Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2008-08-07
2010-12-28
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S534000
Reexamination Certificate
active
07859322
ABSTRACT:
An internal power-supply circuit generates an internal voltage based on a reference voltage, and has an external-power-supply terminal to which an external power-supply voltage having a first potential is applied during a normal operation and an external power-supply voltage having a second potential that is higher than the first potential is applied during a burn-in acceleration test, a reference-voltage generating unit for generating the reference voltage from the external power-supply voltage, and an internal-voltage generating unit for generating the internal voltage based on the reference voltage. The reference-voltage generating unit generates, during the normal operation, a normal reference voltage that is independent of the potential of the external power-supply voltage and generates, during the burn-in acceleration test, a first burn-in reference voltage that is dependent on the potential of the external power-supply voltage and a second burn-in reference voltage that has the same potential as the normal reference voltage.
REFERENCES:
patent: 5554953 (1996-09-01), Shibayama et al.
patent: 5656944 (1997-08-01), Choi
patent: 5856756 (1999-01-01), Sasahara et al.
patent: 6072742 (2000-06-01), Ooishi
patent: 6333879 (2001-12-01), Kato et al.
patent: 7539072 (2009-05-01), Kang
patent: 2004/0012996 (2004-01-01), Tanizaki
patent: 05-136680 (1993-06-01), None
patent: 06-208791 (1994-07-01), None
patent: 2004-55001 (2004-02-01), None
Arent & Fox LLP
Fujitsu Semiconductor Limited
Le Dinh T.
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