Built-in current sensor for IDDQ monitoring

Details Built-in current sensor for IDDQ monitoring Built-in current sensor for IDDQ monitoring

1996-07-29

1998-09-15

Nguyen, Vinh P.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

G01R 3126

Patent

active

058084762

ABSTRACT:
An apparatus for measuring the current of a CMOS circuit includes a reference current generator to generate a reference current, a first current mirror to mirror the reference current, a second current mirror to mirror the current consumed by the CMOS circuit, an inverter to compare the above two mirrored currents and generate a signal to indicate which current is larger, and a multiplexer to switch between the normal circuit operation mode and the test mode. By this apparatus, it is possible to measure rapidly and accurately whether the CMOS circuit consumes an abnormally large current, thereby determining whether the CMOS circuit contains defects. This apparatus is based on the current-mode approach, hence can provide a high speed signal processing capability and has lower sensitivity to parameter deviation caused by process or operating temperature variations. It also provides scaleable sensing resolutions and programmable current reference.

REFERENCES:
patent: 4631724 (1986-12-01), Shimizu
patent: 5025344 (1991-06-01), Maly et al.
patent: 5057774 (1991-10-01), Verhelst
patent: 5111136 (1992-05-01), Kawashima
patent: 5321354 (1994-06-01), Ooshima et al.
patent: 5332973 (1994-07-01), Brown et al.
patent: 5386158 (1995-01-01), Wang
patent: 5392293 (1995-02-01), Hsue
patent: 5519333 (1996-05-01), Righter

Affiliated with

Also associated with

Rating

Built-in current sensor for IDDQ monitoring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Built-in current sensor for IDDQ monitoring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Built-in current sensor for IDDQ monitoring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-92201