Global Patent Index - EP 0600003 B1

EP 0600003 B1 20000329 - METHOD FOR TEMPERATURE-COMPENSATING ZENER DIODES HAVING EITHER POSITIVE OR NEGATIVE TEMPERATURE COEFFICIENTS

Title (en)

METHOD FOR TEMPERATURE-COMPENSATING ZENER DIODES HAVING EITHER POSITIVE OR NEGATIVE TEMPERATURE COEFFICIENTS

Title (de)

VERFAHREN ZUR TEMPERATURKOMPENSATION VON ZENERDIODEN MIT ENTWEDER POSITIVEN ODER NEGATIVEN TEMPERATURKOEFFIZIENTEN

Title (fr)

PROCEDE DE COMPENSATION DE LA TEMPERATURE DE DIODES ZENER PRESENTANT DES COEFFICIENTS DE TEMPERATURE SOIT POSITIFS SOIT NEGATIFS

Publication

EP 0600003 B1 (EN)

Application

EP 92918698 A

Priority

  • US 9207039 W
  • US 74808791 A

Abstract (en)

[origin: WO9304423A1] An auto-TC voltage reference (Vo) wherein an operational amplifier (20) receives at one input (22) the voltage of a Zener diode (24) and at its other input (38) receives a compensation signal from a feedback circuit (30A) comprising a transistor (Q4) and resistor network (40). When one of the resistors of the network is trimmed to give a nominal output voltage for the reference, the TC of the reference voltage will have been reduced to zero, or nearly so. The circuitry is capable of compensating Zener diodes of either positive or negative TC.

IPC 1-7

G05F 3/20; G05F 1/46; G05F 3/18

IPC 8 full level

G05F 1/56 (2006.01); G05F 1/46 (2006.01); G05F 1/567 (2006.01); G05F 3/18 (2006.01)

CPC (source: EP)

G05F 1/463 (2013.01); G05F 1/567 (2013.01); G05F 3/18 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 9304423 A1 19930304; DE 69230856 D1 20000504; DE 69230856 T2 20001109; EP 0600003 A1 19940608; EP 0600003 A4 19941102; EP 0600003 B1 20000329; JP H06510149 A 19941110

DOCDB simple family (application)

US 9207039 W 19920820; DE 69230856 T 19920820; EP 92918698 A 19920820; JP 50459493 A 19920820