Variable delay circuit

Details Variable delay circuit Variable delay circuit

1997-03-31

1998-11-03

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

327276, 327264, 327288, H03H 1126

Patent

active

058314652

ABSTRACT:
A variable delay circuit for arbitrarily change of a signal delay helps easily attain a desired resolution with a high precision, which has been difficult due to device process dependence of a voltage control circuit applying a voltage to a CMOS circuit. A variable voltage controller is provided between a power source and a CMOS circuit propagating a signal such that a delay time of signal propagation is supervised by controlling the voltage at a connecting point in the variable voltage controller. The controller includes two MOS transistors and an npn transistor, which solves the process dependence and hence leads to a low power consumption and a high resolution.

REFERENCES:
patent: 4473762 (1984-09-01), Iwahashi et al.
patent: 5121014 (1992-06-01), Huang
patent: 5446417 (1995-08-01), Korhonen et al.
patent: 5594391 (1997-01-01), Yoshizawa
patent: 5684423 (1997-11-01), Koyashiki et al.
patent: 5708396 (1998-01-01), Mizuno

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