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WM8904

Part Number	WM8904
Manufacturer	Cirrus Logic
Description	Ultra Low-Power Codec
Published	Feb 25, 2019
Detailed Description	WM8904 Ultra Low-Power Codec for Portable Audio Applications DESCRIPTION The WM8904 is a high performance ultra-low po...
Datasheet	WM8904 PDF File

Overview

WM8904 Ultra Low-Power Codec for Portable Audio Applications DESCRIPTION The WM8904 is a high performance ultra-low power stereo CODEC optimised for portable audio applications.
The device features stereo ground-referenced headphone amplifiers using the Wolfson ‘Class-W’ amplifier techniques incorporating an innovative dual-mode charge pump architecture - to optimise efficiency and power consumption during playback.
The ground-referenced headphone and line outputs eliminate AC coupling capacitors, and both outputs include common mode feedback paths to reject ground noise.
Control sequences for audio path setup can be pre-loaded and executed by an integrated control write sequencer to reduce software driver development and minimise pops and clicks via SilentSwitch™ technology.
The analogue input stage can be configured for single ended or differential inputs.
Up to 3 stereo microphone or line inputs may be connected.
The input impedance is constant with PGA gain setting.
A stereo digi...

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