EP 1738186 A4 20070829 - DETECTOR OF DIFFERENTIAL THRESHOLD VOLTAGE
Title (en)
DETECTOR OF DIFFERENTIAL THRESHOLD VOLTAGE
Title (de)
DETEKTOR FÜR EINE DIFFERENZ-SCHWELLENSPANNUNG
Title (fr)
DETECTEUR DE TENSION SEUIL DIFFERENTIELLE
Publication
Application
Priority
- US 2005011341 W 20050404
- FR 0403551 A 20040405
- US 91708004 A 20040811
Abstract (en)
[origin: WO2005098459A1] A differential threshold voltage level detection circuit (300) receives (310, 350) a differential voltage pair (VP, VM) as an input, applying each component of the differential pair to an individual voltage shifting circuit (315). Each voltage shifting circuit is configured with a regulated (318) current producing a shifted and a non-shifted version in-phase ( VPH, VPL, VMN, VML). For a shifted set of output differential voltages, the shift magnitude is proportional to the current entering a shifting circuit and is configured to be less than a peak-to-peak magnitude of the differential voltage to be detected. A current mirror within the detector contains a current reference (Iref) configured to produce a current to be passed through a voltage generator. The current magnitude is sufficient to generate a regulated voltage output to the two current regulating devices that supply the voltage shifting circuits. An overlap detector (500) receiving (540-546) both differential voltage pairs (330, 335, 370, 375) produces a signal (VOUT) indicating an input is at a detection threshold.
IPC 8 full level
G01R 19/00 (2006.01); G01R 19/10 (2006.01); G01R 19/165 (2006.01); H03K 5/08 (2006.01); H03K 5/125 (2006.01); H03K 5/153 (2006.01); H03K 5/22 (2006.01); H03K 5/24 (2006.01)
CPC (source: EP)
G01R 19/10 (2013.01); G01R 19/16571 (2013.01); G01R 19/16576 (2013.01); G01R 19/16585 (2013.01); H03K 5/082 (2013.01); H03K 5/125 (2013.01); H03K 5/153 (2013.01); H03K 5/2481 (2013.01)
Citation (search report)
- [X] US 5764086 A 19980609 - NAGAMATSU TETSU [JP], et al
- [X] EDWARDS C F ET AL: "A high speed offset-compensated differential comparator in floating body CMOS SOS technology for radiation hard switched-capacitor systems", SOI CONFERENCE, 1997. PROCEEDINGS., 1997 IEEE INTERNATIONAL FISH CAMP, CA, USA 6-9 OCT. 1997, NEW YORK, NY, USA,IEEE, US, 6 October 1997 (1997-10-06), pages 160 - 161, XP010256254, ISBN: 0-7803-3938-X
- [X] DOWLATABADI A B ET AL: "A generic voltage comparator analog cell produced in standard digital CMOS technologies", CIRCUITS AND SYSTEMS, 1996., IEEE 39TH MIDWEST SYMPOSIUM ON AMES, IA, USA 18-21 AUG. 1996, NEW YORK, NY, USA,IEEE, US, 18 August 1996 (1996-08-18), pages 35 - 38, XP010222977, ISBN: 0-7803-3636-4
- See references of WO 2005098459A1
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
WO 2005098459 A1 20051020; EP 1738186 A1 20070103; EP 1738186 A4 20070829
DOCDB simple family (application)
US 2005011341 W 20050404; EP 05735087 A 20050404