Integrated high-voltage CMOS mixed-signal instrumentation system for OFET-based gas sensor

This paper presents the concept and experimental results of a mixed-signal instrumentation system featuring a high-voltage CMOS ASIC. This system is dedicated to operate an OFET-based gas sensor. It is composed of high-voltage amplifiers, used to bias the OFET, a low-voltage analog signal processing chain, a 12-bit σΔ ADC, a 5-bit DAC and a digital SoC. This FPGA-implemented SoC controls the whole system. In particular, it generates specific control signals of the OFET's gate voltage. The high voltage supply is generated on-chip by means of dedicated charge pumps.

[1]  Norbert Dumas,et al.  Modeling and optimization of a latched charge pump loaded by a resistive circuit , 2012, Proceedings of the 19th International Conference Mixed Design of Integrated Circuits and Systems - MIXDES 2012.

[2]  Peter Lienerth.  Elaboration and characterization of field-effect transistors based on organic molecular wires for chemical sensing applications , 2014 .

[3]  Thomas Heiser,et al.  A deep-purple-grey thiophene–benzothiadiazole–thiophene BODIPY dye for solution-processed solar cells , 2014 .

[4]  Gabor C. Temes,et al.  Understanding Delta-Sigma Data Converters , 2004 .

[5]  Venumadhav Korampally,et al.  Large sensitivity enhancement in semiconducting organic field effect transistor sensors through incorporation of ultra-fine platinum nanoparticles , 2013 .

[6]  H. Zheng,et al.  Molecularly imprinted organic transistor-based sensor for selective trace chemical vapor detection , 2015, 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS).

[7]  Joseph Miragliotta,et al.  Hydroxy-terminated organic semiconductor-based field-effect transistors for phosphonate vapor detection. , 2007, Journal of the American Chemical Society.

[8]  Thomas Heiser,et al.  Improving the selectivity to polar vapors of OFET-based sensors by using the transfer characteristics hysteresis response , 2016 .

[9]  Johan H. Huijsing,et al.  Operational Amplifiers - Theory and Design , 2000 .

[10]  Foudil Dadouche,et al.  Adjustable Nyquist-rate System for Single-Bit Sigma-Delta ADC with Alternative FIR Architecture , 2016 .