The AK4707 is an I²C controlled audio-and-video signal switch matrix designed for dual SCART applications, included in the Audio4homeTM AKM audio product family. The AK4707 video path features a multiplexer for the AC-coupled inputs with clamp/bias, and DC-coupled outputs driving up to 3Vpp. The video input stage includes a signal monitor that supports automatic start-up and sleep functions. The AK4707 audio path features a multiplexer, a stereo PGA, and stereo-to-mono mix-down, with output drive up to 2Vrms. The AK4707 enables easy design and offers cost savings for basic SCART applications.

Audio Path and Switching
 - Stereo audio inputs and outputs including:
  - One differential stereo inputs and Two single-ended stereo inputs
  - 0-18dB PGA in stereo differential line input
  - Two single-ended stereo outputs to drive 2Vrms
  - Stereo/Mono-mix selectable for output
 - Hi audio performance:
   THD+N: -86dB(typ.), DYR: 96dB(typ.)
 - Pop-noise-free Architecture in power on/off sequence

Video Path and Switching
 - Video inputs including:
  - Six inputs as CVBS/Y, Y, R/C, C, G/CVBS, and B to receive ENC output
    signals
  - Four inputs as CVBS/Y, R/C, G, and B to receive VCR output signals
  - A input as CVBS to receive TV output signal
  - Clamp and Bias supporting AC-coupling
 - Video outputs including:
  - Four outputs as CVBS, R/C, G, and B to connect to VCR
  - A output as CVBS to connect to TV
  - Wide-band 6dB output buffer amp to drive 3Vpp into 75W, supporting
    DC-coupling
 - Input signal monitor and automatic start-up and sleep action
 - Hi video performance:
   SNR: 74dB(typ.), Cross talk: -50dB(typ.)
 - Slow/Fast Blanking Control based on the IEC933-1 requirement
 - Programmable functions by I²C supporting first operation mode
   (400KHz)
 - Power Supply: 5V +/- 5% and 12V +/- 5%
 - Package: Small 48 pin LQFP, Backward pin compatibility with AK4702

 - DVB-S/T/C Set-Top-Boxes
 - TVs
 - DVDs

 - VCRs

AKD4707