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LMV1031-20 - Amplifier

Datasheet Summary

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.

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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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.
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