In our design we are using differential amplifier( AD629BRZ) but it is behaving some what different.
my application is measuring current,for your reference i am adding schematics
my current is 48mA
I have measured voltage across the resistor is 4.8mV,but output of differential amplifier is 4.4mV,there is a drift of 0.4mV
why this much of variation in input and output?
I want exact input voltage in output what i will do ,can you please guide how to resolve this issue
Thanks in advance..
Siva Nageswara Rao
Mobile: +91 9030346190
we are facing one more issue with this differential amplifier(AD629BRZ) at temperature 60 C
we know already this amplifier having 0.3mV offset voltage at room temperature.
At 60 C we observed more deviation in results as per datasheet deviation is less.
For your information I am adding application circuit and test results
can you please give me your inputs for solving this issue.