Cirrus Logic, Inc. 192 kHz D/A Converter with Internal Filter WM8740

The WM8740 is a stereo digital/analog converter (DAC) that supports a SPI-compatible serial control interface to support on-chip mute, attenuation and phase reversal, as well as a hardware controllable interface. This device accepts data input from 16 to 24-bits and sampling rates up to 192 kHz. The WM8716 also includes a digitally controllable mute and attenuator function on each channel. An internal digital filter has two selectable roll-off characteristics. A sharp or slow roll-off can be selected dependent on application requirements, or it can be bypassed and an external digital filter used instead. Features Selectable digital low pass filter Optional interface to industry standard external filters Hardware or three wire SPI control Fully differential voltage outputs