WM2002GEFL

Overview

The WM2002GEFL is a stereo headphone driver featuring Wolfson Ambient Noise Cancellation (ANC). It supports analogue playback and voice input with up to 10 analogue microphones for noise cancellation. The device integrates power management including a DC-DC converter, charge pump, and LDO regulators, enabling operation from a single AAA battery. System clocking uses an internal crystal oscillator or external clock. Configuration is stored in non-volatile OTP memory or accessed via a 2-wire serial interface. It provides 45mW per channel into 16Ω and -82dB THD+N for differential drive.

Feature Summary

• Wolfson ANC engine providing ambient noise reduction
• Integrated power management with DC-DC boost and charge pump
• Supports multiple analogue microphone inputs for noise cancellation
• Configurable via integrated non-volatile OTP memory

Applications

• Pod-style stereo ear-buds with ANC
• Supra-Aural stereo headphones with ANC
• Mono/Stereo Bluetooth headsets with ANC

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation. The GEFL/V variant denotes a lead-free 48-pin QFN package with MSL3 moisture sensitivity. Confirm that the required OTP configuration matches your acoustic design, as coefficients are programmed during production calibration. Ensure supply voltage ranges align with your system architecture before procurement.

Selection Notes

Select this component for applications requiring integrated noise cancellation and power management in a compact form factor. Consider the 48-pin QFN package dimensions for PCB layout constraints. Verify compatibility with your chosen microphone pre-amplification stage. Evaluate whether the internal crystal oscillator meets your timing requirements or if an external clock source is necessary.

Part Context

The WM2002 belongs to Wolfson Microelectronics' audio driver portfolio, specifically designed for portable audio devices. It combines high-quality stereo headphone driving capabilities with advanced digital signal processing for noise cancellation. The device targets consumer electronics where space and power efficiency are critical design parameters.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.