Other Parts Discussed in Thread: OPA855
Hello - What is the reason for the specific TIA output resistor divider (169ohm / 71.5ohm) to provide a 50ohm output impedance. This provides a 200ohm load to the TIA.
Alternatively, a 50ohm series resistor at the TIA output, would provide a 100ohm load to the TIA (including the 50ohm input impedance of the instrument).
With a +/-2.5V supply, max current would be +/-25mA. This appears reasonable based on the datasheet, is it desirable to limit the output current further?
Thanks!