Low current bandgap reference voltage circuit

Details Low current bandgap reference voltage circuit Low current bandgap reference voltage circuit

1993-05-21

1995-09-19

Sterrett, Jeffrey L.

Electricity: power supply or regulation systems

Self-regulating

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

323313, G05F 316

Patent

active

054518601

ABSTRACT:
A bandgap reference voltage circuit adapted for low current applications. A reference voltage is provided as a function of the difference between the V.sub.be voltages of a pair of bipolar transistors scaled by a ratio of the resistances of a pair of MOS transistors, to provide a predetermined reference voltage level. For a given reference voltage circuit size, use of the pair of MOS transistors achieves a low reference current in an integrated circuit, the size of which is far less than that implemented with conventional resistors. Alternatively, for a given reference current, the MOS transistor scaling provides a smaller reference circuit than is otherwise achievable.

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