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.

BJT sensors require a minimum "headroom" voltage to operate accurately. Resistor-based topologies can often operate at much lower supply voltages (sub-1V), aligning better with modern ultra-low-power rails. 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

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

These utilize the doped regions of the silicon substrate. They often exhibit a higher TCR but are more susceptible to noise and substrate interference.