System and method for generating a reference voltage

Details System and method for generating a reference voltage System and method for generating a reference voltage

2011-06-14

2011-06-14

Vu, Bao Q (Department: 2838)

Amplifiers

With periodic switching input-output

C330S258000, C330S257000

Reexamination Certificate

active

07961041

ABSTRACT:
In one embodiment, a circuit having a chopper stabilized amplifier and a network coupled in feedback with the chopper stabilized amplifier is disclosed. The circuit also has a plurality of switches coupled to an output of the chopper stabilized amplifier, and a summing network coupled to the plurality of switches. Ones of the plurality of switches are coupled to ones of a plurality of the summing network inputs.

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Jiang, Y., et al., “A Low Voltage Low 1/f Noise CMOS Bandgap Reference,” IEEE, 2005, pp. 3877-3880.
Lian-Xi, L., et al., “A High Accuracy Bandgap Reference with Chopped Modulator to Compensate MOSFET Mismatch,” IEEE Proceedings of the 18th International Conference on VLSI Design held jointly with the 4th International Conference on Embedded Systems Design (VLSID'05), 2005, 4 pages.
Sanduleanu, M.A.T., et al., “Accurate low power bandgap voltage reference in 0.5mm CMOS technology,” Electronic Letters, May 14, 1998, vol. 34 No. 10, p. 1025.

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