scholarly journals A Broadband, High Common-Mode Rejection Ratio Instrumentation Amplifier

2021 ◽  
Author(s):  
Marcel J. Van Der Horst
Keyword(s):  
Instrumentation Amplifier ◽  
Common Mode ◽  
Common Mode Rejection Ratio ◽  
Rejection Ratio

CMRR Analysis of the 3 Op-Amp Instrumentation Amplifier with Noise

2014 ◽  
Vol 488-489 ◽  
pp. 1096-1099
Author(s):  
Tie Feng Wu ◽  
Zhi Chao Zhao ◽  
De Wei Dai ◽  
Shun Ji Piao ◽  
Jing Li
Keyword(s):  
Instrumentation Amplifier ◽  
Weak Signal ◽  
Common Mode ◽  
Common Mode Rejection Ratio ◽  
Application Range ◽  
Op Amp ◽  
Rejection Ratio ◽  
The Common

This paper researches the common mode rejection ratio (CMRR) of 3 op-amp instrumentation amplifier of amplifying weak signal and presents a new calculation modal considering noise, non-ideal amplifiers, matched resistor and application restricted by the factors of affecting CMRR. At last, a instrumentation amplifier was designed and built and its measured and computed results of modal are compared. The results show that this modal presented enhances calculating precision and extends application range of instrumentation amplifier. It is valid and reasonable.

scholarly journals Balanced homodyne detection with high common mode rejection ratio based on parameter compensation of two arbitrary photodiodes

2015 ◽  
Vol 23 (18) ◽  
pp. 23859 ◽  
Author(s):  
Xiaoli Jin ◽  
Jing Su ◽  
Yaohui Zheng ◽  
Chaoyong Chen ◽  
Wenzhe Wang ◽  
...  
Keyword(s):  
Homodyne Detection ◽  
Common Mode ◽  
Common Mode Rejection Ratio ◽  
Rejection Ratio ◽  
Parameter Compensation

Fully Differential Class-AB OTA with Improved CMRR

2017 ◽  
Vol 26 (11) ◽  
pp. 1750169 ◽  
Author(s):  
Francesco Centurelli ◽  
Pietro Monsurrò ◽  
Gaetano Parisi ◽  
Pasquale Tommasino ◽  
Alessandro Trifiletti
Keyword(s):  
Cmos Technology ◽  
Current Mirror ◽  
Differential Mode ◽  
Common Mode ◽  
Common Mode Rejection Ratio ◽  
Class Ab ◽  
Fully Differential ◽  
Rejection Ratio ◽  
Mode Behavior ◽  
The Common

This paper presents a fully differential class-AB current mirror OTA that improves the common-mode behavior of a topology that presents very good differential-mode performance but poor common-mode rejection ratio (CMRR). The proposed solution requires a low-current auxiliary circuit driven by the input signal, to compensate the effect of the common-mode input component. Simulations in 40-nm CMOS technology show a net reduction of common-mode gain of more than 90[Formula: see text]dB without affecting the differential-mode behavior; a sample-and-hold amplifier exploiting the proposed amplifier has also been simulated.

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