Hello everyone,
I am building a data acquisition system,i am using AD620 (instrumentation amplifier), have read data sheet thoroughly and i have used the following circuit which i obtained from internet (image attached ). I have also use two zero pots to offset zero on the inverting terminal of AD620.(images attached)
Problems:
1) even when the differential signal is not applied the output of AD620 jumps to 3.5 to 3.87volts
What is that i am doing wrong ??. i have tried various methods even then i am unable to amplify the differential signal
should i add resistors on both input terminals of AD620? please help .
p.s. I have grounded the reference pin
Thank you in advance.
(Internet image)
.
Thank you in advance.
I am building a data acquisition system,i am using AD620 (instrumentation amplifier), have read data sheet thoroughly and i have used the following circuit which i obtained from internet (image attached ). I have also use two zero pots to offset zero on the inverting terminal of AD620.(images attached)
Problems:
1) even when the differential signal is not applied the output of AD620 jumps to 3.5 to 3.87volts
What is that i am doing wrong ??. i have tried various methods even then i am unable to amplify the differential signal
should i add resistors on both input terminals of AD620? please help .
p.s. I have grounded the reference pin
Thank you in advance.
(Internet image)
.
Thank you in advance.