Patent
1989-12-20
1991-07-16
Carroll, J.
357236, 357 2313, 357 40, 357 42, H01L 2702, H01L 2968, H01L 2702
Patent
active
050328921
ABSTRACT:
An integrated cirucuit is provided with a depletion mode filter capacitor, which reduces voltage spiking, while at the same time avoiding latchup problems caused by the capacitor. The depletion mode capacitor has a barrier layer which is doped to an opposite conductivity type as the integrated circuit's substrate, achieved by doping to provide an opposite difference from four valence electrons as the substrate. The barrier is formed as a part of a CMOS process, in a manner which avoids additional process steps. The capacitor is formed with one node connected to ground or substrate, and the other node directly to a power bus. The capacitor is located on open space available on the whole siliocn chip (memory as well as logic chip), particularly directly underneath the metal power bus to achieve an on-chip power bus decoupling capacitor wth capacitance in excess of 0.001 .mu.F.
REFERENCES:
patent: 4164751 (1979-08-01), Tasch, Jr.
patent: 4317686 (1982-03-01), Ananad et al.
patent: 4427989 (1984-12-01), Nantha et al.
patent: 4604639 (1988-08-01), Kinoshita
patent: 4670861 (1987-12-01), Shie et al.
patent: 4701884 (1987-10-01), Aoki et al.
patent: 4737830 (1988-04-01), Patel et al.
patent: 4780846 (1988-10-01), Tanabe et al.
patent: 4879631 (1989-11-01), Johnson et al.
Chern Wen-Foo
Duesman Kevin G.
O'Toole James E.
Parkinson Ward M.
Trent Thomas M.
Carroll J.
Micro)n Technology, Inc.
Protigal Stanley N.
LandOfFree
Depletion mode chip decoupling capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Depletion mode chip decoupling capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Depletion mode chip decoupling capacitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-135526