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MAX4358 Datasheet

  • MAX4358

  • 32 x 16 Nonblocking Video Crosspoint Switch with OSD Inserti...

  • 1004.00KB

  • Maxim   Maxim

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19-2111; Rev 0; 8/01
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
General Description
The MAX4358 is a 32
鉁?/div>
16 highly integrated video
crosspoint switch matrix with input and output buffers
and On-Screen Display (OSD) Insertion. This device
operates from dual 卤3V to 卤5V supplies or from a sin-
gle +5V supply. Digital logic is supplied from an inde-
pendent single +2.7V to +5.5V supply. Individual
outputs can be switched between an input video signal
source and OSD information through an internal, dedi-
cated 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鈩?/div>
reverse-terminated video loads.
The switch matrix configuration and output buffer gain
are programmed through an SPI/QSPI鈩?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 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 MAX4358 is available in a 144-pin TQFP package
and specified over an extended -40掳C to +85掳C tem-
perature range. The MAX4358 evaluation kit is available
to speed designs.
Features
o
32
鉁?/div>
16 Nonblocking Matrix with Buffered Inputs
and Outputs
o
Operates from a 卤3V, 卤5V, or +5V Supply
o
Fast Switching (40ns) 2:1 OSD Insertion Mux
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掳 Differential Gain/Differential Phase
Error
o
Low 195mW Power Consumption (0.38mW per
point)
MAX4358
Ordering Information
PART
MAX4358ECE
TEMP RANGE
-40掳C to +85掳C
PIN PACKAGE
144 TQFP
Pin Configuration appears at end of data sheet.
Applications
Security Systems
Video Routing
Video-On-Demand Systems
IN0
Functional Diagram
OSDFILL1
OSDFILL0
OSDFILL15
MAX4358
A
V
*
ENABLE/DISABLE
OUT0
Typical Operating Circuit
IN1
32 x 16
SWITCH MATRIX
CAMERAS
2:1
OSD
MUX
A
V
*
OUT1
IN0
IN1
OUT0
MONITOR
IN31
OUT1
IN2
A
V
*
OUT2
IN31
RESET
POWER-ON
RESET
THERMAL
SHUTDOWN
A
V
*
OUT15
MAX4358
OSDFILL0
DISABLE ALL OUTPUTS
512 16
16
V
CC
V
EE
AGND
V
DD
DGND
DOUT
MONITOR
DECODE LOGIC
DIN
SCLK
UPDATE
CE
SERIAL
INTERFACE
LATCHES
MATRIX REGISTER
112 BITS
UPDATE REGISTER
16 BITS
OSD GENERATOR
OSDKEY0
OSDFILL1
OSDKEY1
OUT15
MONITOR
AOUT
*A
V
= +1V/V OR +2V/V
OSDFILL15
OSDKEY15
A0-A3 MODE
OSDKEY0
OSDKEY15
OSDKEY1
SPI/QSPI are trademarks of Motorola, Inc.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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