ANALOG INTEGRATED CIRCUITS FOR SIGNAL PROCESSING
Academic year and teacher
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- Versione italiana
- Academic year
- 2016/2017
- Teacher
- GIANLUCA SETTI
- Credits
- 6
- Didactic period
- Primo Semestre
- SSD
- ING-INF/01
Training objectives
- The aim of this class is to give the necessary knowledge to design and implement some fundamental analog building blocks and circuits in CMOS technology, such as operational amplifiers and continuous and discrete-time filters.
Prerequisites
- The class is the natural continuation of "Analog Electronics". The knowledge of the content of "Analog Applied Electronics" is desirable, but not fundamental to follow this class
Course programme
- Analysis and design of CMOS analog circuits
MOS transistor model. Intrinsic and extrinsic reactive effects of the MOSFET. SPICE models of the MOSFET. Small signal equivalent circuit of the MOSFET. CMOS elementary amplifiers: common source, common gate a common drain configurations. Cascode amplifier. CMOS differential amplifiers. Current mirrors (simple version, cascade, wide-swing cascade, and Wilson). CMOS operational amplifiers. Design of a 2-stage OPAMP. Compensation of OPAMPs. Power Supply Rejection Ration of a 2-stages OPAMP. Slew rate. OPAMP with cascode differential stage. OPAMP with cascode differential stage and cascade load. Folded Cascode OPAMP, songle ended and fully differential
Design of continuous- and discrete-time active filters
Design of integrated resistors in bipolar and CMOS technology. Switched capacitor working principle. FIR and IIR filters. Stability issues. Z-transform definition and properties. Transfer function of a digital filter. Problem of the transfer function approximation. Butterworth and Tschebyschev filters. Frequency transform. Spectrum of a sampled signal and approximation of a desire frequency response. Methods of Forward Euler and Bilinear transform. Warping. Frequency response of a switched capacitor integrator. Switched capacitors implementation of Implementation of ladder filters and biquadratic cells.
Introduction to OTA-C filters. Simple and differential OTA-C integrator. Examples of first and second order OTA-C filters. MOSEFET-C filters. Tuning. Didactic methods
- Theoretical/practical lessons.
Learning assessment procedures
- The final examination is in oral form with questions on the topics of the course, the student can submit a brief report on a project whose theme is assigned by the teacher this replaces two questions.
Passing the final exam is the proof that knowledge and abilities outlined in the training objectives of the course have been achieved. Reference texts
- D.A. Johns, K.Martin "Analog Integrated Circuit Design", Wiley 1997.
