Prahalad Singh
Jaipur Engineering College and Research Centre (JECRC), Jaipur
Prahalad Singh has created this Calculator and 50+ more calculators!
Payal Priya
Birsa Institute of Technology (BIT), Sindri
Payal Priya has verified this Calculator and 500+ more calculators!

1 Other formulas that you can solve using the same Inputs

Common-mode rejection ratio of the difference amplifiers
CMRR=20*log(modulus(Differential mode gain)/modulus(Common Mode Gain),10) GO

1 Other formulas that calculate the same Output

Common-mode rejection ratio of the difference amplifiers
CMRR=20*log(modulus(Differential mode gain)/modulus(Common Mode Gain),10) GO

Common Mode Rejection Ratio Formula

CMRR=20*log10(Differential mode gain/Common Mode Gain)
CMRR=20*log10(Ad/Acm)
More formulas
Power gain of the amplifier GO
Power gain of the amplifier when voltage and current are given GO
Current gain of the amplifier GO
Voltage gain of the amplifier GO
Power gain in terms of voltage gain and current gain GO
Voltage gain of amplifiers in decibels GO
Current gain of the amplifier in decibels GO
Output signal of an amplifier GO
Power delivered to the amplifier GO
Amplifier Power Efficiency GO
Signal Current GO
Voltage gain when resistance is given GO
Voltage across input terminal in an amplifier GO
Voltage across output in an amplifier GO
Overall voltage gain in an amplifier GO
Open-Circuit Voltage Gain GO
Short-Circuit Current Gain GO
Short-Circuit Transconductance GO
Open-Circuit Transresistance GO
Open-Circuit voltage gain of an amplifier GO
Open-Circuit voltage gain of an amplifier when short-circuit transconductance is given GO
Open circuit voltage gain when open circuit transresistance is given GO
Amplifier Transmission GO
differential input resistance GO
differential gain for the instrumentation amplifer GO
Output voltage for Instrumentation Amplifier GO
Transfer function when physical frequencies are given GO
Integrator Frequency of the Inverting Integrator GO
Input Bias Current GO
Transfer function of STC networks for high-pass filters GO
Transfer function of STC networks for low-pass filters GO
Transfer Function (for physical frequencies) of STC networks for low pass filter GO
Transfer Function (for physical frequencies) of STC networks for high pass filter GO
Magnitude Response |T(jω)| of STC network for low-pass filter GO
Magnitude Response |T(jω)| of STC network for high-pass filter GO
Phase Response ∠T(jω) of STC networks for low-pass filter GO
3-dB Frequency of STC Networks for low-pass frequency GO
3-dB Frequency of STC Networks for high-pass frequency GO
Input Offset Current GO
Time constant of STC GO
Process transconductance parameter of PMOS GO

Differential Mode Gain

Differential Mode Gain measured in db and denoted as Ad. The gain given to a voltage that appears between the two input terminals. It represents two different voltages on the inputs.

Common Mode Gain

Common Mode Gain measured in db and denoted as Acm. The gain given to a voltage that appears on both input terminals with respect to ground. This it the same input on both terminals

How to Calculate Common Mode Rejection Ratio?

Common Mode Rejection Ratio calculator uses CMRR=20*log10(Differential mode gain/Common Mode Gain) to calculate the CMRR, Common Mode Rejection Ratio -> The efficiency of a differential amplifier is measured by the degree of its rejection of common-mode signals in preference to differential signals. This is usually quantified by a measure known as the common-mode rejection ratio (CMRR). CMRR and is denoted by CMRR symbol.

How to calculate Common Mode Rejection Ratio using this online calculator? To use this online calculator for Common Mode Rejection Ratio, enter Differential mode gain (Ad) and Common Mode Gain (Acm) and hit the calculate button. Here is how the Common Mode Rejection Ratio calculation can be explained with given input values -> 20 = 20*log10(100/10).

FAQ

What is Common Mode Rejection Ratio?
Common Mode Rejection Ratio -> The efficiency of a differential amplifier is measured by the degree of its rejection of common-mode signals in preference to differential signals. This is usually quantified by a measure known as the common-mode rejection ratio (CMRR) and is represented as CMRR=20*log10(Ad/Acm) or CMRR=20*log10(Differential mode gain/Common Mode Gain). Differential mode gain / Differential gain is a kind of linearity distortion which affects the color saturation in TV broadcasting and Common Mode Gain (Acm) which is typically much smaller than the differential gain. Acm is the gain given to a voltage that appears on both input terminals with respect to ground. .
How to calculate Common Mode Rejection Ratio?
Common Mode Rejection Ratio -> The efficiency of a differential amplifier is measured by the degree of its rejection of common-mode signals in preference to differential signals. This is usually quantified by a measure known as the common-mode rejection ratio (CMRR) is calculated using CMRR=20*log10(Differential mode gain/Common Mode Gain). To calculate Common Mode Rejection Ratio, you need Differential mode gain (Ad) and Common Mode Gain (Acm). With our tool, you need to enter the respective value for Differential mode gain and Common Mode Gain and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate CMRR?
In this formula, CMRR uses Differential mode gain and Common Mode Gain. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • CMRR=20*log(modulus(Differential mode gain)/modulus(Common Mode Gain),10)
Share Image
Let Others Know
Facebook
Twitter
Reddit
LinkedIn
Email
WhatsApp
Copied!