EP 2887176 B1 20220914 - Electronic circuit with self-calibrated PTAT current reference, and method for operating same
Title (en)
Electronic circuit with self-calibrated PTAT current reference, and method for operating same
Title (de)
Elektronischer Schaltkreis mit selbst kalibriertem PTAT-Referenzstrom, und sein Einsatzverfahren
Title (fr)
Circuit électronique à référence de courant PTAT auto-calibrée, et procédé pour sa mise en action
Publication
Application
Priority
EP 13198965 A 20131220
Abstract (en)
[origin: CN104731148A] The invention relates to an electronic circuit with self-calibrated PTAT current reference and a method for actuating the same. The electronic circuit(1) with a self-calibrated PTAT current reference includes a PTAT current generator dependent on at least one integrated resistor(8) for supplying a PTAT output current(3). It further includes a reference current generator(3) dependent on at least one switched capacitor resistor(12), for supplying a reference current(Iref). The reference current(Iref) and the PTAT output current(IOUT) are compared in a comparator(6) so as to digitally adapt the programmable integrated resistor(8), or to digitally adapt the dimensional ratio of the transistors(P11,P12,P13) of a current mirror in the PTAT current generator, to supply the adapted PTAT output current(IOUT).
IPC 8 full level
CPC (source: EP KR US)
G05F 3/242 (2013.01 - EP KR US); G05F 3/262 (2013.01 - KR US)
Citation (examination)
- JP 2011124854 A 20110623 - FUJITSU LTD
- US 2010289462 A1 20101118 - WU CHIA-HSIN [TW]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2887176 A1 20150624; EP 2887176 B1 20220914; CN 104731148 A 20150624; CN 104731148 B 20160831; HK 1211715 A1 20160527; JP 2015122494 A 20150702; JP 5918344 B2 20160518; KR 101749794 B1 20170621; KR 20150073122 A 20150630; TW 201541219 A 20151101; TW I675275 B 20191021; US 2015177772 A1 20150625; US 9442509 B2 20160913
DOCDB simple family (application)
EP 13198965 A 20131220; CN 201410784806 A 20141217; HK 15112380 A 20151216; JP 2014253730 A 20141216; KR 20140184793 A 20141219; TW 103142196 A 20141204; US 201414558839 A 20141203