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LMV793 current to voltage converter?

Other Parts Discussed in Thread: LMV793

I am looking to find out if the LMV793 can be used as a current to voltage translator. My criteria is:

0 to 1.8V

80MHz 

10uA current drive when on

0uA when off

I attached your document that shows the circuit. The TI document is AN-31.pdf. The circuit is on page 3 in the bottom right corner.

AN-31.pdf

  • Hi Harold,
    The LMV793 input capacitance (Figure 40 showing > 15pF) is too high to use that Transimpedance circuit you have identified. Assuming your current source is a photodiode, the input capacitance will be even higher due to the photodiode capacitance and would further reduce the attainable bandwidth away from your 80MHz requirement.

    Please see some of these links to help you estimate attainable bandwidth and to help you choose the right part for that configuration:
    e2e.ti.com/.../1566893
    e2e.ti.com/.../165119

    Regards,
    Hooman