whitecollar
Junior Member level 1
Hi guys,
I'm trying to use an OP-AMP as a non-inverting amp with a gain of 350, and ALSO as a unity gain buffer (but not at the same time). It's feeding the ADC input of a PIC micro controller.
Is it acceptable to use the MOSFET to switch the voltage divider to ground as in the circuit attached?
So:
1) FET OFF = OP-AMP acts as unity gain buffer.
2) FET ON = OP-AMP acts as non-inverting amplifier with gain of 350.
Are there any problems with this?
Thank you!
I'm trying to use an OP-AMP as a non-inverting amp with a gain of 350, and ALSO as a unity gain buffer (but not at the same time). It's feeding the ADC input of a PIC micro controller.
Is it acceptable to use the MOSFET to switch the voltage divider to ground as in the circuit attached?
So:
1) FET OFF = OP-AMP acts as unity gain buffer.
2) FET ON = OP-AMP acts as non-inverting amplifier with gain of 350.
Are there any problems with this?
Thank you!