I am trying to design the following schematics:
There are two kOhms resistance which are connected serially. One is load and another is device resistance. I need to apply the voltage in a the following way using IC switch
When voltage on the IC switch is non zero the voltage is applied only on the device
When it is zero the both R_load and R_device connected serially
Since the signal through the resistance is a pulse with duration less than 100 ns I am using a couple of op-Amps for impedance matching (the measurements are carrying out on 1 MOhm oscilloscope channel). So I have to use fast IC switch.
For the first experiment I used constant voltage (~500 mV) applied on both resistance. I see the oscillations at the moment when switch is on or off. How can I remove these oscilltaions? I tried these schematics without op-Amps, and saw the same behaviour.
I tried on the several switches