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Apply Differential offset on differential amplifier?

Other Parts Discussed in Thread: THS4521

Hi All,


I'm using a THS4521 to measure a differential signal. I use Vcm to give the amplifier a common mode voltage off 1/2VCC to prevent clipping in ADC and the amplifier. The problem now is that the input signal is not bi-polar (Vin>=0V), but the ADC input is bipolar. I would only use half the range of the ADC.

It there a way to offset the amplifiers output differential? Something like below?

Best regards,

[EDIT]

Well I just tried it and this did the job. But the amplification had to be doubled to cover the positive and negative range ;)

Tjarco