Title :
A Sub-1ppm/°C high-order curvature-compensated bandgap reference
Author :
Li, Yan ; Wu, Jin ; Huang, Zhiqi ; Gao, Zongli
Author_Institution :
Inst. of Integrated Circuit, Southeast Univ., Nanjing
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
Based on the principle of piecewise compensation, a modified high-order compensation technique with adaptive feedback control scheme for bandgap reference is proposed. This method focuses on forming multiple local extrema of the curve of reference voltage instead of single valley or peak in the entire operating temperature range, which significantly improves the temperature independence. The circuitry is simulated in CSMC 0.6 mum CMOS process, and it has a temperature coefficient in the -55degC to 105degC range of 0.46ppm/degC (average) with power supply current lower than 0.2 muA.
Keywords :
CMOS integrated circuits; adaptive control; circuit simulation; compensation; feedback; piecewise linear techniques; reference circuits; CMOS process; CSMC; adaptive feedback control scheme; circuit simulation; high-order compensation technique; high-order curvature-compensated bandgap reference; multiple local extrema; operating temperature range; piecewise compensation; power supply current; reference voltage; single valley; temperature coefficient; Adaptive control; CMOS process; Circuit simulation; Current supplies; Feedback control; Photonic band gap; Power supplies; Programmable control; Temperature distribution; Voltage;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4746242
