Hello,
I'm looking to add the 2nd stage to photodiode transimpedance amplifier. All I want to achieve by 2nd stage is voltage gain and capability to drive 50 Ohm loads. The first stage is OPA657.
1) a) Given power supply for opamp +-5V, should I select the opamp that has Io,max=>200mA. I do expect Vpeak-to-peak,output to be 10V. b) Is that output current achievable only at maximum supply voltage, or as long as2) I need to get an opamp with maximum input impedance (well, anything
amplifier will do the job?
3) What is Iq per channel(Max)(mA)? 4) Would SOIC packaging be better in general? Given that pcb layout is optimized.Thanks in advance, Vitaliy