Semiconductor integrated circuit having a digital circuit

Details Semiconductor integrated circuit having a digital circuit Semiconductor integrated circuit having a digital circuit

1991-06-18

1993-07-27

James, Andrew J.

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

257378, 257691, H01L 2702

Patent

active

052313000

ABSTRACT:
In a semiconductor integrated circuit, a digital circuit section and an analog circuit section are formed on a substrate. A pair of first power source lines connects a circuit element in the digital circuit section to a power source, while a pair of second power source lines connects a substrate region in the digital circuit section to the power source. The pair of second power source lines is formed separately from the pair of first power source lines in the digital circuit section. The substrate region in the digital circuit section is surrounded by a guard ring well, to which one of the pair of second power source lines is connected.

REFERENCES:
patent: 4442529 (1984-04-01), Ahuja et al.
patent: 4727518 (1988-02-01), Madland
patent: 5014105 (1991-05-01), Hata et al.
patent: 5060044 (1991-10-01), Tomassetti
patent: 5079613 (1992-01-01), Sawada et al.
patent: 5099239 (1992-03-01), Bruce et al.
V. L. Rideout an dL. Wissel, "Selective Substrate Biasing for CMOS Circuits", IBM Technical Disclosure Bulletin, vol. 27, No. 6, p. 3344, Nov. 1984.

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