WM8524CGEDT

Overview

The WM8524CGEDT is a stereo digital-to-analog converter (DAC) featuring an integral charge pump and hardware control interface. It delivers 2Vrms ground-referenced line driver outputs using a single 3.3V power supply rail. The device incorporates a DC servo to eliminate coupling capacitors and suppress power-on pops. It supports audio sampling rates from 8kHz to 192kHz with a slave-mode digital audio interface compatible with Left Justified, Right Justified, and I2S formats. Key electrical specifications include a 106dB A-weighted SNR, -89dB THD at -1dBFS, and a maximum 1mV DC offset on line outputs.

Feature Summary

• High-performance stereo DAC with integrated charge pump for single-supply operation
• Audio performance: 106dB SNR (A-weighted), -89dB THD, and 120dB mute attenuation
• Hardware control interface supporting LJ, RJ, and I2S data formats in slave mode
• DC servo eliminates external coupling capacitors and minimizes DC transients

Applications

• Games Consoles
• Set Top Box
• A/V Receivers
• DVD Players
• Digital TV

Procurement Notes

Verify the specific ordering suffix when sourcing components. The suffix 'CGEDT' denotes the lead-free 16-lead TSSOP package without tape and reel packaging. The suffix 'CGEDT/R' indicates the same component supplied in tape and reel format with a quantity of 2000 units per reel. Confirm the exact suffix required for your assembly process to ensure correct packaging type.

Selection Notes

Select this component for applications requiring a simple hardware-controlled stereo DAC with high output voltage swing from a single 3.3V supply. Ensure the host system provides a master clock within the supported MCLK to LRCLK ratios (128fs to 1152fs). Verify that the digital interface logic levels are compatible with the 3.3V tolerant inputs. Consider the 16-lead TSSOP package dimensions if board space is constrained.

Part Context

The WM8524CGEDT belongs to the WM8524 series manufactured by Wolfson Microelectronics plc, which was acquired by Cirrus Logic. This component is designed as a cost-effective solution for consumer digital audio applications needing ground-referenced line outputs. It replaces older designs requiring dual supplies or complex external mute circuits by integrating the necessary charge pump and DC servo functions on-chip.

Replacement Considerations

The datasheet lists similar parts such as the AK4340 and AK4420 from Asahi Kasei Microsystems, which offer comparable 24-bit 192kHz stereo DAC capabilities with 2Vrms outputs. These alternatives may serve as functional substitutes but require verification of pin compatibility and interface differences.