DESCRIPTION

The WM8772 is a multi-channel audio codec ideal for DVD and surround sound processing applications for home hi-fi, automotive and other audio visual equipment.

A stereo 24-bit multi-bit sigma delta ADC is used. Digital audio output word lengths from 16-32 bits and sampling rates from 32kHz to 96kHz are supported. The 32-lead version allows separate ADC and DAC samples rates.

FEATURES

• Audio Performance

− 103dB SNR (‘A’ weighted @ 48kHz) DAC

− 100dB SNR (‘A’ weighted @ 48kHz) ADC (TQFP)

• DAC Sampling Frequency: 8kHz – 192kHz

• ADC Sampling Frequency: 32kHz – 96kHz

• ADC and DAC can run at different sample rates (32 pin TQFP version only)

• 3-Wire SPI Serial or Hardware Control Interface

• Programmable Audio Data Interface Modes

− I2S, Left, Right Justified or DSP

− 16/20/24/32 bit Word Lengths

• Three Independent stereo DAC outputs with independent digital volume controls

• Master or Slave Audio Data Interface

• 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation

• 28 pin SSOP or 32 pin TQFP Package

APPLICATIONS

• DVD Players

• Surround Sound AV Processors and Hi-Fi systems

• Automotive Audio