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TINA/Spice/THS4121: Output Error Larger Than Input Offsets

Part Number: THS4121
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Hi. I'm trying to use the THS4121 in a transimpedance amplifier application. In PSPICE I'm seeing output error that exceeds the input offset values.

Apart from that, I'm unsure the THS4121 can provide the V/I gains I'm needing. The maximum feedback resistance needed is 100MEG ohms. Can you provide guidance?