Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1996-11-25
1999-09-07
Cunningham, Terry D.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327540, 323312, G05F 302
Patent
active
059492767
ABSTRACT:
An adjustable bias voltage generator included in a semiconductor IC device utilizes fabrication factory-programmable fuses and connectors for enabling bias adjustment. The generator utilizes factory-programmable fuses and connectors for implementing bias adjustment. The generator includes pull-up logic that includes a number of voltage pull-up elements for connection to a system power supply voltage. Pull-down logic includes a number of voltage pull-down elements for connection to a system ground voltage. A voltage divider is connected to the pull-up logic and the pull-down logic for generating the bias voltage. A number of fuses, each connected to a corresponding one of the pull-down elements and for connection to the system ground voltage, is used for selectively connecting the pull-down elements to the system ground voltage to enable pull-down thereof. A number of connectors, some connected to a corresponding one of the pull-up elements and for connection to the system power supply voltage, and others connected to a corresponding one of the pull-down elements and for connection to the system ground voltage, may be used for selectively connecting the pull-up or pull-down elements to the system power supply voltage or system ground voltage, to enable pull-up and pull-down thereof, respectively. The fuses and connectors enabling control of the bias voltage output by the generator are implemented in the top metallization layer of the IC device.
REFERENCES:
patent: 4868416 (1989-09-01), Fitzpatrick et al.
patent: 5081380 (1992-01-01), Chen
patent: 5391979 (1995-02-01), Kajimoto et al.
patent: 5448159 (1995-09-01), Kojima et al.
patent: 5459423 (1995-10-01), Nozawa et al.
patent: 5675280 (1997-10-01), Nomura et al.
Cunningham Terry D.
United Microelectronics Corp.
LandOfFree
Adjustable bias voltage generating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable bias voltage generating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable bias voltage generating apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1807830