Course detail
Methods of analog integrated circuits design
FEKT-LNAIAcad. year: 2015/2016
The course deals with moderately advanced methods of analog integrated circuits with respect to a more detailed understanding of the parasitic effects in terms of accuracy and noise. Used technologies (bipolar, CMOS and BiCMOS).
The course content is:
- Design and simulation of a small analog system
- Methods for accurate design, calculation of matching (Matching Analysis)
- Noise analysis in theory and in practice
Practically-oriented exercises on real precision low-noise design of analog circuits.
Computer exercises with usage of the advanced software packages (Cadence).
Guarantor
Department
Learning outcomes of the course unit
- design a simple analog system (trained on analog circuitry for a switching power supply source controller)
- understand, explain and perform design and analysis of accurate analog integrated circuit (precise operational amplifier, precise voltage reference, precise current reference)
- design, analyze and optimize analog integrated circuit with regard to low noise requirements
(Emphasis will be placed on practical skills (engineering calculation, verification simulation).
Prerequisites
Co-requisites
Recommended optional programme components
Literature
Razavi:"Design of analog integrated circuits", McGraw-Hill, ISBN 0-07-238032-2, 2001 (EN)
Razavi, B.:"RF Microelectronics (2nd Edition) (Prentice Hall Communications Engineering and Emerging Technologies Series), Oct. 2011, ISBN:978-0-13-713473-1 (EN)
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
usually:
- 30 points for two written tests during semester
- 70 points for the final exam (written test + oral correction)
Language of instruction
Work placements
Course curriculum
- BG reference
- Current reference
- Vcc clamp (parallel controller)
- V-> I converter with thermally stable offset
- Double-ramp oscillator with VCO characteristics
- Vcc reset
- Vcc management (UVLO circuits)
- Error circuits
2) THE BASIS OF THE PRECISION CIRCUITS DESIGN
- The main concept of the precise design
- Basic equations for error calculation in analog circuits
- Method of Monte Carlo
- Precise transistor pair
- Accurate current mirror
- The precise differential stage (MOS / bipolar, resistive/active load)
- Accurate two-stage operational amplifier
- Error Calculation using the match nomogram
3) NOISE
- Definition of noise density and integral noise value and their relationship
- Correlated and uncorrelated noise contribution
- Noise characterization of active element
- Resistor noise and BJT noise
- The equivalent bipolar transistor input noise
- MOS transistor noise, equivalent MOS transistor input noise
- Basic concept of low-noise design
- Designl of a low-noise differential stage (MOS, bipolar)
- Noise of the differential stage with active load
4) DESIGN OF THE PRECISE LOW NOISE BG REFERENCE
- Basic principle of accurate BG reference
- Identification of dominant error contributions
- Multiple dVbe principle
- Precise low-noise BG reference without additional filtration
- Precise low-noise BG reference with bypass capacitance
- Bypass capacitance pre-charge circuits
5) DESIGN OF THE PRECISE LOW-NOISE OPERATIONAL AMPLIFIER
- Calculation / simulation of the precise OPAMP minimum offset in MOS and BJT process
- Calculation / simulation of the precise OPAMP minimum noise in MOS and BJT process
- Design of the precise OPAMP second stage (parallel / Miller frequency compensation)
- Calculation of the noise and errors of the OPAMP second stage
- Design of the precise OPMAP first stage
- Frequency compensation, phase margin optimization
Aims
Specification of controlled education, way of implementation and compensation for absences
Usually: Credit is conditional upon attendance in computer labs