Hi everyone,
I am currently try to contruct a circuit which microchip will read the value from ADC.
I have connect an op-amp (MC1458) to the ADC (RA0) of the 16F876A. I found that the output voltage of the op-amp when disconnect and connect to the chip was different.
The output voltage when it is connected to chip is very low (mV) compare to the output when not connect to the chip.
Can anyone pls tell me what i need to do to fix this problem?
THANKS
I am currently try to contruct a circuit which microchip will read the value from ADC.
I have connect an op-amp (MC1458) to the ADC (RA0) of the 16F876A. I found that the output voltage of the op-amp when disconnect and connect to the chip was different.
The output voltage when it is connected to chip is very low (mV) compare to the output when not connect to the chip.
Can anyone pls tell me what i need to do to fix this problem?
THANKS