I want to make a device for medical purposes.
I have a bit of experience with op-amp.
I need a PWM on the frequency of 100kHz currents within ± 0.05mA ~ 2mA with the ability to adjust it using a DAC.
Electrodes are connected to the ear of the patient, I tried to create a skin model of L3, C5, R19.
For me it's very important for the pulses to be rectangular and without emissions, how can I achieve it?
Any of your tips on choosing a scheme and components.