Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2008-05-13
2008-05-13
Nguyen, Matthew V. (Department: 2838)
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
C327S539000
Reexamination Certificate
active
07372244
ABSTRACT:
The invention provides a temperature reference circuit that is adapted to provide a ΔVbeof sufficiently large value that no amplification is required, and therefore any offset contribution is not gained. Using a stacked arrangement of three pairs of transistors, the invention reduces the requirement for multiple resistors within a circuit and can therefore minimize errors due to resistor matching and value. By driving at least some of the transistors with a proportional to absolute temperature (PTAT) current it is possible to ensure that the ΔVbeas a temperature sensitive variable.
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Analog Devices Inc.
Nguyen Matthew V.
Wolf Greenfield & Sacks P.C.
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