WM8741GEDS/RV

Overview

The WM8741GEDS/RV is a high-performance stereo digital-to-analogue converter (DAC) from Cirrus Logic, housed in a 28-lead SSOP package. It supports PCM data word lengths of 16 to 32 bits and sampling rates up to 192 kHz, alongside DSD bit-stream formats for SACD applications. The device operates on separate analogue and digital supplies ranging from 4.5 V to 5.5 V and 3.15 V to 3.6 V, respectively. Key electrical specifications include a typical SNR of 125 dB (A-weighted stereo at 48 kHz), -100 dB THD, and 130 dB channel separation.

Feature Summary

• Advanced multi-bit sigma-delta architecture with selectable digital filters including minimum phase and non-half band responses.
• Supports both PCM and DSD audio input formats, including Direct and PCM-converted DSD modes.
• Features fine resolution volume control, soft mute, anti-clipping mode, and digital de-emphasis.
• Pin-compatible with the WM8740 and offers hardware or software control interfaces.

Applications

• Professional recording systems
• High specification CD, DVD, and SACD players
• Home theatre systems
• A/V receivers

Procurement Notes

Verify component authenticity through authorized distributors as the part may be subject to discontinuation notices. Confirm that the ordering suffix RV indicates tape and reel packaging with a standard quantity of 2,000 units per reel. Ensure supply voltage requirements match system design constraints before procurement.

Selection Notes

Select this component for applications requiring ultra-high linearity and low jitter tolerance. The WM8741 is suitable where advanced digital filter characteristics are needed to minimize pre-ringing and group delay. Verify compatibility with existing digital audio interface protocols such as I2S, DSP, or Left/Right Justified formats.

Part Context

The WM8741 belongs to Cirrus Logic's MasterHIFI series of high-end audio DACs. It serves as a direct pin-compatible replacement for the WM8740, allowing for straightforward upgrades in existing designs without PCB layout modifications. The device utilizes a CMOS process and is designed for professional audio environments demanding high dynamic range.

Replacement Considerations

The WM8740 is confirmed as a pin-compatible alternative within the same product family. When substituting, verify that the specific digital filter configurations required by the application are supported in hardware control mode if software control is unavailable.

FAQ

Does the WM8741 support DSD audio formats?

Yes, the device supports DSD bit-stream data in both direct DSD and PCM-converted DSD modes for SACD applications.

What is the maximum sampling rate supported by the WM8741?

The WM8741 supports PCM sampling rates up to 192 kHz and DSD sampling rates corresponding to standard SACD speeds.

How does the WM8741 handle clock jitter?

The architecture provides high tolerance to clock jitter, optimizing DAC linearity and minimizing sensitivity to timing variations in the master clock input.