Title :
A CMOS voltage reference for ultra low-voltage applications
Author :
De Carvalho Ferreira, L.H. ; Pimenta, Tales Cleber
Author_Institution :
Univ. Fed. de Itajuba, Itajuba
Abstract :
This work describes a CMOS voltage reference using only resistors and transistors working in weak inversion, without any bipolar transistors. The circuit operation is similar to bandgap references, but the voltage reference is given by the threshold voltage of an NMOS transistor. The circuit was implemented in a standard 0.35 mum TSMC CMOS process. The circuit generates a reference of 514 mV for a power supply of just 900 mV and presents a 20 ppm/degC variation for the range of 0degC a 100degC.
Keywords :
CMOS integrated circuits; bipolar transistors; low-power electronics; resistors; CMOS voltage reference; NMOS transistor; bandgap reference; bipolar transistor; resistor; size 0.35 mum; temperature 0 degC to 100 degC; ultra low-voltage application; voltage 514 mV; voltage 900 mV; Bipolar transistors; CMOS process; Circuits; MOSFETs; Photonic band gap; Power supplies; Resistors; Temperature dependence; Temperature distribution; Threshold voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2005. ICECS 2005. 12th IEEE International Conference on
Conference_Location :
Gammarth
Print_ISBN :
978-9972-61-100-1
Electronic_ISBN :
978-9972-61-100-1
DOI :
10.1109/ICECS.2005.4633385
