THS4631DGNEVM: DC bias voltage to the Amplifier or Inputs

Mark Philip Felipe

Hi Team,

Using THS4631DGNEVM as a non-inverting amplifier with a gain of 2. I am sending a -5V to +5V signal which will be amplified to -10+10V. However, I would also like to add a DC bias so that the output signal is 0V to 20V. I cannot add the bias signal to the input waveform, so I am trying to see if there is a way to add a DC bias voltage to the amplifier or inputs (such as a summing amplifier configuration) that would achieve this.

Thank you.

over 4 years ago

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi Mark,

this is not possible with a +/-15V supply voltage:

mark_ths4631.TSC

Kai

0 Michael Steffes over 4 years ago in reply to kai klaas69

Guru 48395 points

And of course Mark, you can adapt this to work using +25V and -5V supplies running inverting summing gain of 2 on a +/-5V input and summing in the -5V supply to shift the DC up to +10

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THS4631DGNEVM: DC bias voltage to the Amplifier or Inputs