Part Number: OPA857EVM Other Parts Discussed in Thread: OPA857 , , Tool/software: TI-RTOS 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…
Hi Hasan,
It's really good of you to follow up.
I think I've managed to work out the issue. I've realised the issue was the gain was too low and I could not detect my signal.
This all occurred from incorrectly calculating the current produced…
Part Number: TIDA-01573 Other Parts Discussed in Thread: OPA857 , OPA857EVM-978 , ADC12J1600 , LMG1020 , LMG1020EVM-006 Tool/software: WEBENCH® Design Tools Hello, I'm, working on some device in automotive and I would like to use your products (TIDA-01573…
Part Number: OPA857EVM-978 Firstly, I am trying to set the module into test mode to verify it's working correctly before connected a diode.
In the datasheet it species that I first must 'set the Test_SD pin to +VS' and includes a diagram: …
Hi Gerard,
The EVM was designed in this particular way to meet
(1) the datasheet output load of 500 ohms, AND
(2) achieve a 50 ohm match to the transformer on both the primary and secondary side.
You are free to change the components on the EVM any…
Part Number: OPA857EVM Other Parts Discussed in Thread: OPA857 , TIDA-00725 , Tool/software: TI-RTOS Hi
Is there anyway to test the functionality of signal chain circuit before connecting it to photodiode. I mean which signal should I feed to this board…
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…
Hello Enpa,
Your understanding of the datasheet is correct. The quote from page 17 is referring to a DC bias at Test_IN if you are wanting to use the OPA857 in Test mode.
The OPA857 EVM outlines and explains the test procedure for this device in detail…
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…