Sub-volt bandgap voltage reference with buffered CTAT bias

Details Sub-volt bandgap voltage reference with buffered CTAT bias Sub-volt bandgap voltage reference with buffered CTAT bias

2011-01-04

2011-01-04

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S316000

Reexamination Certificate

active

07863884

ABSTRACT:
Circuits, methods, and apparatus that provide voltage references having a temperature independent output voltage that is less then the bandgap of silicon. The temperature coefficient and absolute voltage can be independently adjusted. One example generates two voltages, the first of which is proportional-to-absolute temperature and the second of which is complementary-to-absolute temperature. These voltages are placed across a first resistor. The first resistor is further connected to a second resistor to form a resistor divider. The resistor divider provides a reduced voltage that is below that bandgap of silicon. The temperature coefficient of the reference voltage provided by the resistor divider can be set by adjusting the first resistor. The absolute voltage provided can be set by adjusting the second resistor.

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