Top

Bidirectional Video Filters/Buffers for Composite and S-Video Portable Media Devices

Complete Bidirectional Anti-Aliasing and Reconstruction Filters Enable Y/C and CVBS Connector Sharing in Portable Media Devices

Product Details

Key Features

Simplified Block Diagram

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.

Key Features

  • Composite and S-Video, Video-Playback and Video-Record 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)

Applications/Uses

  • Digital Camcorders
  • Digital Cameras
  • Portable Media Devices

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.

Simplified Block Diagram

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.