GENERAL DESCRIPTION

The AK4707 offers the ideal features for digital set-top-box systems. The AK4707 includes the audio switches, video switches, etc. designed primarily for digital set-top-box systems. The AK4707 is offered in a space saving 48-pin LQFP package.

FEATURES

†Analog switches for SCART

Audio section

THD+N: −86dB (@2Vrms)

Dynamic Range: 96dB (@2Vrms)

Analog Inputs

Two Full Differential Stereo Input or Single-ended input for Decoder DAC

Two Stereo Input (TV & VCR SCART)

Analog Outputs

Two Stereo Outputs (TV & VCR SCART)

Pop Noise Free Circuit for Power on/off

Video section

75ohm driver

6dB Gain for Outputs

Four CVBS/Y inputs (ENCx2, TV, VCR), Two CVBS/Y outputs (TV, VCR)

Three R/C inputs (ENCx2, VCR), One R/C output (TV)

Two G and B inputs (ENC, VCR), One G and B outputs (TV)

TV/VCR input monitor

Loop-through Mode for standby

Auto-Startup Mode for power saving

SCART pin#16 (Fast Blanking), pin#8 (Slow Blanking) Control

†Power supply

5V+/−5 and 12V+/−5

Low Power Dissipation / Low Power Standby Mode

†Package

Small 48pin LQFP

†AK4702 Pin Compatible