Method to reduce inductive effects of current variations by...

Details Method to reduce inductive effects of current variations by... Method to reduce inductive effects of current variations by...

2006-05-16

2006-05-16

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Signal transmission integrity or spurious noise override

C327S384000

Reexamination Certificate

active

07046069

ABSTRACT:
Modularized clock decoupling and signal delay management is provided for the purpose of reducing simultaneous binary signal switch-induced inductive voltage transients in lower voltage synchronous semiconductor devices. The voltage levels in low-voltage devices must be tightly maintained for proper transistor logic operations. Signal switching results in current changes on the power net of an IC. Current changes produce inductive voltage transients which propagate throughout the device and which can interfere with signal transmission and device operation. Relatively independent functioning circuits of an integrated circuit are isolated from the chip clock and each isolated circuit module is provided with its own independent, same-frequency, but slightly out-of-phase clock signal. Signal switching within any module is thus occurring out-of-phase with that of all other modules and, as a result, switch-associated voltage transients are limited to those associated with one module's circuits at a time.

REFERENCES:
patent: 5874833 (1999-02-01), Perry et al.
patent: 6732214 (2004-05-01), Cohen et al.

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