EP 1164455 A1 20011219 - Process and device for generating a temperature independent current
Title (en)
Process and device for generating a temperature independent current
Title (de)
Verfahren und Vorrichtung zur Erzeugung eines temperaturunabhängigen Stroms
Title (fr)
Procédé et dispositif de génération d'un courant indépendant de la température
Publication
Application
Priority
EP 00202059 A 20000613
Abstract (en)
A generator produces a first current (11), proportional to first temperature stable input voltage (Vin), through electrodes (12a,12b) of a first transistor (12). A weak inversion amplifier (11) produces a temperature dependent offset voltage (Vos(T)) between its inputs (11a,11b). This offset voltage and the input voltage (Vin) are adjusted to compensate resistance (13) temperature dependence so that the current generated (11) is temperature independent. Method of current (11) generation by means of a current generator circuit (10) connected to first and second supply voltages (Vss, Vdd): (a) an amplifier (11) provides a first control voltage at its output (11c) in response to a difference between the first and second voltages applied to respective inputs (11a,11b); a first transistor (12) having a first current electrode (12a), a control electrode (12c), connected to the amplifier output (11c), and a second current electrode (12b) connected to the voltage (Vdd), and; a resistive component (13) having a terminal connected to the amplifier input (11b) as well as to the transistor current electrode (12a) and a terminal the first voltage (Vss). The resistive component has a resistance value (R(T)) which is temperature dependent
IPC 1-7
IPC 8 full level
G05F 3/24 (2006.01)
CPC (source: EP)
G05F 3/242 (2013.01)
Citation (search report)
- [Y] US 5933051 A 19990803 - TSUCHIDA KENJI [JP], et al
- [A] US 5805004 A 19980908 - TANTEN LEO [DE], et al
- [A] US 5982226 A 19991109 - RINCON-MORA GABRIEL A [US]
- [Y] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1164455 A1 20011219; EP 1164455 B1 20060531; AT E328313 T1 20060615; DE 60028356 D1 20060706; DE 60028356 T2 20070531
DOCDB simple family (application)
EP 00202059 A 20000613; AT 00202059 T 20000613; DE 60028356 T 20000613