MAX7452 Maxim Integrated Products, MAX7452 Datasheet

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MAX7452

Manufacturer Part Number
MAX7452
Description
(MAX7450 - MAX7452) Video-Signal Conditioners
Manufacturer
Maxim Integrated Products
Datasheet

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The MAX7450/MAX7451/MAX7452 complete front-end
video-signal conditioners are designed to improve the
quality of standard-definition video signals. The devices
restore the DC level of the video input, correct for
amplitude errors up to ±6dB, detect fault conditions,
and filter out-of-band noise. The MAX7450/MAX7451/
MAX7452 optimize the signal quality for further video
processing through a crosspoint switch or video
decoder (ADC). Each device integrates an input video
clamp, automatic gain control (AGC), loss-of-sync
(LOS) detector, and an out-of-band noise/lowpass filter.
These devices also incorporate a user-selectable
buffer gain (0 or +6dB) and an AGC-disable function.
The MAX7450 and MAX7451 operate from dual power
supplies of ±5V or ±3.3V respectively, and they restore
the video blanking level to GND. The MAX7452 operates
from a single +5V supply and features a user-adjustable
clamp level.
The devices are available in an 8-pin SO package with
an exposed pad and are specified for operation over
the extended (-40°C to +85°C) temperature range.
19-3267; Rev 2; 11/04
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.
Signal Conditioner for Standard-Definition
Video Inputs
Security Video Systems
Video-Switching Systems
VIDEO
INPUT
________________________________________________________________ Maxim Integrated Products
Video-Signal Conditioners with AGC and
General Description
IN
Applications
V
SS
V
NOISE
FILTER
CC
SYNC SEPARATOR
AND AMPLITUDE
DETECTOR
±6dB
GND
♦ Back-Porch Clamp to GND (MAX7450/MAX7451)
♦ Adjustable Back-Porch Clamp (MAX7452)
♦ Automatic Gain Control (±6dB Range) Normalizes
♦ Input Fault Detection with LOS Output
♦ Inherent 50Hz/60Hz Input Rejection of 60dB
♦ Single-Supply Operation: MAX7452 (+5V)
♦ Out-of-Band Noise Filter
♦ Output Buffer Drives Standard 150Ω Video Load
♦ Dual-Supply Operation
♦ Tiny 8-Pin SO Package
*EP = Exposed pad.
Package code = S8E-12.
MAX7450ESA
MAX7451ESA
MAX7452ESA
Signals to Standard Video Level
with 0dB or +6dB Gain
GAIN SET (0dB OR +6dB)
MAX7450
MAX7451
MAX7450 (±5V)
MAX7451 (±3.3V)
PART
0 OR +6dB
Back-Porch Clamp
-40°C to +85°C 8 SO-EP*
-40°C to +85°C 8 SO-EP*
-40°C to +85°C 8 SO-EP*
TEMP RANGE
OUT
Ordering Information
LOS
AGCD
Functional Diagram
75Ω
PIN-
PACKAGE
Features
VOLTAGE (V)
SUPPLY
75Ω
±
+5
±
3.3
5
1

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