Temperature-sensitive voltage divider

Details Temperature-sensitive voltage divider Temperature-sensitive voltage divider

1980-01-18

1981-10-13

Shoop, William M.

Electricity: power supply or regulation systems

Self-regulating

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

323303, 307310, G05F 320

Patent

active

042950880

ABSTRACT:
A temperature-sensitive voltage divider for monolithic i.c.'s using singly and doubly diffused resistors avoids the problems with tracking their resistance characteristics owing to diffusion process variations. This is done by using the pinch resistor in conjunction with the base-emitter circuit of a bipolar transistor arranged in common-collector amplifier configuration. The impedance transformation properties of the transistor ease the problems of scaling otherwise encountered in many potential divider arrangements of supply and doubly diffused resistors. The utility of the voltage divider is illustrated in the shunt regulation of the operating voltage of an AM radio receiver.

REFERENCES:
patent: 3715609 (1973-02-01), Hallen
patent: 3828241 (1974-08-01), Horichi
patent: 3851190 (1974-11-01), Hongu et al.
patent: 4173734 (1979-11-01), Hirasawa et al.
International Solid State Circuits Conference Digest of Technical Papers, pp. 100, 101, 1963.
Integrated Electronics, H.C. Lin, pp. 359-362, 1967, Holden-Day Publishers.
Fairchild Semiconductor Linear Integrated Circuits Applications Handbook, pp. 15-16.

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