Title :
CMOS voltage reference with superior-order curvature-correction
Author_Institution :
Fac. of Electron., Telecommun. & Inf. Technol., Univ. Politeh. of Bucharest, Bucharest, Romania
fDate :
June 30 2011-July 1 2011
Abstract :
An original superior-order curvature-corrected voltage reference will be presented. In order to improve the temperature behavior of the circuit, both linear and superior-order curvature-corrections will be implemented. The linear correction is realized using an OVF (Offset Voltage Follower) block, while the superior-order correction is implemented considering a transfer cell for additionally improving the circuit thermal performances. The voltage reference structure presents an extremely low temperature coefficient, being characterized by a low-voltage low-power operation. SPICE simulation confirms the theoretical estimated results, showing a temperature coefficient under 11ppm / K for an extended input range 223K <; T <; 423K and for a supply voltage of 1.8V and a current consumption of about 1μA.
Keywords :
CMOS integrated circuits; low-power electronics; reference circuits; CMOS voltage reference; OVF; SPICE; circuit thermal performance; current 1 muA; linear correction; low-voltage low-power operation; offset voltage follower block; superior-order curvature-correction; temperature behavior; transfer cell; voltage 1.8 V; CMOS integrated circuits; Generators; Integrated circuit modeling; Logic gates; Photonic band gap; Temperature dependence; Temperature distribution;
Conference_Titel :
Signals, Circuits and Systems (ISSCS), 2011 10th International Symposium on
Conference_Location :
lasi
Print_ISBN :
978-1-61284-944-7
DOI :
10.1109/ISSCS.2011.5978740
