Digital-to-analog converter and method of calibrating

Details Digital-to-analog converter and method of calibrating Digital-to-analog converter and method of calibrating

1997-04-07

1998-10-20

Hoff, Marc S.

Coded data generation or conversion

Converter calibration or testing

341118, 341144, 341133, H03M 110

Patent

active

058253173

ABSTRACT:
A ferroelectric transistor (72) is programmed with a gate voltage that shifts a threshold voltage of the ferroelectric transistor (72). The shifted threshold voltage generates a correction current (.DELTA.I.sub.(N-1)) in a combination circuit (52) that trims an output voltage of a DAC trim circuit (50). A ferroelectric material (32) of the ferroelectric transistor (72) stores a charge in accordance with a programming voltage and allows a dynamic adjustment of the correction current (.DELTA.I.sub.(N-1)) that is used to modify the output voltage of the DAC trim circuit (50).

REFERENCES:
patent: 5153592 (1992-10-01), Fairchild et al.
patent: 5450084 (1995-09-01), Mercer
patent: 5541870 (1996-07-01), Mihara et al.
"Bipolar and MOS Analog Integrated Circuit Design", Alan Grebene, John Wiley & Sons, Singapore, 1991, pp. 818-823.

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