Voltage reference circuit

Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...

Reexamination Certificate

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C323S315000, C323S316000, C327S539000

Reexamination Certificate

active

07626374

ABSTRACT:
A reliable start-up circuit for starting a bandgap type voltage reference generator which ensures that the bandgap reference cell will operate at a stable operating point before the start-up circuit is disabled.

REFERENCES:
patent: 6150872 (2000-11-01), McNeill et al.
patent: 6160391 (2000-12-01), Banba et al.
patent: 6710641 (2004-03-01), Yu et al.
patent: 6784652 (2004-08-01), Aude
patent: 6906581 (2005-06-01), Kang et al.
patent: 6998902 (2006-02-01), Sugimura
patent: 7148672 (2006-12-01), Holmes
patent: 7224209 (2007-05-01), Hsu
patent: 7531999 (2009-05-01), Chang
patent: 2003-263232 (2003-09-01), None
M. Waltari, et al., “Reference Voltage Driver for Low-Voltage CMOS A/D Converters,”Proceedings of ICECS 2000, vol. 1, pp. 28-31, 2000.
P. Malcovati, et al., “Curvature-Compensated BiCMOS Bandgap with 1-V Supply Voltage,”IEEE J. Solid-State Circuits, vol. 36, pp. 1076-1081, Jul. 2001.
A. Pierazzi et al., “Band-Gap References for near 1-V operation in standard CMOS technology,”IEEE 2001 Custom Integrated Circuit Conference, pp. 463-466, 2001.
K. N. Leung et al., “A Sub-1-V 15-ppm/° C. CMOS Bandgap Voltage Reference Without Requiring Low Threshold Voltage Device,”IEEE J. Solid-State Circuits, vol. 37, pp. 526-530, Apr. 2002.
A. Boni, “Op-Amps and Start-up Circuits for CMOS Bandgap References With Near 1-V Supply,”IEEE J. Solid-State Circuits, vol. 37, pp. 1339-1343, Oct. 2002.
H. Banba et al., “A CMOS Bandgap Reference Circuit with Sub-1-V Operation”IEEE J. Solid-State Circuits, vol. 34, No. 5, May 1999.

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