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LMP7732

更新时间: 2024-11-04 05:42:27
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
20页 751K
描述
2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier

LMP7732 数据手册

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June 16, 2008  
LMP7732  
2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier  
General Description  
Features  
The LMP7732 is a dual low noise, low offset voltage, rail-to-  
rail input and output, low voltage precision amplifier. The  
LMP7732 is part of the LMP® precision amplifier family and is  
ideal for precision and low noise applications with low voltage  
requirements.  
(Typical values, TA = 25°C, VS = 5V)  
Input voltage noise  
f = 3 Hz  
3.3 nV/Hz  
2.9 nV/Hz  
±40 µV  
±1.3 µV/°C  
130 dB  
f = 1 kHz  
Offset voltage (max)  
Offset voltage drift (max)  
CMRR  
Open loop gain  
GBW  
Slew rate  
THD @ f = 10 kHz, AV = 1, RL = 2 kΩ  
Supply current  
Supply voltage range  
Operating temperature range  
Input bias current  
RRIO  
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 LMP7732 has bipolar junction 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 LMP7732 an excellent choice for  
photometry applications.  
130 dB  
22 MHz  
2.4 V/µs  
0.001%  
4.4 mA  
1.8V to 5.5V  
−40°C to 125°C  
±1.5 nA  
The LMP7732 provides a wide GBW of 22 MHz while con-  
suming only 4 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.  
The LMP7732 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  
Gas analysis instruments  
The LMP7732 is offered in the 8-Pin SOIC and MSOP pack-  
ages.  
Photometric instrumentation  
Medical instrumentation  
The LMP7731 is the single version of this product and is of-  
fered in the 5-Pin SOT-23 and 8-Pin SOIC packages.  
Typical Application  
Thermopile Signal Amplifier  
30015001  
LMP® is a registered trademark of National Semiconductor Corporation.  
© 2008 National Semiconductor Corporation  
300150  
www.national.com  

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