CMOS driver circuit having reduced switching noise

Details CMOS driver circuit having reduced switching noise CMOS driver circuit having reduced switching noise

1992-11-16

1993-08-31

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307451, 307572, 307594, H03K 512, H03K 604, H03K 1716, H03K 19003

Patent

active

052412210

ABSTRACT:
In a driver circuit, high- and low-impedance drive means (26 and 28 respectively) operate in parallel to effect a desired output transition. Adaptive control means 32 respond to a threshold value of the output signal (VO) and turn off the low-impedance drive means in the course of the output transition. The low initial output impedance of the driver circuit effects rapid charging of a line capacitance CL, while toward the end of the output transition the higher output impedance of the driver circuit more closely matches the input impedance ZL of a load circuit. This higher impedance dampens ringing and thereby reduces induced supply line noise which is conventionally associated with high-speed driver circuits.

REFERENCES:
patent: 4408135 (1983-10-01), Yuyama et al.
patent: 4570091 (1984-03-01), Yasuda et al.
patent: 4719369 (1988-01-01), Asano et al.
patent: 4731553 (1988-03-01), Van Lehn et al.
patent: 4749882 (1988-06-01), Morgan
patent: 4779013 (1988-10-01), Tanaka
patent: 4785203 (1988-11-01), Nakamura
patent: 4789796 (1988-12-01), Foss
patent: 4818901 (1989-04-01), Young et al.
patent: 4829199 (1989-05-01), Prater
patent: 4855623 (1989-08-01), Flaherty
patent: 4890017 (1989-12-01), Masuda et al.
patent: 4894560 (1990-01-01), Chung
patent: 4959565 (1990-09-01), Knecht et al.
patent: 4975598 (1990-12-01), Borkar
patent: 4985644 (1991-01-01), Okihara et al.
patent: 5057711 (1991-10-01), Lee et al.
patent: 5121013 (1992-06-01), Chuang et al.

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