Circuit and method supporting a one-volt bandgap architecture

Details Circuit and method supporting a one-volt bandgap architecture Circuit and method supporting a one-volt bandgap architecture

2007-05-23

2009-12-08

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S907000

Reexamination Certificate

active

07629785

ABSTRACT:
A system includes a transistor coupled to a voltage rail, a first resistor coupled in series with the transistor, and a second resistor coupled in series with the first resistor. The system also includes a bandgap reference circuit operable to generate a bandgap reference voltage of less than 1.2 volts (such as one volt) between the first and second resistors. The bandgap reference circuit includes a diode configured to generate a complementary-to-absolute-temperature (CTAT) voltage and a third resistor configured to generate a first proportional-to-absolute-temperature (PTAT) voltage using a first current. The bandgap reference circuit also includes a current source configured to sink a CTAT current from the first current to generate a second current and a fourth resistor configured to generate a second PTAT voltage using the second current. A sum of the CTAT voltage, the first PTAT voltage, and the second PTAT voltage is less than 1.2 volts.

REFERENCES:
patent: 6294902 (2001-09-01), Moreland et al.
patent: 6426669 (2002-07-01), Friedman et al.
patent: 6954059 (2005-10-01), MacLean
patent: 7053694 (2006-05-01), Ozawa
patent: 7208930 (2007-04-01), Tran et al.
patent: 7224210 (2007-05-01), Garlapati et al.
patent: 7253597 (2007-08-01), Brokaw
Hongchin Lin, et al., “An Area-Efficient CMOS Band-Gap Reference Circuit For Low Supply Voltages”, 2002 IEEE, p. 663-666.
Hironori Banba, et al., “A CMOS Band-Gap Reference Circuit with Sub 1V Operation”, 1998 Symposium on VLSI Circuits Digest of Technical Papers, p. 228-229.
“LM4140 High Precision Low Noise Low Dropout Voltage Reference”, National Semiconductor, Feb. 2005, 15 pages.
A. Cabrini et al., “A 1 V, 26 μW Extended Temperature Range Band-gap Reference in 130-nm CMOS Technology,” Proceedings of ESSCIRC, Grenoble, France, 2005 IEEE, pp. 503-506.
Paul Brokaw, “Alternative Bandgaps and Applications,” Analog Devices, 3 pages.
Hidehiko Suzuki et al., “System and Method for Minimizing Power Consumption of a Reference Voltage Circuit,” U.S. Appl. No. 10/839,726, filed May 5, 2004.
Frank DeStasi, “System and Method for Providing a Low Voltage Bandgap Reference Circuit,” U.S. Appl. No. 11/504,976, filed Aug. 16, 2006.
Paul Michael Henry, “System and Method for Providing An Offset Voltage Minimization Circuit,” U.S. Appl. No. 11/124,758, filed May 9, 2005.
David J. Megaw, “Circuit and Method for Reducing Reference Voltage Drift in Bandgap Circuits,” U.S. Appl. No. 10/924,661, filed Aug. 24, 2004.

Affiliated with

Also associated with

Rating

Circuit and method supporting a one-volt bandgap architecture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and method supporting a one-volt bandgap architecture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method supporting a one-volt bandgap architecture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4149281