Variable delay circuit

Details Variable delay circuit Variable delay circuit

1996-01-11

1997-09-16

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

327270, 327276, H03K 513

Patent

active

056684916

ABSTRACT:
A variable delay circuit includes a gate chain of first to n-th delay gates (n is an integer larger than 2) connected in series to each other via delay gate wirings having respective wiring lengths, the first delay gate receiving an input signal for delay; first to n-th separator gates to which the outputs of the first to n-th delay gates are input, respectively; first to n-th separator gate wirings having wiring lengths successively shortened from the first to n-th separator gate, first ends respectively connected to the first to n-th separator gates, and second ends connected to an n:1 selector, for selecting one of the outputs of the first to n-th separator gates in according with a select signal, and a select signal generating circuit for controlling the n:1 selector. The variable delay circuit has no loss of resolution due to parasitic capacitance of the delay gate wirings.

REFERENCES:
patent: 5179438 (1993-01-01), Morimoto
patent: 5349612 (1994-09-01), Guo et al.
patent: 5355027 (1994-10-01), Shimada et al.
patent: 5428309 (1995-06-01), Yamauchi et al.
Patent Abstracts of Japan, E-372, vol. 10, No. 5, Jan. 10, 1986.

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