Design of an All-MOS Temperature Sensor with an 8-bit Incremental Delta-Sigma ADC on a 0.18μm Technology
Authors: Juan Gabriel Briones, Gino Marasigan, Jan Bryan Pascasio, Rachel Marie Dalisay, Joseph Ponce, Donato David, and Alexander Abad
Abstract
This study focused on the design and characterization of a Temperature Sensor with an 8-bit Low-Voltage Incremental Delta-Sigma Analog-to-Digital Converter (ADC). The Proportional to Absolute Temperature (PTAT) part of an All-MOS bandgap voltage reference was utilized as the Temperature Sensor. The design was implemented using 0.18μm CMOS Technology. The temperature sensor and voltage reference operates at 2.5-V supply voltage while the ADC part operates on a low voltage 1-Volt supply. The circuit design can operate from 0°C to 85°C with a temperature coefficient of 0.933mV/°C or 2.5LSB/°C and was implemented and simulated using Synopsys Tools.