DESCRIPTION

The WM8781 is a high performance, low cost stereo audio ADC designed for recordable media applications.

The device offers stereo line level inputs along with two control input pins (FORMAT, IWL) to allow operation of the audio interface in three industry standard modes. An internal op-amp is integrated on the front end of the chip to accommodate analogue input signals greater than 1Vrms. The device also has a high pass filter to remove residual DC offsets.

FEATURES

• SNR 102dB (‘A’ weighted @ 48kHz)

• THD -90dB (at –1dB)

• Sampling Frequency: 8 – 192kHz

• Master or Slave Clocking Mode

• System Clock (MCLK): 128fs, 192fs, 256fs, 384fs, 512fs, 768fs

• Audio Data Interface Modes

- 16-24 bit I2S, 16-24 bit Left, 16-24 bit Right Justified

• Supply Voltages

- Analogue 2.7 to 5.5V

- Digital core: 2.7V to 3.6V

• 20-lead SSOP package

APPLICATIONS

• Recordable DVD Players

• Personal Video Recorders

• STB

• Studio Audio Processing Equipment