A low voltage CMOS constant current-voltage reference circuit

Author

Nissinen, Ilkka ; Kostamovaara, Juha

Author_Institution

Dept. of Electr. & Inf. Eng., Oulu Univ., Finland

Volume

1

fYear

2004

fDate

23-26 May 2004

Abstract

The proposed CMOS current-voltage reference circuit consists of a traditional bandgap circuit based on the use of PMOS transistors in weak inversion. Its current is stabilized by an on-chip resistor with positive temperature coefficient. The voltage reference is produced by compensating the positive temperature coefficient of a resistor by the negative temperature coefficient of the diode connected PMOS transistor by driving the constant current of the current reference through them. The simulated temperature coefficients of the voltage and the current were less than 85 ppm/°C and 54 ppm/°C, respectively, in the worst-case simulation over the temperature range of -10°C to 70°C without trimming, and the supply-voltage coefficients of the voltage and current were 0.16% over the supply voltage range of 1.1 V to 2.2 V.

Keywords

CMOS integrated circuits; circuit simulation; energy gap; low-power electronics; reference circuits; resistors; transistor circuits; -10 to 70 C; 1.1 to 2.2 V; PMOS transistors; bandgap circuit; constant current-voltage reference circuit; low voltage CMOS; on-chip resistor; supply-voltage coefficients; temperature coefficient; weak inversion; worst-case simulation; Bipolar transistors; Circuits; Diodes; Low voltage; MOSFETs; Photonic band gap; Resistors; Temperature dependence; Temperature distribution; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on

Print_ISBN

0-7803-8251-X

Type

conf

DOI

10.1109/ISCAS.2004.1328211

Filename

1328211