picstudent
New Member
Hello
Is it mandatory to use offset null-ing preset in OP07 instrumentation op amp?
OP07 has only very very low offset voltage. Can we null such very low values using 20K preset? If so can we use blue multi-turn trim-pots for the purpose? Or any special parts for that?
My OP07 is used to amplify a shunt resistor voltage drop in millivolts to around 2.048 Volts. It goes to a ADC. So gain and offset critical to keep voltage within scale of ADC. But since all resistor values are not available can we use trimpots in the feed back path to adjust gain and offset? Or else how the range is adjusted using available parts?
Please suggest
regards
Roy Thomas
Is it mandatory to use offset null-ing preset in OP07 instrumentation op amp?
OP07 has only very very low offset voltage. Can we null such very low values using 20K preset? If so can we use blue multi-turn trim-pots for the purpose? Or any special parts for that?
My OP07 is used to amplify a shunt resistor voltage drop in millivolts to around 2.048 Volts. It goes to a ADC. So gain and offset critical to keep voltage within scale of ADC. But since all resistor values are not available can we use trimpots in the feed back path to adjust gain and offset? Or else how the range is adjusted using available parts?
Please suggest
regards
Roy Thomas