DocumentCode :
1330929
Title :
A Fully Integrated 
ADC in Organic Thin-Film Transistor Technology on Flexible Plastic Foil
Author :
Marien, Hagen ; Steyaert, Michiel S J ; Van Veenendaal, Erik ; Heremans, Paul
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ. Leuven, Heverlee, Belgium
Volume :
46
Issue :
1
fYear :
2011
Firstpage :
276
Lastpage :
284
Abstract :
In this work we present a fully integrated first order continuous-time ΔΣ ADC made in a pentacene-based dual-gate organic thin-film transistor technology on flexible plastic foil. The ADC achieves a precision of 26.5 dB at a clock speed of 500 Hz and draws 100 μA from a 15 V power supply. As sub-blocks of the ADC, we also present a Vt -insensitive single-stage differential amplifier with 10 kHz GBW, a 3-stage operational amplifier, an integrator, a comparator and a level shifter. The circuits are designed following a strict Vt -insensitive design strategy and use high-pass filters for offset cancellation. The active area is 13 × 20 mm2.
Keywords :
analogue-digital conversion; comparators (circuits); delta-sigma modulation; differential amplifiers; high-pass filters; operational amplifiers; organic field effect transistors; organic semiconductors; thin film transistors; 3-stage operational amplifier; GBW; clock speed; comparator; continuous-time ΔΣ ADC; current 100 muA; dual gate organic thin film transistor; flexible plastic foil; frequency 10 kHz; frequency 500 Hz; high-pass filters; level shifter; pentacene; single-stage differential amplifier; voltage 15 V; Gain; Logic gates; Organic thin film transistors; Sensitivity; Topology; ${rm V}_{rm t}$
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/JSSC.2010.2073230
Filename :
5582103
Link To Document :
