i have designed constant current source with the following value of resistors
the resistor which decides the current, Rx=1Mohms
here i have attached the circuit diagram for the same.
input is AC voltage 500mV with a fixed frequency of 250kHz.
please suggest if 1Mohm is a right value for Rx or it should be limited by the Opamp IC used for the circuit. and if so which parameter i should look into?
thanks and with best regards