National Semiconductor - LMV1032-06 LMV1032-15 LMV1032-25 Amplifiers for 3 Wire Analog Electret Microphones Data Manual
Summary
The LMV1032 series is a specialized, low-noise audio amplifier designed for 3-wire analog electret microphones. It functions as a powerful preamp, offering improved Signal-to-Noise Ratio and extremely low supply current draw compared to older models. This design makes it ideal for battery-operated devices requiring extended operational life. The accompanying manual provides comprehensive electrical specifications for fixed gains (6 dB, 15 dB, or 25 dB) across 1.7V to 5V supplies. These ultra-compact amplifiers are perfect for miniature microphone applications in portable electronics such as mobile communication devices, cellular phones, and automotive accessories.
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February
LM 1032-06/LM 1032-15/LM 1032-25 plifiers for ire nalog lectret icrophones
LMV1032-06/LMV1032-15/LMV1032-25 Amplifiers for Wire Analog Electret Microphones General Description Features The LMV1032 is an audio amplifier series for small form (Typical LMV1032-06, 1.7V Supply; Unless Otherwise factor electret microphones. It is designed to replace the Noted) JFET preamp currently being used. The LMV1032 series is Output voltage noise (A-weighted) −97 d BV ideal for extended battery life applications, such as blue-
Low supply current µA
tooth communication link. The addition of third pin in
Supply voltage 1.7V to 5V
electret microphones that incorporate the LMV1032 allows
PSRR d B
for dramatic reduction in supply current as compared to the
Signal to noise ratio d B
JFET equipped electret microphone. Microphone supply cur-
Input capacitance p F
rent is thus reduced to µA, assuring longer battery life.
Input impedance >100 MΩ
The LMV1032 series is guaranteed for supply voltages from
1.7V to 5V, and has fixed voltage gains of d B, d B and Output impedance <200Ω
d B. Max input signal m VPP
The LMV1032 series offers low output impedance over the Temperature range −40˚C to 85˚C
voice bandwidth, excellent power supply rejection (PSRR), Offered in 1.13 1.13 0.4mm Ultra Thin micro SMD and stability over temperature. lead free (NOPB) package The devices are offered in space saving 4-bump ultra thin micro SMD (TM) lead free package and are thus ideally Applications suited for the form factor of miniature electret microphone
Mobile communications Bluetooth
packages.
Automotive accessories Cellular phones PDAs Accessory microphone products
Block Diagram Electret Microphone
National Semiconductor Corporation DS200842 www.national.com
Page Summary Contents For National Semiconductor - LMV1032-06 LMV1032-15 LMV1032-25 Amplifiers for 3 Wire Analog Electret Microphones Data Manual
Manual Details
| Brand | National |
|---|---|
| Pages | 11 |
| File Size | 406.30 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What are the ideal applications for the LMV1032 series?
They are suited for mobile communications, automotive accessories, cellular phones, PDAs, and accessory microphone products.
What is the safe operating temperature range?
The recommended operating temperature range for this device is -40˚C to +85˚C.
How does the LMV1032 series improve battery life compared to standard JFET preamps?
It significantly reduces supply current to 60 µA while offering excellent Power Supply Rejection Ratio (PSRR) and maintaining low signal-to-noise ratio.
What is the guaranteed voltage requirement for operation?
The amplifiers are designed for a supply voltage range of 1.7V to 5V.