Before you do anything else, figure out why you're getting a sine wave at the output. My first guess is that your amplifier is probably oscillating. Read the attached.Hello, I'm using a trans-impedance amplifier and I need to measure the rise time at the output, but I'm getting a AC sinusoidal waveform at the output.
No.In order to measure the rise time do I have to use any modulation circuits?
Actually I'm using UV source light that passes through optical chopper which falls on photodetector and this is connected to a transimpedance amplifier. At this amplifier output I'm trying to measure rise time on oscilloscope, instead getting a sine wave for which I have no idea how to calculate. Thanks for your reply.Set current pulse to zero.
Do you still see a sinewave out?
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by Jake Hertz