CMRR Meaning and
Definition
-
CMRR, also known as Common Mode Rejection Ratio, is a parameter used to measure the ability of an electronic device or system to reject common mode noise signals. Common mode noise refers to the interference or disturbances that are present equally and in phase on both input lines of a balanced circuit, usually caused by factors such as electromagnetic interference (EMI) or power supply ripple.
CMRR is expressed as a ratio and quantifies the signal rejection capability of a device or system. The higher the CMRR value, the better the device is at rejecting common mode noise. It is typically measured in decibels (dB) and calculated as the difference in amplitude between the desired signal and the common mode noise.
CMRR is an essential specification in many applications, especially in sensitive analog circuits, as it ensures accurate and reliable signal processing. Devices or systems with high CMRR are capable of rejecting unwanted noise, enabling the accurate amplification or transmission of desired signals. This is particularly crucial in audio, video, and communication systems, where high-fidelity and interference-free transmission of signals is essential.
Engineers and designers often consider the CMRR value when selecting components or designing circuits to ensure that the desired signals are preserved while minimizing the impact of unwanted noise. Thus, CMRR plays a vital role in achieving reliable and high-quality electronic system performance.
Common Misspellings for CMRR
Infographic
Add the infographic to your website:
