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LMC6001A MDC PDF预览

LMC6001A MDC

更新时间: 2023-09-03 20:38:23
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德州仪器 - TI 放大器
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18页 555K
描述
超低输入电流放大器 | Y | 0 | -40 to 85

LMC6001A MDC 数据手册

 浏览型号LMC6001A MDC的Datasheet PDF文件第6页浏览型号LMC6001A MDC的Datasheet PDF文件第7页浏览型号LMC6001A MDC的Datasheet PDF文件第8页浏览型号LMC6001A MDC的Datasheet PDF文件第10页浏览型号LMC6001A MDC的Datasheet PDF文件第11页浏览型号LMC6001A MDC的Datasheet PDF文件第12页 
LMC6001-MIL  
www.ti.com  
SNOSD60 JUNE 2017  
6 Detailed Description  
6.1 Overview  
LMC6001-MIL has an extremely low input current of 25 fA. In addition, its ultra-low input current noise of 0.13  
fA/Hz allows almost noiseless amplification of high-resistance signal sources. LMC6001-MIL is ideally suited for  
electrometer applications requiring ultra-low input leakage current such as sensitive photodetection  
transimpedance amplifiers and sensor amplifiers.  
6.2 Functional Block Diagram  
6.3 Feature Description  
6.3.1 Amplifier Topology  
The LMC6001-MIL incorporates a novel op amp design topology that enables it to maintain rail-to-rail output  
swing even when driving a large load. Instead of relying on a push-pull unity gain output buffer stage, the output  
stage is taken directly from the internal integrator, which provides both low output impedance and large gain.  
Special feed-forward compensation design techniques are incorporated to maintain stability over a wider range of  
operating conditions than traditional op amps. These features make the LMC6001-MIL both easier to design with,  
and provide higher speed than products typically found in this low-power class.  
6.3.2 Latch-up Prevention  
CMOS devices tend to be susceptible to latch-up due to their internal parasitic SCR effects. The (I/O) input and  
output pins look similar to the gate of the SCR. There is a minimum current required to trigger the SCR gate  
lead. The LMC6001-MIL is designed to withstand 100-mA surge current on the I/O pins. Some resistive method  
should be used to isolate any capacitance from supplying excess current to the I/O pins. In addition, like an SCR,  
there is a minimum holding current for any latch-up mode. Limiting current to the supply pins will also inhibit  
latch-up susceptibility.  
6.4 Device Functional Modes  
The LMC6001-MIL has a single functional mode and operates according to the conditions listed in  
Recommended Operating Conditions.  
Copyright © 2017, Texas Instruments Incorporated  
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Product Folder Links: LMC6001-MIL  

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