WM8952ECS/RV

Overview

The WM8952ECS/RV is a low-power, high-quality mono Analog-to-Digital Converter (ADC) designed for portable applications. It integrates a microphone pre-amplifier, eliminating the need for external amplification. The device supports audio sample rates from 8 kHz to 48 kHz and features an ADC Signal-to-Noise Ratio (SNR) of 94 dB with Total Harmonic Distortion (THD) of -80 dB at 8–48 ks/s. It operates on supply voltages ranging from 2.5 V to 3.6 V, with digital supplies capable of running down to 1.71 V. The component is housed in a compact 28-ball W-CSP package measuring 2.59 × 2.5 × 0.7 mm.

Feature Summary

• Integrated Mono ADC with programmable gain amplifier supporting differential or single-ended microphone connections.
• Advanced Sigma Delta converter design delivering 94 dB SNR and -80 dB THD across 8–48 kHz sample rates.
• On-chip PLL for master clock generation and support for A-law/μ-law companding digital interfaces.
• Programmable digital filters including high-pass filter for wind noise reduction and four notch filters for narrowband noise suppression.

Applications

• Headsets
• Wireless microphones
• General purpose mono audio ADC

Procurement Notes

Verify the ordering suffix ECS/RV corresponds to the 28-ball W-CSP package with tape and reel packaging. Confirm the moisture sensitivity level (MSL3) and reflow temperature limits (260°C) align with assembly capabilities. Ensure the operating temperature range (-25°C to +85°C) meets environmental requirements.

Selection Notes

Select this component when a mono ADC with integrated microphone bias and pre-amplification is required. Verify that the system requires sample rates between 8 kHz and 48 kHz. Check if the available control interfaces (2-wire or 3-wire serial) match the host controller's capabilities. Ensure power supply constraints allow for AVDD of 2.5–3.6 V and digital supplies down to 1.71 V.

Part Context

The WM8952 is manufactured by Wolfson Microelectronics plc, which was acquired by Cirrus Logic. This specific part number represents the lead-free version in a tape and reel configuration. It serves as a specialized mono ADC solution, distinct from stereo CODECs, focusing on high-fidelity input capture for voice and audio applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Cross-reference pinouts and electrical characteristics carefully if considering alternative mono ADCs from other manufacturers.