WM8940CGEFL/V

Overview

The WM8940CGEFL/V is a mono audio CODEC with an integrated speaker driver, designed for portable applications. It features a 24-bit resolution and supports sample rates from 8 to 48 kHz. The device includes one ADC and one DAC, operating within a supply voltage range of 1.71 V to 3.6 V for digital sections and 2.5 V to 3.6 V for analogue sections. It utilizes a 2-Wire or 3-Wire serial interface and operates between -25°C and +85°C. Key performance metrics include a DAC SNR of 98 dB and an ADC SNR of 94 dB.

Feature Summary

• Integrates a high-quality mono CODEC with an on-chip BTL speaker driver capable of delivering up to 0.4 W into an 8 Ω load.
• Supports flexible microphone inputs with programmable gain amplifiers and mixed-signal automatic level control (ALC) with noise gating.
• Includes advanced digital filtering capabilities such as a programmable high-pass filter for wind noise reduction and four fully-programmable notch filters.

Applications

• Digital still cameras
• Camcorders
• General purpose mono audio systems

Procurement Notes

Verify the specific ordering suffix 'V' against the manufacturer's documentation to confirm tape and reel packaging requirements. Ensure that the moisture sensitivity level (MSL3) and reflow soldering temperature limits are strictly adhered to during assembly processes. Cross-reference the component marking with the official datasheet to prevent counterfeit parts.

Selection Notes

Select this component when a low-power mono audio solution with integrated output drivers is required. It is suitable for designs needing differential or single-ended microphone interfaces without external preamplifiers. Consider the available digital filtering options if narrowband noise suppression or wind noise reduction is necessary for the target application environment.

Part Context

This part belongs to the WM8940 series produced by Cirrus Logic (formerly Wolfson Microelectronics). It is specifically the lead-free version packaged in a 24-lead QFN format. The series is targeted at portable multimedia devices requiring compact footprints and efficient power management for battery-operated equipment.

Replacement Considerations

The WM8940CGEFL/RV is a confirmed substitute offering identical electrical characteristics but supplied in tape and reel packaging instead of cut tape. Verify pin compatibility and register map consistency before implementation.