WM8940KGEFL/V

Overview

The WM8940KGEFL/V is a mono audio CODEC designed for portable applications. It integrates a high-quality DAC and ADC with an on-chip speaker driver, eliminating the need for external amplifiers. The device supports sample rates from 8 to 48 kHz with 24-bit resolution. Key electrical parameters include a DAC SNR of 98 dB and an ADC SNR of 94 dB. It operates on analogue supplies of 2.5 V to 3.6 V and digital supplies down to 1.71 V. The component is housed in a 24-lead QFN package measuring 4x4 mm.

Feature Summary

• Integrates a mono CODEC with a built-in speaker driver capable of BTL output.
• Includes programmable microphone preamplifiers with ALC and noise gate functions.
• Features advanced digital filtering including notch filters and wind noise reduction.
• Supports multiple control interfaces and includes an on-chip PLL for clock generation.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'K' against manufacturer documentation, as it may indicate association with specific product change notifications. Confirm availability status directly with authorized distributors, as end-of-life or limited supply conditions may apply to this variant.

Selection Notes

Select this component for designs requiring a compact mono audio solution with integrated power driving capabilities. Ensure the system architecture accommodates the specified voltage ranges for analogue and digital domains. Verify that the required audio interface protocols align with the supported serial modes.

Part Context

This part belongs to the Cirrus Logic WM8940 series of low-power audio CODECs. It is functionally similar to the standard WM8940CGEFL/V but carries a distinct ordering suffix. The series targets battery-operated devices where board space and power efficiency are critical constraints.

Replacement Considerations

The WM8940CGEFL/V is a direct pin-compatible alternative within the same family. Verify if the 'K' suffix denotes a specific revision or manufacturing lot associated with PCN-2020-141 before substituting.