Title:
【発明の名称】電流源回路
Document Type and Number:
Japanese Patent JP2825396
Kind Code:
B2
Abstract:
A small value current source circuit utilized in bipolar integrated circuits. A reference potential is level-shifted by a first level shift circuit and applied to one input of a differential amplifier. The reference potential is also level-shifted by a second level shift circuit and applied to the other input of the differential amplifier. A constant current source circuit supplies currents both proportional to the currents flowing in the differential amplifier and of mutually different values to the first and second level shift circuits. The differential amplifier amplifies the difference of the input voltages and produces an output current.
Inventors:
AOKI HIDEHIKO
Application Number:
JP16056892A
Publication Date:
November 18, 1998
Filing Date:
June 19, 1992
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
H03F3/45; G05F3/26; H03F3/343; H03F3/347; (IPC1-7): H03F3/45; H03F3/343
Domestic Patent References:
| JP62194714A | ||||
| JP5634207A | ||||
| JP58158515U |
Attorney, Agent or Firm:
Togawa Hideaki