DESCRIPTION

The WM8718 is a high performance differential stereo DAC designed for audio applications such as DVD, home theatre systems and digital TV. The WM8718 supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8718 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and differential stereo DAC in a small 20-lead SSOP package or 24-lead QFN package. The WM8718 includes a digitally controllable mute, an attenuate function and zero flag output for each channel.

The 3-wire serial control port provides access to a wide range of features including on-chip mute, attenuation and phase reversal.

FEATURES

• 24 bit Stereo DAC

• Fully Differential Voltage Outputs

• Audio Performance

   - 111dB SNR (‘A’ weighted @ 48kHz) DAC

   - -100dB THD

• DAC Sampling Frequency: 8kHz - 192kHz

• 3 Wire Serial Control Interface

• 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

• Independent Zero Flag Outputs

• 3.0V - 5.5V Supply Operation

• 20-lead SSOP Package or 24-lead QFN Package

APPLICATIONS

• CD, DVD, and DVD-Audio Players

• Home theatre systems

• Professional mixing desks