Title :
A CMOS current reference based on generating PTC currents
Author_Institution :
Fac. of Electron., Telecommun. & Inf. Technol., “Gh. Asachi” Tech. Univ. of Iasi, Iasi, Romania
Abstract :
A CMOS current reference circuit without resistors is described. The output current is obtained by the difference between currents with positive temperature coefficients (PTC). The circuit is designed in 65 nm CMOS standard process, operates in the temperature range [-40, +140] °C with supply voltage from 2.2 V to 2.8 V (2.5 V nominal) and generates 1 μA reference current. It has 10.5 ppm/°C temperature coefficient, 0.95 nA/V line sensitivity and -190 dB power supply rejection ratio (PSRR) at low frequencies.
Keywords :
CMOS integrated circuits; reference circuits; CMOS current reference circuit; PSRR; PTC current generation; complementary metal oxide semiconductor; current 1 muA; positive temperature coefficient; power supply rejection ratio; resistor; size 65 nm; voltage 2.2 V to 2.8 V; CMOS integrated circuits; Capacitors; MOSFET; Sensitivity; Temperature distribution; Temperature sensors;
Conference_Titel :
Signals, Circuits and Systems (ISSCS), 2015 International Symposium on
Conference_Location :
Iasi
Print_ISBN :
978-1-4673-7487-3
DOI :
10.1109/ISSCS.2015.7203927
