Summing Amplifier Calculator

January 22nd, 2010 by Adrian S. Nastase


Bipolar to Unipolar Converter Example

The calculator solves the summing amplifier resistors based on the input and output voltage range requirements. It is a great tool to design a bipolar to unipolar converter, as an example and other circuits.

Enter the input range, Vin1 to Vin2, the output range, Vout1 to Vout2 and a reference voltage Vref which helps in adjusting the common-mode level of the amplifier. Since the 2-input summing amplifier has 4 resistors, you need to choose two resistors, R1 and R3, and calculate R2 and R4. For more details about this calculator read How to Design a Summing Amplifier Calculator.

Given Input Range

Vin1 = V Vin2 = V

Required Output Range

Vout1 = V Vout2 = V

Choose a Reference Voltage

V2 = V

Choose R1 and R3

R1 = kOhm R3 = kOhm

Calculate R2 and R4

R2 = kOhm R4 = kOhm
JavaScript by
Glenn Stevenson

The default values show a bipolar to unipolar converter with the input range -5V to +5V and output 0 to 3V. If the results are negative or infinity you need to change the input data. Read How to Design a Summing Amplifier Calculator for help.

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Categories: Analog Design, Calculators, Summing amplifier

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1 Comment to “Summing Amplifier Calculator”

  1. electricman says:

    Cool! I used it to design my bipolar to unipolar converter. Thanks.

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