EP 2529482 A1 20121205 - DIFFERENTIAL AMPLIFIER HAVING A RAIL-TO-RAIL INPUT VOLTAGE RANGE
Title (en)
DIFFERENTIAL AMPLIFIER HAVING A RAIL-TO-RAIL INPUT VOLTAGE RANGE
Title (de)
DIFFERENZVERSTÄRKER MIT EINEM RAIL-TO-RAIL-EINGANGSSPANNUNGSBEREICH
Title (fr)
AMPLIFICATEUR DIFFÉRENTIEL AYANT UNE PLAGE DE TENSION D'ENTRÉE "RAIL-TO-RAIL"
Publication
Application
Priority
- DE 102010013958 A 20100406
- EP 2011054588 W 20110325
Abstract (en)
[origin: WO2011124480A1] The invention relates to a differential amplifier having a rail-to-rail input voltage range, comprising a first differential input stage (11-P), which is connected to a first supply voltage rail via a first power source (12-P), and a second complementary differential input stage (11-N), which is connected to the second supply voltage rail via a second power source (12-N). To this end, switching means (50) are provided, which deactivate the first differential input stage (11-P) and activate the second differential input stage (11-N) when the voltage value of the input voltage signal exceeds a predetermined first voltage threshold (Vlow) in the event of rising input voltage, and which deactivate the second differential input stage (11-N) and activate the first differential input stage (11-P) when the voltage value of the input voltage signal falls below a predetermined second voltage threshold (Vhigh) in the event of falling input voltage. A constant input slope can thus be achieved, having a high phase reserve, which makes the invention particularly applicable in the field of biosensory technology.
IPC 8 full level
H03F 3/45 (2006.01)
CPC (source: EP US)
H03F 3/4521 (2013.01 - EP US)
Citation (search report)
See references of WO 2011124480A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010013958 A1 20111006; EP 2529482 A1 20121205; JP 2013524665 A 20130617; US 2013021101 A1 20130124; WO 2011124480 A1 20111013
DOCDB simple family (application)
DE 102010013958 A 20100406; EP 11711834 A 20110325; EP 2011054588 W 20110325; JP 2013503058 A 20110325; US 201113639798 A 20110325