Other Parts Discussed in Thread: LMT87,
Hi Team,
Say in one case, ADC Vs = 3.3V, internal Vref 2.5V is fixed, cannot be changed.
LM135 is used for ThermoCouple - CJC purpose. Then fits the output voltage into ADC for calculation.
The problem right now is that LM135 max output voltage could be 3.7V at temp of 100C. (K = 273 + 100 = 373)
100C is the highest Ta (3.7V) and expecting 0C = 273K is lowest Ta. (2.7V)
Unfortunately, 3.3V is the only supply we have here.
Is there a way to kind of offset the whole T-V dynamic range. (2.7V - 3.7V) to something like 1V to 2V for example?
Any input is welcome, if this is not possible, it's ok, at least I want to double check.
Thanks.
Andrew