Power Supply Rejection Ratio Calculator

✖Input Voltage Ripple is the ripple voltage of the input.ⓘ Input Voltage Ripple [V_in]			+10% -10%
✖Output Voltage Ripple is the ripple voltage of the output.ⓘ Output Voltage Ripple [V_out]			+10% -10%

✖Power Supply Rejection Ratio is the ratio of the change in input offset voltage with respect to the change in power supply voltage.ⓘ Power Supply Rejection Ratio [P_sr]

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Power Supply Rejection Ratio Solution

STEP 0: Pre-Calculation Summary

Formula Used

Power Supply Rejection Ratio = 20*log10(Input Voltage Ripple/Output Voltage Ripple)
P_sr = 20*log10(V_in/V_out)
This formula uses 1 Functions, 3 Variables

Functions Used

log10 - The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function., log10(Number)

Variables Used

Power Supply Rejection Ratio - (Measured in Decibel) - Power Supply Rejection Ratio is the ratio of the change in input offset voltage with respect to the change in power supply voltage.
Input Voltage Ripple - (Measured in Volt) - Input Voltage Ripple is the ripple voltage of the input.
Output Voltage Ripple - (Measured in Volt) - Output Voltage Ripple is the ripple voltage of the output.

STEP 1: Convert Input(s) to Base Unit

Input Voltage Ripple: 7.23 Volt --> 7.23 Volt No Conversion Required
Output Voltage Ripple: 5.14 Volt --> 5.14 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_sr = 20*log10(V_in/V_out) --> 20*log10(7.23/5.14)

Evaluating ... ...

P_sr = 2.9635035659851

STEP 3: Convert Result to Output's Unit

2.9635035659851 Decibel --> No Conversion Required

FINAL ANSWER

2.9635035659851 ≈ 2.963504 Decibel <-- Power Supply Rejection Ratio

(Calculation completed in 00.004 seconds)

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Credits

Created by Shashank

Nitte Meenakshi Institute of Technology (NMIT), Bangalore

Shashank has created this Calculator and 9 more calculators!

Verified by Rachita C

BMS College Of Engineering (BMSCE), Banglore

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Power Supply Rejection Ratio Formula

LaTeX Go

Power Supply Rejection Ratio = 20*log10(Input Voltage Ripple/Output Voltage Ripple)
P_sr = 20*log10(V_in/V_out)

What is Power Supply Rejection Ratio?

The Power Supply Rejection Ratio (PSRR) is defined as the absolute value of the ratio of the change in supply voltages to the resulting change in input offset voltage. The PSRR provides us with an indication of the degree of immunity the circuit has to noise voltages on the DC power lines.

How to Calculate Power Supply Rejection Ratio?

Power Supply Rejection Ratio calculator uses Power Supply Rejection Ratio = 20*log10(Input Voltage Ripple/Output Voltage Ripple) to calculate the Power Supply Rejection Ratio, The Power Supply rejection ratio is the ratio of the change in input offset voltage with respect to the change in power supply voltage. Power Supply Rejection Ratio is denoted by P_sr symbol.

How to calculate Power Supply Rejection Ratio using this online calculator? To use this online calculator for Power Supply Rejection Ratio, enter Input Voltage Ripple (V_in) & Output Voltage Ripple (V_out) and hit the calculate button. Here is how the Power Supply Rejection Ratio calculation can be explained with given input values -> 2.963504 = 20*log10(7.23/5.14).

FAQ

What is Power Supply Rejection Ratio?

The Power Supply rejection ratio is the ratio of the change in input offset voltage with respect to the change in power supply voltage and is represented as P_sr = 20*log10(V_in/V_out) or Power Supply Rejection Ratio = 20*log10(Input Voltage Ripple/Output Voltage Ripple). Input Voltage Ripple is the ripple voltage of the input & Output Voltage Ripple is the ripple voltage of the output.

How to calculate Power Supply Rejection Ratio?

The Power Supply rejection ratio is the ratio of the change in input offset voltage with respect to the change in power supply voltage is calculated using Power Supply Rejection Ratio = 20*log10(Input Voltage Ripple/Output Voltage Ripple). To calculate Power Supply Rejection Ratio, you need Input Voltage Ripple (V_in) & Output Voltage Ripple (V_out). With our tool, you need to enter the respective value for Input Voltage Ripple & Output Voltage Ripple and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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