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Video-Signal Conditioners with AGC and Back-Porch Clamp

Industry's First Video Signal Conditioners with AGC and Back-Porch Clamp-to-GND

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • Back-Porch Clamp to GND (MAX7450/MAX7451)
  • Adjustable Back-Porch Clamp (MAX7452)
  • Automatic Gain Control (±6dB Range) Normalizes Signals to Standard Video Level
  • 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 with 0dB or +6dB Gain
  • Dual-Supply Operation
    • MAX7450 (±5V)
    • MAX7451 (±3.3V)
  • Tiny 8-Pin SO Package

Applications/Uses

  • Security Video Systems
  • Signal Conditioner for Standard-Definition
  • Video Inputs
  • Video Routing and Switching Systems

Description

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.

Simplified Block Diagram

MAX7450, MAX7451, MAX7452: Pin Configuration MAX7450, MAX7451, MAX7452: Pin Configuration Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.