Reference voltage generating circuit having a temperature charac

Details Reference voltage generating circuit having a temperature charac Reference voltage generating circuit having a temperature charac

1999-07-13

2000-11-07

Kim, Jung Ho

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Fusible link or intentional destruct circuit

327530, H01H 3776

Patent

active

061442488

ABSTRACT:
A reference voltage generating circuit generates a reference voltage having a flat temperature characteristic over a practical temperature range. In a reference voltage transistor pair, a depletion N-channel field effect transistor and an enhancement N-channel field effect transistor are connected in series between a first voltage source and a second voltage source so that the reference voltage is output from a juncture between a gate of the depletion N-channel field effect transistor and a gate of the enhancement N-channel field effect transistor. A temperature characteristic correction circuit is provided to at least one of the depletion N-channel field effect transistor and the enhancement N-channel field effect transistor. The temperature characteristic correction circuit changes temperature sensitivity of the reference voltage by changing an effective gate size of the one of the depletion N-channel field effect transistor and the enhancement N-channel field effect transistor.

REFERENCES:
patent: 4417263 (1983-11-01), Matsuura

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