LMV1031-20 Datasheet - National Semiconductor

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LMV1031-20 Amplifier

LMV1031-20 Amplifiers for Internal 3-Wire Analog Microphones and External Preamplifier October 2005 LMV1031-20 Amplifier for Internal 3-Wire Analog .
The LMV1031 audio amplifier is an ideal replacement for the JFET preamplifier that is currently used in the electret microphones.

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Datasheet Details

Part number:

LMV1031-20

Manufacturer:

National Semiconductor

File Size:

726.27 KB

Description:

Amplifier

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

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

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