EP 0649079 B1 19980923 - Regulated voltage generating circuit of bandgap type
Title (en)
Regulated voltage generating circuit of bandgap type
Title (de)
Geregelter Spannungsquellengenerator der Bandgapbauart
Title (fr)
Circuit générateur de tension stabilisée du type bandgap
Publication
Application
Priority
FR 9312187 A 19931013
Abstract (en)
[origin: EP0649079A1] -Circuit generating a reference voltage (Vref) independent of the supply voltage (Vcc) and of the temperature, including a cell (1) in which transistors (T1,T2) of different emitter areas deliver a current (Ipt) proportional to the absolute temperature. -According to the invention, the circuit includes an amplifier (2) having an input stage (T3,T4,T5,T6,25,26) of folded cascode type, as well as an output stage (T34,T56,T22,35,45,46,43) configured to produce symmetry of operation capable of eliminating first- and second-order errors in the accuracy and stability of the reference voltage (Vref) produced by the generating circuit. -Application to microelectronics. <IMAGE>
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
DOCDB simple family (publication)
EP 0649079 A1 19950419; EP 0649079 B1 19980923; DE 69413489 D1 19981029; DE 69413489 T2 19990520; FR 2711258 A1 19950421; JP H07152445 A 19950616; US 5488329 A 19960130
DOCDB simple family (application)
EP 94202878 A 19941005; DE 69413489 T 19941005; FR 9312187 A 19931013; JP 24547294 A 19941011; US 31989994 A 19941007