MAX4355 Datasheet, PDF (1/40 Pages) Maxim Integrated Products – 16x16 Nonblocking Video Crosspoint Switch with I/O Buffers

19-2208; Rev 0; 10/01
16 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
General Description
The MAX4355 is a 16 ✕ 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 MAX4355 is available in a 100-pin TQFP package
and specified over an extended -40°C to +85°C tem-
perature range.
Applications
Security Systems
Video Routing
Video-on-Demand Systems
Typical Operating Circuit
CAMERAS
IN0
OUT0
IN1
MAX4355
OUT1
IN15
OUT15
MONITOR
MONITOR
MONITOR
Features
o 16 ✕ 16 Nonblocking Matrix with Buffered Inputs
and Outputs
o Operates from ±3V, ±5V, or +5V Supplies
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 14MHz
o -62dB Crosstalk, -110dB Isolation at 6MHz
o 0.02%/0.12° Differential Gain/Differential Phase
Error
o Low 195mW Power Consumption (0.76mW per
Point)
Ordering Information
PART
MAX4355ECQ
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
100 TQFP
Pin Configuration appears at end of data sheet.
Functional Diagram
MAX4355
IN0
IN1
16 x 16
SWITCH MATRIX
IN2
IN15
RESET
DIN
SCLK
UPDATE
CE
POWER-ON THERMAL
RESET SHUTDOWN
DISABLE ALL OUTPUTS
256 ₁₆
DECODE LOGIC
SERIAL
INTERFACE
LATCHES
MATRIX REGISTER
96 BITS
UPDATE REGISTER
16 BITS
A0–A3 MODE
*AV = +1V/V OR +2V/V
AV*
AV*
AV*
AV*
16
OUT0
OUT1
OUT2
OUT15
VCC
VEE
AGND
VDD
DGND
DOUT
AOUT
SPI and 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’s website at www.maxim-ic.com.