Method and apparatus for deglitching DAC signals

Details Method and apparatus for deglitching DAC signals Method and apparatus for deglitching DAC signals

1995-06-02

1997-07-08

Gaffin, Jeffrey A.

Coded data generation or conversion

Converter compensation

341144, H03M 106

Patent

active

056466200

ABSTRACT:
A DAC deglitch circuit comprising a switch circuit for grounding the DAC output during the DAC's transitional period. The DAC is preferably a current type, although a voltage type is also contemplated. The switch circuit preferably includes a biased transistor circuit receiving the update or hold signal for grounding the output of the DAC during the hold period. The deglitch circuit generally causes a consistent glitch at every transition, which is easily filtered out by a filter circuit. The deglitch circuit is very simple inexpensive and consumes very little space and power.

REFERENCES:
patent: 3412335 (1968-11-01), Risely
patent: 4285051 (1981-08-01), Henneuse
patent: 4584559 (1986-04-01), Penney
patent: 5034744 (1991-07-01), Obinata
patent: 5039872 (1991-08-01), Oldham
patent: 5532629 (1996-07-01), Nagaraj
1993 Applications Reference Manual, Analog Devices, Inc., 1993, pp. 8-208.
Siliconix Low-Power Discretes Databook 1994, ION Associates, Inc. (Jun. 22, 1994), pp. 12-42.

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