A 0.35 μm CMOS voltage derivative sensor with sign and inflection outputs

Author

Quilligan, Gerry ; Burton, D. Philip

Author_Institution

Limerick Univ., Ireland

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

A wideband first-order voltage differentiation circuit relies on switched capacitor (SC) techniques to yield an indication of slew direction. Fabricated in a 0.35 μm CMOS process using double poly capacitors, the circuit incorporates a window comparator to facilitate detection of inflection regions. The circuit´s sensitivity is adjustable by varying the measurement time-interval along with the threshold voltages of the window comparator and offers advantages over conventional differentiator schemes relying on resistors and capacitors.

Keywords

CMOS analogue integrated circuits; comparators (circuits); differentiating circuits; sensors; switched capacitor networks; 0.35 micron; CMOS voltage derivative sensor; SC techniques; adjustable sensitivity; double poly capacitors; first-order voltage differentiation circuit; inflection regions detection; slew direction indication; switched capacitor techniques; wideband voltage differentiation circuit; window comparator; Artificial intelligence; Capacitance; Capacitors; Circuit noise; Data mining; Frequency; Resistors; Switches; Voltage; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205633

Filename

1205633