Fixed-interval timing circuit and method

Details Fixed-interval timing circuit and method Fixed-interval timing circuit and method

1994-11-08

1996-11-26

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

327227, H03K 908

Patent

active

055789528

ABSTRACT:
A system and method for generating a signal having a reliable, fixed duration and/or delay as a function of relative, not absolute, device characteristics. That is to say, the time period of the generated signal is determined as a ratio of one device's operating characteristics to another device's operating characteristics. In particular, the invention provides a fixed time signal as a function of the relative values of two capacitive elements that have a known ratio of capacitance with respect to each other. The invention is particularly useful when implemented upon an integrated circuit, as standard fabrication techniques for such circuits allow relative device characteristics to be held to relatively tight tolerances.

REFERENCES:
patent: 5331208 (1994-07-01), Meyer
patent: 5379321 (1995-01-01), Girmay

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