Input stage resistant against high voltage swings

Details Input stage resistant against high voltage swings Input stage resistant against high voltage swings

2006-11-14

2006-11-14

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S313000, C327S318000

Reexamination Certificate

active

07135908

ABSTRACT:
An input stage includes a signal input (IN) for receiving an input signal s(t) and a digital input stage (15) designed for operation at a supply voltage (VDD). The input stage (15) includes CMOS transistors, which are sensitive to voltages across transistor nodes going beyond a voltage limit (Vmax) and an input (IINV). Voltage limiting circuitry (B) is arranged between the signal input (IN) and the input (IINV). The voltage limiting circuitry (B) includes an input switch (ns) controllable by the state of the input signal s(t), and limit voltages at the input (IINV) to the supply voltage (VDD). In addition, over-voltage protection (A) is provided between the signal input (IN) and the supply voltage (VDD). The circuitry for over-voltage protection (A) includes at least one active circuit element arranged so as to mimic part of a zener function.

REFERENCES:
patent: 4858055 (1989-08-01), Okitaka
patent: 5574395 (1996-11-01), Kusakabe
patent: 6181193 (2001-01-01), Coughlin, Jr.
patent: 6291288 (2001-09-01), Huang et al.
NN880596, “Overvoltage Protection Circuit”, IBM Technical Disclosure Bulletin, IBM Corp., US, vol. 30, No. 12, May 1988, p. 96-97.
“Overvoltage Protection Circuit”, IBM Technical Disclosure Bulletin, vol. 30, No. 12, May 1, 1988, pp. 96-97.

Affiliated with

Also associated with

Rating

Input stage resistant against high voltage swings does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Input stage resistant against high voltage swings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Input stage resistant against high voltage swings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3675632