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LMP2234_0812 PDF预览

LMP2234_0812

更新时间： 2024-11-23 05:42:27
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 854K
描述
Micropower, 1.6V, Precision, Operational Amplifier with CMOS Input

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中文翻译

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LMP2234_0812 数据手册

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December 18, 2008  
LMP2234 Quad  
Micropower, 1.6V, Precision, Operational Amplifier with  
CMOS Input  
General Description  
The LMP2234 is a quad micropower precision amplifier de-  
signed for battery powered applications. The 1.6 to 5.5V  
operating supply voltage range and quiescent power con-  
sumption of only 50 μW extend the battery life in portable  
systems. The LMP2234 is part of the LMP® precision amplifier  
family. The high impedance CMOS input makes it ideal for  
instrumentation and other sensor interface applications.  
Features  
(For VS = 5V, Typical unless otherwise noted)  
Supply current at 1.8V  
Operating voltage range  
Low TCVOS  
VOS  
Input bias current  
PSRR  
CMRR  
Open loop gain  
Gain bandwidth product  
Slew rate  
Input voltage noise, f = 1 kHz  
Temperature range  
31 µA  
1.6V to 5.5V  
■
■
±0.75 µV/°C (max)  
±150 µV (max)  
±20 fA  
■
■
■
■
■
■
■
■
■
■
120 dB  
97 dB  
120 dB  
130 kHz  
The LMP2234 has a maximum offset voltage of 150 μV and  
0.3 μV/°C offset drift along with low bias current of only  
±20 fA. These precise specifications make the LMP2234 a  
great choice for maintaining system accuracy and long term  
stability.  
58 V/ms  
60 nV/√Hz  
–40°C to 125°C  
The LMP2234 has a rail-to-rail output that swings 15 mV from  
the supply voltage, which increases system dynamic range.  
The common mode input voltage range extends 200 mV be-  
low the negative supply, thus the LMP2234 is ideal for ground  
sensing in single supply applications.  
Applications  
Precision instrumentation amplifiers  
■
The LMP2234 is offered in 14-Pin SOIC and TSSOP pack-  
ages.  
Battery powered medical instrumentation  
High impedance sensors  
■
■
■
■
Strain gauge bridge amplifier  
Thermocouple amplifiers  
Typical Application  
Strain Gauge Bridge Amplifier  
20203468  
LMP® is a registered trademark of National Semiconductor Corporation.  
© 2008 National Semiconductor Corporation  
202034  
www.national.com  
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