Hi Folks,
Has anyone ever examined using 2 channels of an OPA4991 to create a quasi-log amplifier for TIA applications?
Sort of like this:
Curious if anyone has previously explored this?
Thanks,
-Chris
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Hi Folks,
Has anyone ever examined using 2 channels of an OPA4991 to create a quasi-log amplifier for TIA applications?
Sort of like this:
Curious if anyone has previously explored this?
Thanks,
-Chris
Hello Chris,
This technique has been done many times. Obviously the 2nd amplifier can be overdriven. The only mention in the data sheet I saw for overload was a 400ns typical delay.