Very asymetrical power supply for INA118

Orlando Grigoriadi

Other Parts Discussed in Thread: INA118

Hello everyone,

I would like to ask the following question.

I would like to use the INA118 instrumentation amplifier with a very asymmetrical power supply.

Supply with a 10V the V+ and with a -5V the V-.

Can someone pls tell me how the INPUT COMMON MODE RANGE vs OUTPUT VOLTAGE graph should be??

Thank you in advance

0 Pete%20Semig over 11 years ago

Hello Orlando,

Can you please provide your reference voltage and gain?

0 Orlando Grigoriadi over 11 years ago in reply to Pete%20Semig

Hi Peter and thank you for your interest.

The Gain is equal to 1 (unity Gain) and the Reference voltage is GND (0 V)

0 Pete%20Semig over 11 years ago in reply to Orlando Grigoriadi

Hello Orlando,

Here is an approximate graph of Vicm vs. output voltage for your scenario. Please note that this is a simulation and not based on measured data.

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