MAX7450 Datasheet | Maxim Integrated

Description The MAX7450/MAX7451/MAX7452 plete 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 ±6d B, 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 +6d B) 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. Features - Back-Porch Clamp to GND (MAX7450/MAX7451) - Adjustable Back-Porch Clamp (MAX7452) - Automatic Gain Control (±6d B Range) Normalizes Signals to Standard Video Level - Input Fault Detection with LOS Output - Inherent 50Hz/60Hz Input Rejection of 60d B - Single-Supply Operation: MAX7452 (+5V) - Out-of-Band Noise Filter - Output Buffer Drives Standard 150Ω Video Load with 0d B or +6d B Gain - Dual-Supply Operation MAX7450 (±5V) MAX7451 (±3.3V) - Tiny 8-Pin SO Package MAX7450/MAX7451/MAX7452 Ordering Information PART† MAX7450ESA MAX7451ESA MAX7452ESA TEMP RANGE PINSUPPLY PACKAGE VOLTAGE (V) ±5 ±3.3 Applications Signal Conditioner for Standard-Definition Video Inputs Security Video Systems Video-Switching Systems -40°C to +85°C 8 SO-EP- -40°C to +85°C 8 SO-EP- -40°C to +85°C 8 SO-EP- +5 - EP = Exposed pad. †Package code = S8E-12. Functional Diagram VCC GAIN SET (0d B OR +6d B) VIDEO INPUT NOISE...