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LMV1031-20 - Amplifier

General Description

The LMV1031 audio amplifier is an ideal replacement for the JFET preamplifier that is currently used in the electret microphones.

The LMV1031 is optimized for applications that require extended battery life, such as Bluetooth communication links.

The supply current for the LMV1031 is only 72 µA.

Key Features

  • (Typical LMV1031-20, 2V Supply; Unless Otherwise Noted) n Signal to noise ratio 62 dB n Output voltage noise (A-weighted).
  • 86 dBV n Low supply current 72 µA n Supply voltage 2V to 5V > 100 MΩ n Input impedance n Max input signal 108 mVPP n Output voltage 1.09V n Temperature range.
  • 40˚C to 85˚C n Large Dome 4-Bump micro SMD package with improved adhesion technology.

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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LMV1032-06 Amplifiers for 3 Wire Analog Electret Microphones
LMV1032-15 Amplifiers
LMV1032-25 Amplifiers
LMV101 Fixed-Gain Amplifiers
LMV1012 Pre-Amplified ICs for High Gain 2-Wire Microphones
LMV1015 Built-in Gain IC
LMV102 Fixed-Gain Amplifiers
LMV1022 PDM Output Pre-Amplifier
LMV1023 PDM Output Pre-Amplifier
LMV1024 (LMV1024 / LMV1026) PDM Output

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.

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LMV1031-20 Amplifiers for Internal 3-Wire Analog Microphones and External Preamplifier October 2005 LMV1031-20 Amplifier for Internal 3-Wire Analog Microphones and External Preamplifier General Description The LMV1031 audio amplifier is an ideal replacement for the JFET preamplifier that is currently used in the electret microphones. The LMV1031 is optimized for applications that require extended battery life, such as Bluetooth communication links. The supply current for the LMV1031 is only 72 µA. www.DataSheet4U.com This is a dramatic reduction from that required for a JFET equipped microphone. The LMV1031, with its separate output and supply pins, offers a higher PSRR and eliminates the need for additional external components.