Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Patent
1978-03-21
1984-05-08
Pellinen, A. D.
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
323313, G05F 1613, G05F 320
Patent
active
044477848
ABSTRACT:
A pair of transistors, connected as a differential amplifier, is operated so that the transistors run at different current densities. A voltage divider is coupled across a pair of circuit terminals so that a portion of the terminal voltage is coupled to and used to differentially bias the transistors. An amplifier, responsive to the transistors differential output, and coupled to the divider, is used to vary the terminal voltage to force the differential output to zero. The transistor bias voltage thus generated has a positive temperature coefficient of voltage. A forward biased diode, which has a negative temperature coefficient of voltage, is also incorporated into the divider. When the terminal voltage is made equal to the semiconductor bandgap, the two temperature sensitive terms cancel to compensate the reference voltage.
REFERENCES:
patent: 3851241 (1974-11-01), Wheatley, Jr.
patent: 4017788 (1977-04-01), Stepp et al.
patent: 4071813 (1978-01-01), Dobkin
patent: 4088941 (1978-05-01), Wheatley, Jr.
patent: 4103219 (1978-07-01), Wheatley, Jr.
Meijer et al., "An Integrated Bandgap Reference", IEEE Journal of Solid State Circuits, vol. SC-11, No. 3, pp. 403-406, Jun. 1976, I022-7603-3.
Lawton, "A 39.2 Mhz A.M.I.F. System", European Solid State Circuits Conference, Canterbury, Kent, England, 2-5, Sep. 1975, pp. 38, 39, S62460012F.
National Semiconductor Corporation
Pellinen A. D.
Pollock Michael J.
Winters Paul J.
Woodward Gail W.
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