DESCRIPTION

The WM8720 is a high performance stereo DAC designed for audio applications such as CD, DVD, home theatre systems, set top boxes and digital TV. The WM8720 supports data input word lengths from 16 to 24-bits and sampling rates up to 96kHz. The WM8720 consists of a serial interface port, digital interpolation filter, multi-bit sigma delta modulator and stereo DAC in a small 20-pin SSOP package. The WM8720 also includes a digitally controllable mute and attenuator function on each channel.

FEATURES

• Performance:

- 102dB SNR (‘A’ weighted @48kHz),

- THD: -95dB @ 0dB FS

• 5V or 3.3V supply operation

• Sampling frequency: 8kHz to 96kHz

• Input data word: 16 to 24-bit

• Hardware or SPI compatible serial port control modes:

- Hardware mode: system clock, reset, mute, de-emphasis

- Serial control mode: mute, de-emphasis, digital attenuation (256 steps), zero mute, phase reversal, power down

APPLICATIONS

• CD, DVD audio

• Home theatre systems

• Set top boxes

• Digital TV