LMP7731

更新时间： 2024-11-06 03:51:43

品牌	Logo	应用领域
美国国家半导体 - NSC		运算放大器
页数	文件大小	规格书
20页	708K
描述
2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO, Operational Amplifier

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LMP7731 数据手册

July 2007

LMP7731

2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO, Operational

Amplifier in SOT23-5

General Description

The LMP7731 is a single, low noise, low offset voltage, rail-

to-rail input and output, low voltage precision amplifier. The

LMP7731 is part of the LMP^®precision amplifier family and is

ideal for precision and low noise applications with low voltage

requirements.

Features

(Typical values, T_A= 25°C, V_S= 5V)

Input voltage noise

■

f = 3 Hz

3.3 nV/√Hz

2.9 nV/√Hz

±40 µV

±1.0 µV/°C

130 dB

—

f = 1 kHz

Offset voltage (max)

Offset voltage drift (max)

CMRR

Open loop gain

GBW

■

This operational amplifier offers low voltage noise of 2.9 nV/

with a 1/f corner of only 3 Hz and low DC offset with a

maximum value of ±40 µV, targeting high accuracy, low fre-

quency applications. The LMP7731 has bipolar input stages

with a bias current of only 1.5 nA. This low input bias current,

complemented by the very low AC and DC levels of voltage

noise, makes the LMP7731 an excellent choice for photom-

etry applications.

130 dB

22 MHz

2.4 V/µs

0.001%

Slew rate

THD @ f = 10 kHz, A_V= +1, R_L= 2 kΩ

Supply current per channel

Supply voltage range

Operating temperature range

Input bias current

RRIO

2.2 mA

1.8V to 5.5V

−40°C to 125°C

±1.5 nA

The LMP7731 provides a wide GBW of 22 MHz while con-

suming only 2 mA of current. This high gain bandwidth along

with the high open loop gain of 130 dB enables accurate sig-

nal conditioning in applications with high closed loop gain

requirements.

5-Pin SOT23 package

The LMP7731 has a supply voltage range of 1.8V to 5.5V,

making it an ideal choice for battery operated portable appli-

cations.

Applications

Thermopile amplifier

■

The LMP7731 is offered in a 5-pin SOT23 package.

Gas analysis instruments

Photometric instrumentation

Medical instrumentation

Typical Application

Thermopile Signal Amplifier

20175201

LMP^®is a registered trademark of National Semiconductor Corporation.

201752

www.national.com

12 3 4 5 6 7...20

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与LMP7731相关器件

型号	品牌	获取价格	描述	数据表
LMP7731_08	NSC	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731_09	NSC	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731_15	TI	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731MA	NSC	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731MA/NOPB	TI	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731MAX	NSC	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731MAX/NOPB	TI	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier
LMP7731MF	NSC	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO, Operational Amplifier
LMP7731MF/NOPB	NSC	获取价格	IC OP-AMP, 120 uV OFFSET-MAX, 21 MHz BAND WIDTH, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN, Ope
LMP7731MF/NOPB	TI	获取价格	2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier

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