EP 1132794 B1 20040526 - Method to derive a temperature independent voltage reference and a circuit to derive such a voltage reference
Title (en)
Method to derive a temperature independent voltage reference and a circuit to derive such a voltage reference
Title (de)
Verfahren zur Gewinnung einer temperaturunabhängigen Spannungsreferenz sowie Schaltungsanordnung zur Gewinnung einer derartigen Spannungsreferenz
Title (fr)
Methode d'obtention d'une référence de tension en dépendance de temperature et une circuit d'en obtenir
Publication
Application
Priority
AT 4042000 A 20000310
Abstract (en)
[origin: US2001026188A1] In a method for obtaining a temperature-independent voltage reference by an energy gap reference circuit using at least one bipolar transistor and a voltage source, only a single bipolar transistor is connected in series with a resistor. Different voltages are facultatively applied to the resistor. The voltages are detected upstream and downstream of the series resistor and fed to an A/D converter. The gain constant of the A/D converter is calculated from the digitalized measurements and used for measurement correction. The circuit arrangement for obtaining such a temperature-independent voltage reference includes a bipolar transistor and a resistor connected in series with the transistor. An A/D converter configured to yield digitalized voltage measurements is connected via switches to ports provided on either side of the resistor. The digital signals from the A/D converter are fed to a computer to determine the gain constant, from which the corrected voltage signal can be read out digitally.
IPC 1-7
IPC 8 full level
G05F 3/30 (2006.01)
CPC (source: EP US)
G05F 3/30 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1132794 A1 20010912; EP 1132794 B1 20040526; AT 410722 B 20030725; AT A4042000 A 20021115; DE 50102379 D1 20040701; US 2001026188 A1 20011004; US 6535053 B2 20030318
DOCDB simple family (application)
EP 01890066 A 20010307; AT 4042000 A 20000310; DE 50102379 T 20010307; US 80313901 A 20010312