DESCRIPTION

The WM8741 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 WM8741 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

− 128dB SNR (‘A’-weighted mono @ 48kHz)

− 125dB SNR (‘A’-weighted stereo @ 48kHz)

− 123dB 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

• 4.5V to 5.5V analogue, 3.0V to 3.6V digital supply operation

• 28-lead SSOP Package

APPLICATIONS

• Professional audio systems

• CD, DVD, SACD audio

• Home theatre systems

• A/V receivers