Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2005-09-06
2005-09-06
Nguyen, Long (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S078000, C327S083000
Reexamination Certificate
active
06940318
ABSTRACT:
A stable voltage that is independent of supply voltage is applied to a pair of current sources. A first current source generates a first current that passes through a first resistor, setting a compare-in-put voltage. A source-input voltage is applied to the first current source to vary the first current and the compare-input voltage. A second current source generates a stable current that passes through a second resistor, setting a reference voltage. The compare-input voltage and the reference voltage are applied to inputs of a comparator that generates an output voltage that indicates when the source-input voltage causes the compare-input voltage to rise past the reference voltage. The first and second currents track each other over temperature and process variations and are independent of supply voltage. A more accurate comparison of the source-input voltage is thus made.
REFERENCES:
patent: 4354122 (1982-10-01), Embree et al.
patent: 4734654 (1988-03-01), Fernandez
patent: 4942369 (1990-07-01), Nakagawara et al.
patent: 5519310 (1996-05-01), Bartlett
patent: 5619125 (1997-04-01), Lakshmikumar
patent: 5694072 (1997-12-01), Hsiao et al.
patent: 5739678 (1998-04-01), Nagaraj
patent: 5754039 (1998-05-01), Nishimura
patent: 5815012 (1998-09-01), Rivoir et al.
patent: 5825167 (1998-10-01), Ryat
patent: 5942921 (1999-08-01), Talaga, Jr.
patent: 6414536 (2002-07-01), Chao
patent: 6586984 (2003-07-01), Radke
patent: 6605998 (2003-08-01), Kimura
patent: 6661713 (2003-12-01), Kuo
Auvinen Stuart T.
Nguyen Long
Pericom Semiconductor Corp.
LandOfFree
Accurate voltage comparator with voltage-to-current... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Accurate voltage comparator with voltage-to-current..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accurate voltage comparator with voltage-to-current... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3415841