Title:
基準電圧生成回路
Document Type and Number:
Japanese Patent JP5801271
Kind Code:
B2
Abstract:
A reference voltage generating circuit comprises a pair of variable resistors connected to a pair of bipolar transistors. A differential amplifier amplifies the band gap voltage difference between the bipolar transistors and outputs a reference voltage to an output terminal. An output stage resistor is connected to the output terminal and a resistance dividing circuit. The generating circuit includes temperature compensating circuits that receive tap voltages from resistance dividing circuit and a current proportional to the temperature, then output correction currents. The generating circuit additionally includes a current mirror circuit that outputs a mirror current depending on each correction current. The reference voltage generating circuit thus corrects the temperature dependence of the reference voltage.
Inventors:
Ryuji Fujime
Morikawa Masaaki
Morikawa Masaaki
Application Number:
JP2012209391A
Publication Date:
October 28, 2015
Filing Date:
September 24, 2012
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G05F3/16; G05F3/30
Domestic Patent References:
| JP2012212352A |
Foreign References:
| US7420359 | ||||
| US5767664 | ||||
| US6218822 |
Other References:
A. PAUL BROKAW,A Simple Three-Terminal IC Bandgap Reference,IEEE JOURNAL OF SOLID-STATECIRCUITS,1974年12月,VOL.SC-9, NO. 6,P.388 - P.393
Attorney, Agent or Firm:
Amagi International Patent Office