Title: Direct Temperature to Digital Converters with Low Supply Sensitivity for Power/Thermal Management
Speaker: Yen-Ting Wang, ECpE Graduate Student
Advisor: Randall L. Geiger, Doluca Professor
Abstract: A temperature to digital converter (TDC) that does not require either a reference generator or an ADC and that exhibits low supply sensitivity, small die area, and low power consumption is introduced. A prototype circuit designed to support power management applications over the [60 oC, 90 oC] temperature range was implemented in an IBM 0.13μm CMOS process with a 1.2V power supply for use as either a temperature trigger or a digital thermometer. The total silicon area for the TDC is only .0025mm2. Measurement results show the maximum temperature error over this range with a single-temperature trim and batch calibration is less than 0.6oC.