GENERAL DESCRIPTION
The AK4712 is a High Definition A/V cap-less line driver. The AK4712 integrates the audio line driver, SD/HD video filters and video drivers. Its A/V outputs are Ground-referenced and eliminate the need for large A/V DC-blocking capacitors with a built-in Charge-pump circuit. The AK4712 achieves excellent A/V performance by single 3.3V power supply. The AK4712 is ideal for a wide range of consumer HD applications, such as portable A/V players, set-top boxes, and Blu-ray/DVD player systems. The AK4712 is offered in a space saving 28pin QFN package.
FEATURES
Audio section
â¡ THD+N: â102dB (@2Vrms)
â¡ Dynamic Range: 108dB (@2Vrms, A-weighted)
â¡ Full Differential (or Single-ended) input for Decoder DAC
â¡ Stereo Output for CINCH (2Vrms)
â¡ Ground-Referenced Output Eliminates
DC-Blocking Capacitor and Mute Circuit
Video section
â¡ Integrated LPF
SD: â40dB@27MHz
HD: â36dB@74.25MHz ,â40dB@54MHz or 27MHz selectable
â¡ 6dB Gain for Outputs
â¡ 4ch 75ohm driver
3ch for HD: Y/Pb/Pr
1ch for CINCH: CVBS
Power supply
â¡ 3.3V+/â5%
â¡ Low Power Standby Mode
Package
â¡ 28pin QFN (0.4mm pitch)
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