Other Parts Discussed in Thread: OPA2613
Hello, I am having an issue using the OPA2613 chip to create a current driver with a high bandwidth switching speed. I
am getting some self-oscillation at 2.8MHz in my simulation. We are trying to switch at speeds beyond 2.8MHz, so we do not want to decrease the bandwidth. Do you have any techniques for reducing the feedback, or is it intrinsic in our circuit design?
I want to see if there is a way to rectify the problem, but I was also wondering if there is a better way to take a voltage input and drive a current proportional to the input voltage (Iout is a linear function of Vin).
Note: We are using the OPA1613 chip due to the high bandwidth, so we are trying to build a high speed, low noise circuit if possible. What methods are there for reducing the noise in the current driver?
Thank you,
Keith McKinzie
PS: Here is the circuit topology I am using. Is this an inherently unstable circuit? (Note: Vdd = -Vss = 5V)
