I have made function generator circuit using XR2206 and it works perfectly with varying frequencies of 20Hz-20KHz.. But the the problem is that when i connect this function generator output to the input of AD620 (pin 3) having Rg=100 then there is no output at the pin 6 of AD620 :sad: whereas when i connected the same fucntion generator output to my low pass butterworth filter (Fc = 25 Hz) then its working as well as showing excellent frequency response.. I am just stuck here ... what's the problem with AD620...? ( my AD620 circuit is working fine when input is given by lab Function generators)
Consider different offset voltages. Without knowing the XR2206 and AD620 supply voltages, the problem can't be analyzed however. Also, what's the -IN voltage?
Actually I am giving supply voltages separately to both circuits , I mean that i am giving +-6v to AD620 circuit and from another supply 9V and Ground to the XR2206 circuit , and I had also tried, that by giving the single supply to both circuits i.e giving same +6V of AD620 to the XR2206 supply pin and same ground of AD620 to XR2206 ground pin but no use, no output .. :sad: