Analog Devices Inc. ADAV4622BSTZ

Description
The ADAV4622 is an advanced audio processor designed for TV applications. It includes a SIF demodulator and stereo decoder, a fully programmable 28bit audio processor, and multichannel digital baseband I/O. The audio processor can be programmed to implement a variety of audio algorithms, including matrix switching, automatic volume control, dynamic bass, and multiband equalization. It also includes an adjustable digital delay line for audio/video synchronization. The analog I/O integrates Analog Devices' proprietary continuoustime, multibit 2A architecture to provide high performance. The ADAV4622 operates from 3.3V (analog), 1.8 V (digital core), and 3.3 V (digital interface) and is available in an 80lead LQFP package.

Features
Sound IF (SIF) processor
SIF demodulator and broadcast stereo decoder
NICAM (BG, DK, I, L), A2 (BG, DK, M), BTSC (M, N), EIAJ (M)
Automatic sound IF standard detection
Fully programmable 28bit audio processor for enhanced ATV sound
Adjustable digital delay line for audio/video synchronization for up to 200 ms stereo delay
High performance 24bit ADC and DAC
94 dB DNR performance on DAC channels
95 dB DNR performance on ADC channels
Dual headphone outputs with integrated amplifiers
High performance pulsewidth modulation (PWM) digital outputs
Multichannel digital baseband I/O
4 stereo synchronous digital 'S input channels
One 6channel sample rate converter (SRC) and one stereo SRC supporting input sample rates from 5 kHz to 50 kHz
One stereo synchronous digital PPS output
S/PDIF output with S/PDIF input mux capability
Fast P°C control

Applications
Generalpurpose consumer audio postprocessing
Home audio
DVD recorders
Home theater in a box (HTIB) systems and DVD receivers
Audio processing subsystems for DTVready TVs
Analog broadcast capability for iDTVs