Hello,
I need to design a 1PPS driver with rising edges <50ns and driving a 10V voltage through a 50ohms adapter (the total supply is therefore 20V due to the bridge divider) :
I was able to simulate the circuit (see attached) and it works well. But, I find a phenomenon that I can't explain. The amp's output starts to increase in the absence of input voltage :
I'm afraid it's a saturation problem and not an artifact. However, the 0V voltage is quite far from the supply rail voltage for -5V. Do you have any ideas/suggestions about saturation voltages and supply rails?
