Datasheet > LMV1032-25

LMV1032-25

更新时间： 2024-11-18 04:19:59

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
12页	803K
描述
Amplifiers for 3-Wire Analog Electret Microphones

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LMV1032-25 数据手册

November 2005

LMV1032-06/LMV1032-15/LMV1032-25

Amplifiers for 3-Wire Analog Electret Microphones

General Description

Features

The LMV1032s are an audio amplifier series for small form

factor electret microphones. They are designed to replace

the JFET preamp currently being used. The LMV1032 series

is ideal for extended battery life applications, such as a

Bluetooth communication link. The addition of a third pin to

an electret microphones that incorporates an LMV1032 al-

lows for a dramatic reduction in supply current as compared

to the JFET equipped electret microphone. Microphone sup-

ply current is thus reduced to 60 µA, assuring longer battery

life. The LMV1032 series is guaranteed for supply voltages

from 1.7V to 5V, and has fixed voltage gains of 6 dB, 15 dB

and 25 dB.

(Typical LMV1032-15, 1.7V Supply; Unless Otherwise

Noted)

n Output voltage noise (A-weighted)

n Low supply current

n Supply voltage

−89 dBV

60 µA

1.7V to 5V

70 dB

n PSRR

n Signal to noise ratio

n Input capacitance

n Input impedance

n Output impedance

n Max input signal

n Temperature range

61 dB

2 pF

100 MΩ

200Ω

170 mV_PP

−40˚C to 85˚C

The LMV1032 series offers low output impedance over the

voice bandwidth, excellent power supply rejection (PSRR),

and stability over temperature.

n Large Dome 4-Bump micro SMD package with improved

adhesion technology.

The devices are offered in space saving 4-bump ultra thin

micro SMD (TM) lead free packages and are thus ideally

suited for the form factor of miniature electret microphone

packages. These extremely miniature packages have the

Large Dome Bump (LDB) technology. This micro SMD tech-

nology is designed for microphone PCBs requiring 1 kg

adhesion criteria.

Applications

n Mobile communications - Bluetooth

n Automotive accessories

n Cellular phones

n PDAs

n Accessory microphone products

Block Diagram

Electret Microphone

20084202

20084201

DS200842

www.national.com

12 3 4 5 6 7...12

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与LMV1032-25相关器件

型号	品牌	获取价格	描述	数据表
LMV1032UP-06	TI	获取价格	Amplifiers for 3-Wire Analog Electret Microphones
LMV1032UP-06	NSC	获取价格	Amplifiers for 3 Wire Analog Electret Microphones
LMV1032UP-15	NSC	获取价格	Amplifiers for 3 Wire Analog Electret Microphones
LMV1032UP-15	TI	获取价格	Amplifiers for 3-Wire Analog Electret Microphones
LMV1032UP-25	NSC	获取价格	Amplifiers for 3 Wire Analog Electret Microphones
LMV1032UP-25	TI	获取价格	Amplifiers for 3-Wire Analog Electret Microphones
LMV1032UP-25/NOPB	TI	获取价格	Amplifiers for 3-Wire Analog Electret Microphones 4-DSBGA
LMV1032UPX-06	TI	获取价格	Amplifiers for 3-Wire Analog Electret Microphones
LMV1032UPX-06	NSC	获取价格	Amplifiers for 3 Wire Analog Electret Microphones
LMV1032UPX-06/NOPB	TI	获取价格	Amplifiers for 3-Wire Analog Electret Microphones 4-DSBGA -40 to 85