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. 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.
The LMV1031 is guaranteed to operate from 2V to 5V supply voltage over the full temperature range, has a fixed voltage gain of 20 dB and enhanced SNR performance. The LMV1031 is optimized for an output biasing of 1.
| LMV1031 | |
| Interface | 3-wire |
| Special Features | 1V center bias |
| Amp Gain (dB) | 20 |
| Quiescent Current (+/-) (Typ) (mA) | 0.072 |
| Vmin (V) | 2 |
| Pin/Package | 4DSBGA |
| Vmax (V) | 5 |
| Approx. Price (US$) | 0.51 | 1ku |
