Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Patent
1994-11-14
1996-11-05
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
327281, 327541, H03K 513, H03K 1728
Patent
active
055721591
ABSTRACT:
A voltage-controlled delay element utilizes a current-starved inverter configuration with a feedback path that ensures a rapid discharge of the storage node to ground once the desired delay time has elapsed. The circuit comprises a circuit path for charging the storage node (preferably rapidly), a first pull-down path capable of discharging the storage node at a rate determined by the control voltage, a second pull-down path capable of rapidly discharging the storage node, an output inverter, and a feedback connection between the output terminal of the output inverter and the second pull-down path to rapidly discharge the storage node when the output voltage starts rising. The circuit further comprises a means for programmably adjusting the delay in response to logic signals.
REFERENCES:
patent: 4797586 (1989-01-01), Traa
patent: 5012142 (1991-04-01), Sonntag
patent: 5144173 (1992-09-01), Hui
patent: 5306971 (1994-04-01), McCune
patent: 5334891 (1994-08-01), Marbot
patent: 5412336 (1995-05-01), Barrett, Jr. et al.
Callahan Timothy P.
NexGen, Inc.
Shin Eunja
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