I am working with ad620 (instrumental amplifier) IC. I am using 5 Volts on pin7 and pin4 is grounded to power the IC. I am using 0.38 Volts dc supply on pin3 and pin2 is grounded. The reference pin is also grounded. The gain between pin1 and pin8 is set as 470 ohm. There is an error in output voltage. I am changing the gain but still the output is 0.45 Volts. Secondly, changing the input voltage on pin3 do not change the output. It remains same as 0.45 Volts. If gain resister is removed the output voltage is 0.38v. Where is the problem and what is the solution for it ? Proteus schematics is properly working but problem is in hardware circuit design. Please check the Circuit diagram below.
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