WM1824BGEDT

Overview

The WM1824BGEDT is a stereo digital-to-analog converter (DAC) featuring an integral charge pump for generating 2Vrms ground-referenced line outputs from a single 3.3V supply. It supports sampling rates from 8kHz to 192kHz with a 24-bit resolution and I2S interface in slave mode. Key electrical specifications include a signal-to-noise ratio of 106dB (A-weighted), dynamic range of 104dB, and total harmonic distortion of -87dB at -1dBFS. The device operates within a voltage range of 2.97V to 3.63V for analog supplies and includes hardware mute control.

Feature Summary

• High-performance stereo DAC with integrated charge pump delivering 2Vrms ground-referenced line outputs
• Audio performance metrics: 106dB SNR (A-weighted), 104dB dynamic range, and -87dB THD at -1dBFS
• Supports I2S audio data format with sample rates from 8kHz to 192kHz using common MCLK ratios
• Hardware control interface with MUTE pin functionality and pop/click suppressed power sequencing

Applications

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

Procurement Notes

Verify the specific ordering suffix 'GEDT' corresponds to the lead-free, tube-packaged variant in the 16-lead TSSOP package. Confirm that the moisture sensitivity level is MSL1 and the peak soldering temperature rating is 260°C. Ensure the supplier documentation matches the Wolfson Microelectronics plc production data revision 4.0 or later to guarantee accurate electrical characteristics.

Selection Notes

Select this component when a single 3.3V supply system requires high-fidelity stereo output without external coupling capacitors due to the DC servo feature. It is suitable for designs needing a simple hardware control interface rather than complex digital configuration. Ensure the load impedance remains above 100Ω to prevent protective shutdown of the internal charge pump.

Part Context

The WM1824B series was originally developed by Wolfson Microelectronics plc before being acquired by Cirrus Logic. The part number WM1824BGEDT specifically denotes the lead-free version in a 16-lead TSSOP package. This component belongs to a family of high-performance audio DACs designed for consumer electronics requiring ground-referenced outputs.

Replacement Considerations

WM1824BGEDT/R is the tape and reel equivalent of the same device. Other models in the series such as WM1824CGEFL share similar functional descriptions but may differ in package type or specific manufacturing revisions.