LMV1031UR-20/NOPB
ActiveANALOG INPUT MICROPHONE PREAMPLIFIER FOR 3-WIRE ELECTRET MICROPHONES WITH FIXED 20 DB GAIN
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LMV1031UR-20/NOPB
ActiveANALOG INPUT MICROPHONE PREAMPLIFIER FOR 3-WIRE ELECTRET MICROPHONES WITH FIXED 20 DB GAIN
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Technical Specifications
Parameters and characteristics for this part
| Specification | LMV1031UR-20/NOPB |
|---|---|
| Features | Microphone |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | 1-Channel (Mono) |
| Package / Case | DSBGA, 4-XFBGA |
| Supplier Device Package | 4-DSBGA |
| Type | Class AB |
| Voltage - Supply [Max] | 5 V |
| Voltage - Supply [Min] | 2 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.91 | |
| 10 | $ 1.71 | |||
| 25 | $ 1.62 | |||
| 100 | $ 1.38 | |||
| Digi-Reel® | 1 | $ 1.91 | ||
| 10 | $ 1.71 | |||
| 25 | $ 1.62 | |||
| 100 | $ 1.38 | |||
| Tape & Reel (TR) | 250 | $ 1.02 | ||
| 500 | $ 0.94 | |||
| 750 | $ 0.90 | |||
| 1250 | $ 0.85 | |||
| 1750 | $ 0.83 | |||
| 2500 | $ 0.80 | |||
| 6250 | $ 0.75 | |||
| 12500 | $ 0.71 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.82 | |
| 100 | $ 1.40 | |||
| 250 | $ 1.03 | |||
| 1000 | $ 0.74 | |||
Description
General part information
LMV1031 Series
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 ensured 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 1.09V.
The LMV1031 has less than 200Ω of output impedance over the full audio bandwidth. The gain response of the LMV1031 is flat within the audio band and is stable over the temperature range.
Documents
Technical documentation and resources