EP 1354255 A1 20031022 - DEVICE FOR CONTROLLING A CIRCUIT GENERATING REFERENCE VOLTAGES
Title (en)
DEVICE FOR CONTROLLING A CIRCUIT GENERATING REFERENCE VOLTAGES
Title (de)
STEUERUNGSVORRICHTUNG FÜR EINE REFERENZSPANNUNGSERZEUGSSCHALTUNG
Title (fr)
DISPOSITIF DE COMMANDE D'UN CIRCUIT DE GENERATION DE TENSIONS DE REFERENCE
Publication
Application
Priority
- FR 0200278 W 20020123
- FR 0100953 A 20010124
Abstract (en)
[origin: FR2819954A1] The invention concerns a control device comprising a circuit generating REF reference voltages (VPOL1, V POL2) comprising three P-type MOS transistors (M12, M13 and M14) connected in series between a high-voltage input node (EHV) and the earth (GND), and supplying on the drain and the source of the middle transistor (M13) reference voltages (VPOL1, V POL2). Said device comprises means for controlling the reference transistors either, in a first operating mode, to force the first reference transistor (M12) in current source, the second reference transistor (M13) in off-state and short-circuit the third reference transistor (M14) to the earth, or, in a second operating mode, in connecting each of said transistors in diode, their gate and their drain being connected, on the basis of a logic control signal (/WR). Thus, the resulting reference voltages in output are based on said logic signal.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G05F 3/247 (2013.01 - EP US); G05F 1/465 (2013.01 - EP US)
Citation (search report)
See references of WO 02059708A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
FR 2819954 A1 20020726; FR 2819954 B1 20030411; EP 1354255 A1 20031022; US 2004113680 A1 20040617; US 6850112 B2 20050201; WO 02059708 A1 20020801
DOCDB simple family (application)
FR 0100953 A 20010124; EP 02700385 A 20020123; FR 0200278 W 20020123; US 47013404 A 20040114