EP 2084816 A1 20090805 - SIGMA-DELTA MODULATOR
Title (en)
SIGMA-DELTA MODULATOR
Title (de)
SIGMA-DELTA-MODULATOR
Title (fr)
MODULATEUR SIGMA-DELTA
Publication
Application
Priority
- EP 2007061568 W 20071026
- FR 0609561 A 20061031
Abstract (en)
[origin: FR2907988A1] The modulator has an analog to digital converter (10) placed in a closed control loop and providing an output digital signal (s). The signal is subtracted from an input analog signal (e) after conversion by a digital to analog converter (11). The converter (11) is placed in a loop between an output of the modulator and an input of a summer (12). The difference between the signals is filtered and amplified. Non decided bits at an output of the converter (10) are assigned with same values in the output digital signal and in a digital signal that is re-sent towards an input of the modulator.
IPC 8 full level
H03M 3/02 (2006.01)
CPC (source: EP US)
H03M 3/322 (2013.01 - EP US); H03M 3/424 (2013.01 - EP US)
Citation (search report)
See references of WO 2008052949A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2907988 A1 20080502; FR 2907988 B1 20090123; EP 2084816 A1 20090805; US 2009322576 A1 20091231; US 8102290 B2 20120124; WO 2008052949 A1 20080508
DOCDB simple family (application)
FR 0609561 A 20061031; EP 07821928 A 20071026; EP 2007061568 W 20071026; US 51309207 A 20071026