EP 0424264 B1 19930120 - CURRENT SOURCE WITH LOW TEMPERATURE COEFFICIENT
Title (en)
CURRENT SOURCE WITH LOW TEMPERATURE COEFFICIENT
Publication
Application
Priority
- FR 8913757 A 19891020
- FR 8913758 A 19891020
Abstract (en)
[origin: EP0424264A1] The invention relates to integrated circuits, and more particularly the manner of producing in these circuits a constant current source which is stable as a function of temperature and of the supply voltage of the integrated circuit. <??>According to the invention, it is proposed to produce a stable current source on the basis of two transistors (Q1, Q2) in parallel, one controlled by a reference voltage source of the "band gap" type (AO, R1, R2, R3, D1, D2) and the other by a wilson mirror (T1, T2, T3, T4). The addition of the currents from the two transistors gives a current which can be much more stable in terms of temperature than the individual currents in each of the transistors. <IMAGE>
IPC 1-7
IPC 8 full level
G05F 3/24 (2006.01)
CPC (source: EP US)
G05F 3/245 (2013.01 - EP US); G05F 3/247 (2013.01 - EP US); Y10S 323/907 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0424264 A1 19910424; EP 0424264 B1 19930120; DE 69000803 D1 19930304; DE 69000803 T2 19930609; US 5103159 A 19920407
DOCDB simple family (application)
EP 90402933 A 19901018; DE 69000803 T 19901018; US 60030990 A 19901019