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1 International Journal of Microelectronics and Computer Science

1 2014

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Design of integrated readout circuit for NMOS THZ detectors based on chopper ampliﬁer concept

Kołaciński C, Obrębski D., Zagrajek P.

International Journal of Microelectronics and Computer Science

2014

Vol. 5, nr 1

14--24

This paper deals with design of readout circuit dedicated for NMOS-based terahertz detectors. The proposed architecture bases on chopper ampliﬁer and instrumentation ampliﬁer concepts. The main objectives were high gain (max. 100 dB) and proper operation with NMOS-based THz detectors. Three different architectures of measurement ampliﬁer designed for the research project are discussed in this paper. The designed chip was manufactured in AMS C35B4 process (350 nm feature size). Another issue described in this paper is dedicated, non-typical testing environment. At the end a few measurement results are shown.