DJP1992
Newbie level 5
Hi All,
I was trying to design a difference amplifier to get a difference of two differential signals, say V1 and V2.
I intentionally used large resistors just to isolate the issue of resistive loading(which otherwise result in loss of opamp gain) but still i am unable to get the difference of two signals.
I observed that the DC voltage at the output of the opamp is close to 10mV (no matter what is the Commonmode value of input signals)which is forcing the output signal to stay close to VSS.:bang:
Is the wrong way to design a difference amplifier in analog design?
Please share your views on this.
Thanks,
Dhiraj
I was trying to design a difference amplifier to get a difference of two differential signals, say V1 and V2.
I intentionally used large resistors just to isolate the issue of resistive loading(which otherwise result in loss of opamp gain) but still i am unable to get the difference of two signals.
I observed that the DC voltage at the output of the opamp is close to 10mV (no matter what is the Commonmode value of input signals)which is forcing the output signal to stay close to VSS.:bang:
Is the wrong way to design a difference amplifier in analog design?
Please share your views on this.
Thanks,
Dhiraj