EP 0072842 A4 19840406 - VARIABLE TEMPERATURE COEFFICIENT LEVEL SHIFTER.
Title (en)
VARIABLE TEMPERATURE COEFFICIENT LEVEL SHIFTER.
Title (de)
STANDVERSTELLVORRICHTUNG EINES VERÄNDERLICHEN TEMPERATURKOEFFIZIENTEN.
Title (fr)
DISPOSITIF DE DECALAGE DU NIVEAU DU COEFFICIENT DE TEMPERATURE VARIABLE.
Publication
Application
Priority
US 23609181 A 19810220
Abstract (en)
[origin: WO8202964A1] A variable temperature coefficient level shifter includes a circuit which generates a voltage V<uBE>u having a negative temperature coefficient and a voltage //c V<uBE>u having a positive temperature coefficient. A control current is generated by placing a first resistor (R<uN>u) between V<uBE>u and ground and a second resistor (R<up>u) between //c V<uBE>u and ground. Each of these currents forms a component of the control current which then has some net temperature coefficient. By properly scaling the resistors the control current may have any desired temperature coefficient between 2800ppm and 3000ppm. Once the temperature coefficient is set, a third resistor (R<uS>u) is provided through which the control current flows. The amplitude of the shift is then selected by selecting the value of resistor (R<uS>us).
IPC 1-7
IPC 8 full level
G05F 3/30 (2006.01)
CPC (source: EP)
G05F 3/30 (2013.01)
Citation (search report)
- [A] FR 2339719 A1 19770826 - STRATHCLYDE PRECAST CONCRETE L [GB]
- [XP] DE 3006598 A1 19810827 - BOSCH GMBH ROBERT [DE]
- [X] IEEE JOURNAL OF SOLID-STATE CIRCUITS, Band SC-11, no. 6, December 1976, NEW YORK (US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 8202964 A1 19820902; EP 0072842 A1 19830302; EP 0072842 A4 19840406; IT 1147597 B 19861119; IT 8247745 A0 19820208; JP H0664504 B2 19940822; JP S58500092 A 19830113
DOCDB simple family (application)
US 8200100 W 19820125; EP 82900756 A 19820125; IT 4774582 A 19820208; JP 50077882 A 19820125