Precision floating gate reference temperature coefficient...

Details Precision floating gate reference temperature coefficient... Precision floating gate reference temperature coefficient...

2007-05-22

2007-05-22

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

Reexamination Certificate

active

11129455

ABSTRACT:
A circuit and corresponding method for a precision floating gate voltage reference that uses a feedback loop, conduction of tunnel devices, and a bandgap cell to accurately program a desired charge level on a floating gate and provide a predictable and programmable temperature coefficient parameter for such voltage reference. In one embodiment, a bandgap cell is coupled through a capacitor to the floating gate storage node for providing a voltage source for canceling the temperature coefficient (TC) of the storage capacitor. The circuit and method enables TC to be minimized by either choosing the proper voltage source characteristics or alternatively, by choosing the proper ratio of two capacitors. The bandgap cell can alternatively be designed to have positive TC (PTAT voltage sources) or negative TC (VBE junction).

REFERENCES:
patent: 5059820 (1991-10-01), Westwick
patent: 5352972 (1994-10-01), Pernici et al.
patent: 5563504 (1996-10-01), Gilbert et al.
patent: 5945871 (1999-08-01), Kausel et al.
patent: 6060874 (2000-05-01), Doorenbos
patent: 6147522 (2000-11-01), Rhode et al.
patent: 6366071 (2002-04-01), Yu
patent: 6650175 (2003-11-01), Messager
patent: 6853238 (2005-02-01), Dempsey et al.
patent: 7009373 (2006-03-01), Garavan
patent: 2005/0146377 (2005-07-01), Owen
Song, et al., “A Precision Curvature-Compensated CMOS Bandgap Reference”, IEEE Journal of Solid-State Circuits, vol. sc-18, No. 6, pp. 634-643, Dec. 1983.
Jiang, et al., “Design of Low-Voltage Bandgap Reference Using Transimpedance Amplifier”, IEEE Transactions on Circuits and Systems-II: Analog and Digital Signal Processing, vol. 47, No. 6, pp. 552-555, Jun. 2000.

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