DESCRIPTION

The WM8728 is a high performance stereo DAC designed for audio applications such as DVD, home theatre systems, and digital TV. The WM8728 supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8728 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a small 20-pin SSOP package. The WM8728 also includes a digitally controllable mute and attenuate function for each channel.

FEATURES

• Stereo DAC with 24 bit PCM

• Audio Performance

- 106dB SNR (‘A’ weighted @ 48kHz) DAC

- -97dB THD

• DAC Sampling Frequency: 8kHz - 192kHz

• 2 or 3-Wire Serial Control Interface or Hardware Control

• Programmable Audio Data Interface Modes

- I2S, Left, Right Justified, DSP

- 16/20/24/32 bit Word Lengths

• Independent Digital Volume Control on Each Channel with 127.5dB Range in 0.5dB Steps

• 3.0V - 5.5V Supply Operation

• 20-pin SSOP Package

• Exceeds Dolby Class A Performance Requirements

APPLICATIONS

• DVD-Audio and DVD ‘Universal’ Players

• Home theatre systems

• Digital TV

• Digital broadcast receivers