Ultra-low power CMOS cells for temperature sensors

Temperature sensors and voltage references require cells that generate both PTAT (Proportional To Absolute Temperature) and NTC (Negative Temperature Coefficient) voltages. We present a novel theoretical approach based on a quasiconstant current to obtain these voltages in standard CMOS technology using no resistors. A test circuit was fabricated in a 0.8 µm CMOS process. We performed measurements in a 305 K to 375 K temperature range which verify the ex

• Type: Conference
• Year: 2005
• Where: SBCCI
• Authors: Conrado Rossi, Pablo Aguirre
• Keywords: Absolute Temperature, Negative Temperature, SBCCI 2005, Temperature Sensors