Internal voltage generating circuit

Details Internal voltage generating circuit Internal voltage generating circuit

2009-09-29

2011-10-18

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S536000

Reexamination Certificate

active

08040176

ABSTRACT:
A temperature-compensated internal voltage having a desired compensation range is generated with a sufficient controllability and stability. A temperature characteristic adding circuit generates a standard voltage having temperature dependence from a reference voltage not having temperature dependence. The standard voltage is A/D-converted and then added with standard code information (TN_VREF <4:0>) which specifies the level of the internal voltage. The additional value (TN_VREF2<4:0>) is D/A-converted to generate an offset voltage having temperature dependence. The internal voltage of a desired level is generated based on the offset voltage.

REFERENCES:
patent: 6169442 (2001-01-01), Meehan et al.
patent: 6774713 (2004-08-01), Watanabe
patent: 6775196 (2004-08-01), Perner et al.
patent: 6888397 (2005-05-01), Tsuchiya
patent: 7443231 (2008-10-01), Chang
patent: 2007/0171956 (2007-07-01), Noguchi
patent: 2004-085384 (2004-03-01), None
patent: 2005-016992 (2005-01-01), None
patent: 2007-192718 (2007-08-01), None

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