranteed by PSRR test
MIN
4.5
2.7
0.97
0.995
TYP
MAX
10.5
5.5
1
UNITS
V
V
0.99
0.999
1
V/V
1.92
1.94
0.95
1.996
2.008
0.994
0.5
0.5
10
2.08
2.06
1
1.5
2
V
CC
- 1.2
V
CC
- 2.5
V
CC
- 3.1
V
CC
- 3.75
%
ppm/°C
V
2
_______________________________________________________________________________________
32 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5V (continued)
(V
CC
= +5V, V
EE
= -5V, V
DD
= +5V, AGND = DGND = 0, V
IN
_ = 0, R
L
= 150Ω to AGND, and T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.)
PARAMETER
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
SYMBOL
V
OUT
I
B
R
IN
_
V
OFFSET
I
SC
Z
OUT
I
OD
PSRR
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V)
A
V
= +1V/V
A
V
= +2V/V
Sinking or sourcing, R
L
= 1Ω
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V)
(V
EE
+ 1V) < V
OUT
_ < (V
CC
- 1.2V)
4.5V < (V
CC
- V
EE
) < 10.5V
Outputs enabled,
T
A
= +25°C
Outputs enabled
Outputs disabled
Quiescent Supply Current
I
EE
R
L
=
∞
Outputs enabled,
T
A
= +25°C
Outputs enabled
Outputs disabled
I
DD
50
4
55
95
60
R
L
= 10kΩ
R
L
= 150Ω
CONDITIONS
MIN
V
EE
+ 1
V
EE
+ 2.5
4
10
±5
±10
±40
0.2
0.004
70
100
150
175
75
150
175
75
8
mA
1
±20
±40
TYP
MAX
V
CC
- 1.2
V
CC
- 2.5
11
UNITS
V
µA
MΩ
mV
mA
Ω
µA
dB
MAX4357
I
CC
R
L
=
∞
_______________________________________________________________________________________
3
32 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
MAX4357
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V
(V
CC
= +3V, V
EE
= -3V, V
DD
= +3V, AGND = DGND = 0, V
IN
_ = 0, R
L
= 150Ω to AGND, and T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.)
PARAMETER
Operating Supply Voltage
Range
Logic-Supply Voltage Range
SYMBOL
V
CC
- V
EE
V
DD
to
DGND
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V),
A
V
= +1V/V, R
L
= 150Ω
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V),
A
V
= +1V/V, R
L
= 10kΩ
Gain (Note 1)
A
V
(V
EE
+ 2V) < V
IN
_ < (V
CC
- 2.1V),
A
V
= +2V/V, R
L
= 150Ω
(V
EE
+ 2V) < V
IN
_ < (V
CC
- 2.1V)
A
V
= +2V/V, R
L
= 10kΩ
Gain Matching
(Channel to Channel)
Temperature Coefficient of
Gain
TC
AV
A
V
= +1V/V
Input Voltage Range
V
IN
_
A
V
= +2V/V
Output Voltage Range
Input Bias Current
Input Resistance
Output Offset Voltage
V
OUT
I
B
R
IN
V
OFFSET
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V)
A
V
= +1V/V
A
V
= +2V/V
R
L
= 10kΩ
R
L
= 150Ω
R
L
= 10kΩ
R
L
= 150Ω
R
L
= 10kΩ
R
L
= 150Ω
V
EE
+ 1
V
EE
+ 1
V
EE
+ 2
V
EE
+ 2
V
EE
+ 1
V
EE
+ 1
4
10
±5
±10
±20
±40
R
L
= 10kΩ
R
L
= 150Ω
1.92
1.985
2.08
CONDITIONS
Guaranteed by PSRR test
MIN
4.5
2.7
TYP
MAX
10.5
5.5
UNITS
V
V
0.94
0.983
1
0.96
0.993
1
V/V
1.94
2.00
0.5
0.5
10
2.06
1.5
2
%
ppm/°C
V
CC
- 1.2
V
CC
- 1.2
V
CC
- 2.1
V
CC
- 2.1
V
CC
- 1.2
V
CC
- 1.2
11
V
µA
MΩ
mV
V
4
_______________________________________________________________________________________
32 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
DC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±3V (continued)
(V
CC
= +3V, V
EE
= -3V, V
DD
= +3V, AGND = DGND = 0, V
IN
_ = 0, R
L
= 150Ω to AGND, and T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.)
PARAMETER
Output Short-Circuit Current
Enabled Output Impedance
Output Leakage Current,
Disable Mode
DC Power-Supply Rejection
Ratio
SYMBOL
I
SC
Z
OUT
I
OD
PSRR
I
CC
Quiescent Supply Current
I
EE
I
DD
CONDITIONS
Sinking or sourcing, R
L
= 1Ω
(V
EE
+ 1V) < V
IN
_ < (V
CC
- 1.2V)
(V
EE
+ 1V) < V
OUT
_ < (V
CC
- 1.2V)
4.5V < (V
CC
- V
EE
) < 10.5V
R
L
=
∞
R
L
=
∞
Outputs enabled
Outputs disabled
Outputs enabled
Outputs disabled
60
MIN
TYP
±40
0.2
0.004
75
90
45
85
40
3
mA
1
MAX
UNITS
mA
Ω
µA
dB
MAX4357
DC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY +5V
(V
CC
= +5V, V
EE
= 0, V
DD
= +5V, AGND = DGND = 0, V
IN
_ = +1.75V, A
V
= +1V/V, R
L
= 150Ω to AGND, and T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Operating Supply Voltage
Range
Logic-Supply Voltage Range
SYMBOL
V
CC
V
DD
to
DGND
(V
EE
+ 1V) < V
IN
< (V
CC
- 2.5V),
A
V
= +1V/V, R
L
= 150Ω
(V
EE
+ 1V) < V
IN
< (V
CC
- 1.2V),
A
V
= +1V/V, R
L
= 10kΩ
R
L
= 10kΩ
R
L
= 150Ω
TC
AV
R
L
= 10kΩ
Input Voltage Range
V
IN
A
V
= +1V/V
R
L
= 150Ω
A
V
= +1V/V,
R
L
= 10kΩ
A
V
= +1V/V,
R
L
= 150Ω
V
EE
+
1
V
EE
+
1
V
EE
+
1
V
EE
+
1
CONDITIONS
Guaranteed by PSRR test
MIN
4.5
2.7
0.94
0.94
0.995
0.995
0.5
0.5
10
V
CC
-
1.2
V
CC
-
2.5
V
CC
-
1.2
V
V
CC
-
2.5
V
TYP
MAX
5.5
5.5
1
V
1
3
3
%
ppm/°C
UNITS
V
V
Gain (Note 1)
A
V
Gain Matching (Channel to
Channel)
Temperature Coefficient of Gain
Output Voltage Range
V
OUT
_______________________________________________________________________________________
5
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