Logical circuit reference electric level generating circuitry

Details Logical circuit reference electric level generating circuitry Logical circuit reference electric level generating circuitry

1978-06-30

1979-09-04

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330 51, 330 69, 330 85, 330103, 330252, 330297, H03F 345

Patent

active

041669827

ABSTRACT:
The circuitry is arranged to develop a highly accurate and stable reference electric level voltage and/or current for distribution to a plurality of logical circuits on a semiconductor chip having of the order of a thousand such circuits thereon. An input reference voltage is developed by a source reference circuit and applied to an operational amplifier circuit having "evener" circuitry for substantially equalizing the currents in the input transistors. This evener circuitry is essentially an operational amplifier within an op-amp. It monitors and adjusts feedback voltages. The operational amplifier and evener circuitry drives a reference voltage distribution grid laid out over the semiconductor chip.

REFERENCES:
patent: 3444476 (1969-05-01), Leidich
patent: 3721893 (1973-03-01), Davis
patent: 3868583 (1975-02-01), Krabbe
patent: 4024462 (1977-05-01), Highnote et al.
patent: 4105942 (1978-08-01), Henry
Ogawa et al., "Stabilized Reference Voltage Source", IBM Technical Disclosure Bulletin, vol. 13, No. 9, Feb. 1971, p. 2689.
Mitchell, "Monolithic Current Source"; IBM TDB; vol. 13, No. 12, May 1971, p. 3720.
Azziz, "Current Source Scaling Circuit"; IBM-TDB; vol. 19, No. 5, Oct. 1976, pp. 1709-1710.
Chin, "On-Chip Voltage Regulator"; IBM-TDB; vol. 19, No. 6, Nov. 1976, pp. 2078-2079.

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