• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 47 subscribers
  • Views 2404 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Transimpedance Amplifier Simulation problems....

Ted Larson
Prodigy 90 points
Other Parts Discussed in Thread: OPA657

I want to design a high-gain Transimpedance Amplifier around an OPA657.  I was going to simulate it in Altium Designer, but the spice model for the OPA657 blows up when I do it.   I ended up dropping in an LMH6624MA instead (which is one of the Altium supplied models), and it works fine.  However....I still want to try the OPA657.  So, I decided to download and install TINA and see if I could build one up there.  Anyway, the transient analysis yields a flat line on TINA. with this design:

My signal source is a Si PIN photodiode with 6pF, and my test signal is 1uA at 10mhz

What am I doing wrong?  Suggestions?

Thanks,

-Ted