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Autocompensation of operational amplifier offset for precise measurement
Prášek, David ; Khateb, Fabian (referee) ; Prokop, Roman (advisor)
This work deals with the problems of the design of two stage operational amplifier with automatic offset compensation for precise measurement. Full design operational amplifier is aimed at appropriate realization in technology CMOS07 with usage Cadence design environment. The goal of the design is minimum offset value as well as the adherence to the parameters of the operational amplifier which are introduced in submission of the thesis.
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Design of extremly low-voltage rectifier in CMOS technology
Musilová, Nikola ; Šteffan, Pavel (referee) ; Khateb, Fabian (advisor)
The aim of this work is to design a low-voltage and low-power rectifier using CMOS technology and an operational amplifier for input voltages in the order of tens of mV, which correspond to sensor and biomedical applications. The circuit allows both half-wave and full-wave rectification. The key parameters are high gain and very low power consumption of the operational amplifiers that make up the rectifier.
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Design of anti-aliasing filter for discrete-time delta-sigma modulators
Vogel, Vojtěch ; Háze, Jiří (referee) ; Kledrowetz, Vilém (advisor)
This work deals with the design of a second order anti-aliasing filter with a cutoff frequency in the order of hundreds of kHz using the switched capacitor technique. The use of this technique allows the design of accurate and tunable analog circuits without the use of resistors. In this work, the design of analog switches is described. Furthermore, the various circuits required for the design of the filter in the onsemi I3T80 technology are proposed.
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Design of Differential Difference Amplifier in CMOS technology
Trojan, Vladimír ; Khateb, Fabian (referee) ; Kledrowetz, Vilém (advisor)
The bachelor's thesis deals with the design of differential difference amplifier (DDA) in technology TSMC 0,18 with maximum input and output common mode range, minimum power dissipation and area on chip. The thesis describes the basics of CMOS technology, commonly used structures of analog integrated circuits and operational amplifiers. Main focus of the thesis is design of circuit of DDA. Designing and simulations of DDA parameters were made in program Cadence Virtuoso and ADE Assembler simulation environment. Layout of DDA was designed in Layout XL environment.
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Low-voltage low-power rectifiers for biological signals processing
Bárta, Jakub ; Háze, Jiří (referee) ; Kledrowetz, Vilém (advisor)
This thesis deals with the design of precision rectifier for low voltage and low power aplocations in CMOS technology. First chapter introduces most common biological signals and it’s acquision and processing. Second chapter describes different types of rectifiers it’s usability in low power aplications and suitability for biomedical signal processing. Third chapter shows different operational amplifier topologies used in precision rectifier circuits. Fourth chapter deals with design of precision rectifier using different operational amplifier structures and it’s comparison.
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