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LMV1023 - PDM Output Pre-Amplifier

Download the LMV1023 datasheet PDF. This datasheet also covers the LMV1022 variant, as both devices belong to the same pdm output pre-amplifier family and are provided as variant models within a single manufacturer datasheet.

General Description

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.

Key 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.
  • Adhesion technology >1kg.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LMV1022-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LMV1024 PDM Output with Pre-Amplifier Texas Instruments
LMV1026 PDM Output with Pre-Amplifier Texas Instruments
LMV1012 LMV1012 Analog Series: Pre-Amplified IC for High Gain 2-Wire Microphones (Rev. H) ETCTI
LMV1015 LMV1015 Analog Series: Built-in Gain IC for High Sensitivity 2-Wire Microphone (Rev. B) ETCTI
LMV1031 LMV1031-20 Amp for Internal 3-Wire Analog Microphones External Preamp (Rev. B) ETCTI

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LMV102 Fixed-Gain Amplifiers
LMV1022 PDM Output Pre-Amplifier
LMV1024 (LMV1024 / LMV1026) PDM Output
LMV1026 (LMV1024 / LMV1026) PDM Output
LMV101 Fixed-Gain Amplifiers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LMV1022/LMV1023 PDM Output Preamp for Electret Microphones LMV1022/LMV1023 OBSOLETE July 8, 2011 PDM Output Pre-Amplifier for Electret Microphones General Description 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 Semiconductor’s Powerwise™ family of products, the LMV1022/LMV1023 consume 900µW of power during operation, offering significant power savings over an analog microphone with an external ADC. The LMV1022 outputs its data on the rising clock edge. The LMV1023 outputs its data on the falling clock edge.