Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1981-12-07
1984-03-27
Anagnos, Larry N.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307304, H03L 100, H03K 3354
Patent
active
044396929
ABSTRACT:
A semiconductor circuit supplies a substrate back bias voltage that is feedback controlled as a function of the sum of the positive threshold voltage of one field-effect transistor (FET) and the negative threshold voltage of a second FET. Preferably, one of the FET's is an enhancement-mode device, and the other is a like-polarity depletion-mode device. This arrangement enables the bias voltage to vary from chip to chip in such a manner as to speed up the logic gates on a chip containing the slowest gates and to slow down the logic gates on a chip containing the fastest logic gates, thereby decreasing the chip-to-chip spread in gate propagation delay and average power dissipation. The worst-case noise margin increases slightly.
REFERENCES:
patent: 3806741 (1974-04-01), Smith
patent: 4229667 (1980-10-01), Heimbigner et al.
patent: 4322675 (1982-03-01), Lee et al.
patent: 4336466 (1982-06-01), Sud et al.
patent: 4344003 (1982-08-01), Harmon et al.
patent: 4388537 (1983-06-01), Kanuma
Frantz, "Threshold Voltage Control for N-Channel MOSFET Devices", IBM Tech. Disl. Bull., vol. 12, No. 12, p. 2078, May 1970.
S. Chen et al., "Feedback Substrate Bias Generator", IBM Technical Disclosure Bulletin, vol. 23, No. 5, Oct. 1980, pp. 1930-1931.
Beekmans Jan J. P. M.
Hughes John B.
Anagnos Larry N.
Bertelson David R.
Mayer R.
Meetin R.
Oisher J.
LandOfFree
Feedback-controlled substrate bias generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Feedback-controlled substrate bias generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feedback-controlled substrate bias generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1757657