ISO122: can iso122 be used to add dc shift to output signal.

Namdeo Patil

Part Number: ISO122

imagine ISO122 has Vs1 as +/-5V and input is -1V, the VS2 is 0-10V , what will be output voltage ?

Should it be 4V, as input is -1V for a input voltage range of -5 to 5v in the same manner the output shall be 4v in the power range of 0 - 10V.

over 1 year ago

+1 Clemens Ladisch over 1 year ago

Guru 281620 points

This would be possible, but the isolation reduces signal quality.

To add a DC offset, just use a summing amplifier. See Designing Gain and Offset in Thirty Seconds.

0 Tom Hendrick over 1 year ago

TI__Guru**** 174620 points

Thanks for the info Clemens.

Hi Namdeo, You have to have bipolar supplies on each end of the ISO122. If VS1 is +/-5V, then VS2 should also be +/-5V. The ISO122 has gain = 1, so -1V in would be -1V out, you would need to review the detail Clemens sent to do the voltage shift.

Amplifiers

Amplifiers forum

ISO122: can iso122 be used to add dc shift to output signal.