Resistor-based Temperature Sensors In Cmos Tech... -

High-ohmic polysilicon resistors can be fabricated in a smaller footprint than the multi-transistor arrays required for high-accuracy BJT sensing.

Resistor-based oscillators (where the frequency is modulated by resistance changes) allow for direct time-to-digital conversion, simplifying the analog-to-digital interface. Challenges and Trade-offs Resistor-based Temperature Sensors in CMOS Tech...

Despite their benefits, these sensors face two primary hurdles: and non-linearity . High-ohmic polysilicon resistors can be fabricated in a

These utilize the doped regions of the silicon substrate. They often exhibit a higher TCR but are more susceptible to noise and substrate interference. different materials offer varying thermal responses:

At the heart of a resistor-based sensor is the Temperature Coefficient of Resistance (TCR). In CMOS processes, different materials offer varying thermal responses: