(MAX7481 / MAX7482) bidirectional video filters/buffers - Maxim Integrated Products
Description
www.
DataSheet4U.
com
19-0671; Rev 0; 11/06
Bidirectional Video Filters/Buffers for Composite and S-Video Portable Media Devices
General Description
The MAX7481/MAX7482 bidirectional video filters/ buffers provide the reconstruction filter and line drive buffer for both composite (CVBS) and S-Video (Y/C) video signals in playback mode, and anti-aliasing in record mode for portable media devices.
Each channel consists of a lowpass filter and an output buffer capable of driving a full 2VP-P video signal into one standard 150Ω load (DC-coupled to ground).
In record mode, the MAX7481/MAX7482 output buffers have a gain of +6dB.
In playback mode, the MAX7481 output buffers have a gain of +6dB and the MAX7482 output buffers have a gain of +7dB.
The MAX7481/MAX7482 feature DirectDrive™ by utilizing an internal negative charge pump and regulator to maintain the output blanking level at ground, eliminating the need for a negative supply voltage, a large output coupling capacitor, or a sag correction configuration.
The MAX7481/MAX7482 operate from a single +2.
7V to +3.
6V power supply.
These devices are available in a space-saving 28-pin TQFN package and operate over the -40°C to +85°C extended temperature range.
Features
♦ Composite and S-Video, Video-Playback and VideoRecord Interface for Portable Video Devices ♦ Saves Space by Sharing Connectors in Portable Devices ♦ DirectDrive Eliminates Expensive AC-Coupling Capacitors Blanking Level at Ground with Single Supply ♦ Composite and Y/C Signals ♦ Advanced Power-Down Modes for Extended Battery Life ♦ Low Supply Current in Shutdown Mode, < 1µA (typ) ♦ Filter Response Ideal for NTSC and PAL ♦ +6dB (MAX7481) or +7dB (MAX7482) Gain ♦ +2.
7V to +3.
6V Single-Supply Operation ♦ Small, 28-Pin, TQFN Package (5mm x 5mm)
MAX7481/MAX7482
Ordering Information
PART MAX7481ETI+ MAX7482ETI+ TEMP RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 28 TQFN-EP* 28 TQFN-EP* PKG CODE T2855-6 T2855-6
Applications
Portable Media Devices Digital Camcord...
Similar Datasheet
