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WM8940

Part Number	WM8940
Manufacturer	Cirrus Logic
Description	Mono CODEC
Published	Apr 3, 2024
Detailed Description	WM8940 Mono CODEC with Speaker Driver DESCRIPTION The WM8940 is a low power, high quality mono CODEC designed for port...
Datasheet	WM8940 PDF File

Overview

WM8940 Mono CODEC with Speaker Driver DESCRIPTION The WM8940 is a low power, high quality mono CODEC designed for portable applications such as digital still cameras or camcorders.
The device integrates support for a differential or single ended mic, and includes drivers for speakers or headphone, and mono line output.
External component requirements are reduced as no separate microphone or headphone amplifiers are required.
Advanced Sigma Delta Converters are used along with digital decimation and interpolation filters to give high quality audio at sample rates from 8 to 48ks/s.
A selectable high pass filter and four fully-programmable notch filters are available in the ADC path.
An advanced mixed signal ALC function with noise gate is provided, while readback of PGA gain during ALC operation is supported.
The digital audio interface supports A-law and law companding.
An on-chip PLL is provided to generate the required Master Clock from an external reference clock.
The PLL clock ca...

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