Design of an organic Differential Amplifier with Gain Enhancement Positive Feedback
Conference: ANALOG 2013 - Entwicklung von Analogschaltungen mit CAE-Methoden - Vorträge der 13. ITG/GMM-Fachtagung
03/04/2013 - 03/06/2013 at Aachen, Deutschland
Proceedings: ANALOG 2013 - Entwicklung von Analogschaltungen mit CAE-Methoden
Pages: 4Language: englishTyp: PDF
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Authors:
Ganesan, Ramkumar; Glesner, Manfred (Institute of Microelectronic Systems, Technische Universitaet Darmstadt, Merckstr. 25, 64283 Darmstadt, Germany)
Krumm, Jürgen; Ludwig, Klaus (PolyIC GmbH & Co. KG, Tucherstrasse 2, 90763 Fuerth, Germany)
Abstract:
This paper presents an organic differential amplifier design using gain enhancement feedback to achieve higher gain and more robust to Vt variation. The differential amplifier is designed using P-type organic thin-film transistors (OTFT) and a biased load with positive feedback providing the bias. The performance of the proposed circuit is compared with the ones having diode and cut-off load configuration. The proposed differential amplifier has a gain of 12 (V/V) approximately and is observed to be more robust to Vt variation. Thus the usage of positive feedback biased load combines the advantages of diode load and cut-off load. The circuits were operated with a VDD of -20 V.