LMV1022 Datasheet (National Semiconductor)

LMV1022, PDM Output Pre-Amplifier

The LMV1022 and LMV1023 integrate a pre-amplifier and ADC that can be mounted inside an electret condenser microphone (ECM).

The digital output signal is a pulse density modulation (PDM) bitstream that alows the microphone to connect directly to the DSP or baseband processor.

Part of National Semico

LMV1022 Features

* Integrated 21 dB Pre-Amp and ADC for significant power and space savings

* Integrated high-pass Filter to reduce 'Plop Noise'

* Excellent RF immunity (e.g. buzz noise)

* LMV1022 and LMV1023 combine to create 4-wire Stereo Solution

* Very thin 0.35mm micro SMD packaging

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