DESCRIPTION

The WM8742 is a very high performance stereo DAC designed for audio applications such as professional recording systems, A/V receivers and high specification CD, DVD and home theatre systems. The device supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8742 also supports DSD bit-stream data format, in both direct DSD and PCM-converted DSD modes.

FEATURES

? Advanced Ultra High Performance Multi-bit Sigma-Delta Architecture

??? - 126dB SNR (‘A’-weighted mono @ 48kHz)

??? - 123dB SNR (‘A’-weighted stereo @ 48kHz)

??? - 121dB SNR (non-weighted stereo @ 48kHz)

??? - -100dB THD @ 48kHz

??? - Differential analogue voltage outputs

??? - High tolerance to clock jitter

? PCM Mode

??? - Sampling frequency: 32kHz to 192kHz

??? - Input data word length support: 16 to 32-bit

??? - Supports all standard audio interface formats

??? - Selectable advanced digital filter responses

??????? - Includes linear/minimum phase and range of tailored characteristics

??????? - Enables low pre-ringing, minimal latency

??? - Optional interface to industry standard external filters

??? - Digital volume control in 0.125dB steps with soft ramp and soft mute

??? - Anti-clipping mode to prevent distortion even with input signals recorded up to 0dB

??? - Selectable de-emphasis support

??? - Zero Flag output

? DSD Mode

??? - DSD bit-stream support for SACD applications

??? - Support for normal or phase modulated bit-streams

??? - Direct or PCM converted DSD paths (DSD Plus)

??? - DSD mute

? Hardware or software control modes:

??? - 2 and 3 wire serial control interface support

? Pin compatible with WM8740 and WM8741

? 4.5V to 5.5V analogue, 3.15V to 3.6V digital supply operation

? 28-lead SSOP Package

APPLICATIONS

? Professional audio systems

? CD, DVD, SACD audio

? Home theatre systems

? A/V receivers