Temperature compensated bandgap IC voltage references

Details Temperature compensated bandgap IC voltage references Temperature compensated bandgap IC voltage references

1978-07-27

1981-02-03

Pellinen, A. D.

Electricity: power supply or regulation systems

Self-regulating

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

330297, G05F 320

Patent

active

042491223

ABSTRACT:
Bandgap voltage reference circuits have been developed for integrated circuit applications. Typically, a negative temperature coefficient first voltage is developed related to the base to emitter potential of a transistor. A positive temperature coefficient second voltage related to the difference in base to emitter potential between two transistors operating at different current densities is developed and combined with the first voltage so as to produce a temperature compensated reference voltage. Such first order compensation leaves second order effects uncompensated. In the invention, a third voltage having a suitable temperature coefficient is combined with the first and second voltages so that the resultant reference voltage is compensated to a second order.

REFERENCES:
patent: 3617859 (1971-11-01), Dobkin et al.
patent: 3893018 (1975-07-01), Marley
patent: 3908162 (1975-09-01), Marley et al.
patent: 4088941 (1978-05-01), Wheatley
patent: 4091321 (1978-05-01), Hanna
patent: 4100436 (1978-07-01), van de Plassche
patent: 4103219 (1978-07-01), Wheatley

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