Title (en)

INTEGRATED CURRENT SOURCE

Publication

EP 0080567 A3 19840404 (DE)

Application

EP 82108273 A 19820908

Priority

DE 3136780 A 19810916

Abstract (en)

[origin: EP0080567B1] 1. An integrated semiconductor current source circuit arrangement in the form of a current reflector comprising a plurality of output stages, each of which provides current to at least one load (R, L) and is in each case formed by a transistor stage (T2 , T3 , ..., Tn ; T'3 , ..., T'm ), with a transistor stage (T1 ; T'1 ) to supply the output stages (T2 , T3 , ..., Tn ; T'3 , ..., T'm ) with a control current (i1 , ..., in ), and a regulating circuit (OP, SG) provided to compare a signal (V1 - DELTA V), which represents the current (i0 +- DELTA i) received from the control current supply transistor (T1 ; T'1 ), with a theoretical signal (Uref ; Ur ) supplied by a reference circuit (J0R , T1R ; J0R , T1R , T2R ; T1R , T2R , t1R , t2R ), and form a comparison signal that regulates the control current supply transistor stage (T1 ; T'1 ), characterised in that the reference circuit (J0R , T1R ; J0R , T1R , T2R ; T1R , T2R , t1R , t2R ) is a constant current source decoupled from the current reflector via the regulating circuit (OP, SG).

IPC 1-7

G05F 3/20

IPC 8 full level

H03F 3/343 (2006.01); G05F 3/20 (2006.01); G05F 3/22 (2006.01); G05F 3/26 (2006.01); H01L 21/331 (2006.01); H01L 21/8222 (2006.01); H01L 27/082 (2006.01); H01L 29/73 (2006.01); H03F 3/34 (2006.01); H03F 3/347 (2006.01)

CPC (source: EP US)

G05F 3/222 (2013.01 - EP US)

Citation (search report)

• [A] FR 2117455 A5 19720721 - ITT
• [A] US 3962592 A 19760608 - THOMMEN WERNER, et al
• [A] US 3906332 A 19750916 - KELLER HANS
• [A] US 4177416 A 19791204 - DAVIS WILLIAM F [US]
• [A] RADIO FERNSEHEN ELEKTRONIK, Band 27, Nr. 10, Oktober 1978, Seiten 621-625, Berlin, DE.
• [AD] PHILIPS TECHNISCH TIJDSCHRIFT, Band 32, Nr. 1, 1971, Seiten 1-12, Eindhoven, NL.

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

DE 3136780 A1 19830331; DE 3277786 D1 19880114; EP 0080567 A2 19830608; EP 0080567 A3 19840404; EP 0080567 B1 19871202; JP S5866130 A 19830420; US 4965510 A 19901023

DOCDB simple family (application)

DE 3136780 A 19810916; DE 3277786 T 19820908; EP 82108273 A 19820908; JP 16075982 A 19820914; US 29886889 A 19890117