Title:
【発明の名称】温度追尾電圧-電流コンバータ
Document Type and Number:
Japanese Patent JP2002513179
Kind Code:
A
Abstract:
A programmable and precise voltage-to-current converter (a.k.a. current source) that tracks temperature variations is presented. The voltage-to-current converter is implemented by placing a voltage reference circuit between the bases of the two transistors, or alternatively between a diode and a transistor, in a voltage controlled current source circuit which can be adjusted to track temperature variations. In one embodiment, the voltage reference circuit is a programmable digital-to-analog (D/A) converter. In a second embodiment, the voltage reference circuit is a differential amplifier.
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Inventors:
Miller Charles A
Application Number:
JP2000546289A
Publication Date:
May 08, 2002
Filing Date:
April 20, 1999
Export Citation:
Assignee:
Creedance Systems Corporation
International Classes:
G01R31/02; G01R31/316; G05F1/56; G05F3/16; G05F3/26; G01R31/30; G01R31/319; (IPC1-7): G05F3/16; G01R31/02; G01R31/316; G05F3/26
Attorney, Agent or Firm:
Kunio Yamaguchi (1 person outside)