Hi,
I am looking to use a PIC A/D channel, the PIC is PICLF1936. I have used a forward biased diode connected with a 1K resistor to measure temperature, every 2mV gives a degree change.
I am trying to implement the same with a voltage divider. The network set to 500mV, using a 10k (source resistor) and 2K connected to 0V. The source voltage being adjusted from a DAC. Set to 3.3V. Is there any thing that I might have missed, in particular A/D impedance if PIC etc.
Thanks in advance.
Rajinder
I am looking to use a PIC A/D channel, the PIC is PICLF1936. I have used a forward biased diode connected with a 1K resistor to measure temperature, every 2mV gives a degree change.
I am trying to implement the same with a voltage divider. The network set to 500mV, using a 10k (source resistor) and 2K connected to 0V. The source voltage being adjusted from a DAC. Set to 3.3V. Is there any thing that I might have missed, in particular A/D impedance if PIC etc.
Thanks in advance.
Rajinder