Bandgap reference circuits

Details Bandgap reference circuits Bandgap reference circuits

2007-01-23

2007-01-23

Patel, Rajnikant B. (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

C323S273000, C323S907000, C327S543000

Reexamination Certificate

active

11018017

ABSTRACT:
A bandgap reference circuit. In the bandgap reference circuit, a current generator includes a first bipolar junction transistor (BJT) and generates a first positive temperature coefficient current thereby producing a negative temperature coefficient voltage between a base terminal and an emitter terminal of the first bipolar junction transistor. A single-end gain amplifier includes a positive input terminal coupled to the emitter terminal of first the bipolar junction transistor. A first resistor is coupled between the output terminal of the single-end gain amplifier and an output terminal of the bandgap reference circuit to generate a first current. A current-to-voltage converter is coupled to the first resistor to convert the first positive temperature coefficient current and the first current to a bandgap voltage.

REFERENCES:
patent: 5666046 (1997-09-01), Mietus
patent: 5933051 (1999-08-01), Tsuchida et al.
patent: 6060870 (2000-05-01), Seevinck
patent: 6111396 (2000-08-01), Lin et al.

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