Signal Conditioning using Opamp -Need Help
If you just fed the ADC with the range 0.6V to 1.6V corresponding to 0ºC to 100ºC, you'd have a range of 1V going into a 5V ADC. If the ADC is 10 bit then you'd have approximately 200 least significant bits change for a 100ºC change in temperature.

That, is a resolution of 0.5ºC and, if you could average 10 measurements this would give you 0.05ºC resolution (I'm assuming here that noise would likely give you 1 or 2 bits of variation in the measurement i.e. you'd be implementing a form of dithering).

The question then remains, how much resolution do you require to justify adding an op-amp circuit?