Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 Hello,
I bought the OPA857EVM-978, but I won't feed the output to an ADC.
Instead, I will feed it to a passive filter and then to a PID circuit. Thus, I would like to convert the psudo…
Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 Hello;
I have purchased OPA857 EVM for transimpedance amplifier circuit measurement and avalanche Photodiode pulse measurement for my P.h.D thesis.
First I have connected J4 (And I limit the…
Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 The first time I tested this board I was unable to get it functioning properly.
I spoke with a representative of TI yesterday regarding this issue and was advised to post here to determine…
Hello Sima,
We simply connected the cathode of the APD to +150 V and the anode to inverting input of the OPA857.
We used the bandwidth extension EVM of OPA857(OPA857EVM-978).
I hope this answers your questions.
Thanks ,
Krishna
Hi Ali,
Please disregard my previous comment. I thought you were referring to the OPA857EVM, but I see that you have the OPA857EVM-978. The transformer primary winding will be a short circuit at DC, so you will not be able to make a DC measurement across…
Part Number: OPA857EVM Other Parts Discussed in Thread: OPA857 Hello,
I have tried a few different photodiodes with this board but I have only got ~30mV as my highest output. I'm woundering what the highest output is for this board. Is it depending on…