Reference voltage generator of a band-gap regulator type used in

Details Reference voltage generator of a band-gap regulator type used in Reference voltage generator of a band-gap regulator type used in

1993-12-09

1996-10-22

Sterrett, Jeffrey L.

Electricity: power supply or regulation systems

Self-regulating

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

323316, G05F 316

Patent

active

055680453

ABSTRACT:
A reference voltage generator of the so-called band-gap regulator type is disclosed, which includes a pair of bipolar transistors, a resistor circuit coupled to the bipolar transistors to make them operative in different current densities from each other to thereby produce a voltage relative to a difference in base-emitter voltage between the transistors, and an operational amplifier coupled to receive the voltage to control a current flowing through the resistor circuit, and further includes a level shifter inserted between the resistor circuit and the operational amplifier to receive and shift the voltage from the resistor circuit, the level shifter thereby shifting the voltage to produce a level-shifted voltage and the operational amplifier receiving the level-shifted voltage.

REFERENCES:
patent: 4458200 (1984-07-01), Geller
patent: 4924113 (1990-05-01), Schade
patent: 4931718 (1990-06-01), Zitta
patent: 4978868 (1990-12-01), Giordano et al.
patent: 5144223 (1992-09-01), Gillingham
patent: 5153500 (1992-10-01), Yamamoto et al.
patent: 5432432 (1995-07-01), Kimura
"Operational Amplifiers and Voltage Regulators", IEEE International Solid-State Circuits Conference, vol. 28, Coral Gables, Florida, USA, Wrathall, Feb. 1985, pp. 144-145.

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