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LMP7312

更新时间: 2024-09-19 11:13:43
品牌 Logo 应用领域
德州仪器 - TI 放大器运算放大器
页数 文件大小 规格书
32页 1852K
描述
单路、5.5V、1MHz 运算放大器

LMP7312 数据手册

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LMP7312  
www.ti.com  
SNOSB32B MARCH 2010REVISED MARCH 2013  
LMP7312 Precision SPI-Programmable AFE with Differential/Single-Ended Input/Output  
Check for Samples: LMP7312  
1
FEATURES  
DESCRIPTION  
Typical Values, TA = 25°C, V+=5V, V-=0V.  
The LMP7312 is a digitally programmable variable  
gain amplifier/attenuator. Its wide input voltage range  
and superior precision make it a prime choice for  
applications requiring high accuracy such as data  
acquisition systems for IO modules in programmable  
2
Gain Bandwidth 1 MHz  
Input Voltage Range (G= 0.096 V/V) -15V to  
+15V  
logic control (PLC). The LMP7312 provides  
a
Core Op-Amp Input Offset Voltage 100 µV  
(Max)  
differential output to maximize dynamic range and  
signal to noise ratio, thereby reducing the overall  
system error. It can also be configured to handle  
single ended input data converters by means of the  
VOCM pin (see Application Section for details). The  
inputs of LMP7312 can be configured in attenuation  
mode to handle large input signals of up to +/- 15V,  
as well as in amplification mode to handle current  
loops of 0-20mA and 4-20mA.The LMP7312 is  
equipped with a null switch to evaluate the offset of  
the internal amplifier. A ensured 0.035% maximum  
gain error (for all gains) and a maximum gain drift of  
5ppm over the extended industrial temperature range  
(-40° to 125°C) make the LMP7312 very attractive for  
high precision systems even under harsh conditions.  
A low input offset voltage of 100µV and low voltage  
Supply Current 2 mA (Max)  
Gain (Attenuation Mode) 0.096 V/V, 0.192  
V/V0.384 V/V, 0.768 V/V  
Gain (Amplification Mode) 1 V/V, 2 V/V  
Gain Error 0.035% (Max)  
Core Op-Amp PSRR 90 dB (Min)  
CMRR 80 dB (min)  
Adjustable Output Common Mode 1V to 4V  
Temperature Range 40 to 125°C  
Package 14-Pin SOIC  
APPLICATIONS  
noise of 3µVpp give the LMP7312  
a superior  
Signal Conditioning AFE  
±10V; ±5V; 0-5V; 0-10V; 0-20mA; 4-20mA  
performance. The LMP7312 is fully specified from -  
40° to 125°C and is available in SOIC-14 package.  
Data Acquisition Systems  
Motor Control  
Instrument and Process Control  
Remote Sensing  
Programmable Automation Control  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010–2013, Texas Instruments Incorporated  

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