Band-gap reference voltage circuit with feedback to reduce commo

Details Band-gap reference voltage circuit with feedback to reduce commo Band-gap reference voltage circuit with feedback to reduce commo

1989-02-17

1990-01-30

Salce, Patrick R.

Electricity: power supply or regulation systems

Self-regulating

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

323313, G05F 316

Patent

active

048975958

ABSTRACT:
A relates to a band-gap reference-voltage arrangement includes a MOS differential amplifier (OA2) having two inputs and one output. A first bipolar transistor (Q3) has its base/emitter path coupled between one input of the differential amplifier and a specific junction point and has an emitter-collector path arranged in a first current path for carrying a first current. A second bipolar transistor (Q4) has its base/emitter path connected in series with a resistor (R6) between the other input of the differential amplifier and said junction point and has its emitter-collector path arranged in a second current path for carrying a second current. First and second transistors (P1), P2) supply said first and second currents to the first and second current paths. A feedback path is provided for feeding back the signal from the output of the differential amplifier to the first junction point and comprises a third transistor (Q5) whose base-emitter path is connected between said junction point and the output of the differential amplifier.

REFERENCES:
patent: 4071813 (1978-01-01), Dobkin
patent: 4249122 (1981-02-01), Widlar
patent: 4287439 (1981-09-01), Leuschner
patent: 4317054 (1982-02-01), Caruso et al.
patent: 4380706 (1983-04-01), Wrathall
Ye et al.; "Bandgap Voltage Reference Source in CMOS Technology"; Electronics Letters, Jan. 7, '82, vol. 18, No. 1.

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