The LMV1031-20 is an amplifier for internal 3-wire analog microphones and external preamplifiers.
The LMV1031-20 is an audio amplifier optimized for applications requiring extended battery life, such as Bluetooth communication links and cellular phones. It serves as an ideal replacement for JFET preamplifiers in electret microphones, offering a fixed voltage gain of 20 dB and a very low supply current of 72 pA. The device operates from a supply voltage of 2V to 5V over a temperature range of -40°C to +85°C.
| Supply Current | 72 pA |
|---|---|
| Supply Voltage | 2V to 5V |
| Fixed Voltage Gain | 20 dB |
| Signal to Noise Ratio | 62 dB |
| Output Voltage Noise | -86 dBV |
| Temperature Range | -40°C to 85°C |
| Output Impedance | <200 Ω |
| Input Impedance | >100 MΩ |
The supply current for the LMV1031 is only 72 pA.
The device is guaranteed to operate from 2V to 5V supply voltage.
The LMV1031 has a fixed voltage gain of 20 dB.
It is optimized for mobile communications like Bluetooth, accessory microphone products, cellular phones, and PDAs.