Chapter 1. Electronics I - Introduc0on. 1
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1 Chapter 1 Electronics I - Introduc0on talarico@gonzaga.edu 1
2 Electronics vs. Microelectronics Discrete Circuits vs. Integrated Circuits Limit the component count to achieve a small board area Available resistors are in the range 1Ω-10MΩ Available capacitors are in range 1pF-10mF All resistors are within 1-10% of their nominal value The u0lity of discrete transistors is limited. Usually prefer opamps over discrete transistors. Some0me use BJTs if opamps can t do the job. Use MOSFET primarily as switches Source: B. Murmann, Stanford Avoid using resistors and inductors, use as many MOSFET transistors as needed to realize the best circuit implementa0on Available capacitors are in range 1fF-100pF The cri0cal parameters in transistors can be made to match within 1%, but vary by more than 30% for different fabrica0on runs Capacitors of similar size can match to within 0.1%, but vary by more than 10% for different fabrica0on runs talarico@gonzaga.edu 2
3 Circuits are Everywhere Source: B. Murmann, Stanford 3
4 In the beginning was Source: B. Murmann, Stanford 4
5 Moore s Law In 1965, Gordon Moore s predicted exponen0al growth in the number of transistor per integrated circuits talarico@gonzaga.edu 5
6 and the predic0on was right source: wikipedia Transistors have become: smaller faster consume less power cheaper to manufacture No other technology has grown so fast so long 6
7 Transistors Cost 7
8 Everybody can afford a lot of transistors talarico@gonzaga.edu 8
9 Social Impact 9
10 Applica0ons driving the market 10
11 IoT Trend: more connected things than people 11
12 State of the Art Semiconductor Fab Source: B. Murmann, Stanford 12
13 45 nm CMOS Technology (Intel) source: Steve Cowden The Oregonian July
14 State of the Art Microprocessor 14
15 Hearing Aid with Wireless Receiver 15
16 Analog and Digital Signals Analog = signals that occurs in nature are con0nuous in 0me and con0nuous in amplitude Digital (abstrac0on) = signal can take only a finite number of values and can changes only at fixed points in 0me talarico@gonzaga.edu 16
17 Analog and Digital Signals Analog World S/H Q Digital World The digital signal (red) is the sampled and rounded representa0on of the grey analog signal Source: wikipedia talarico@gonzaga.edu 17
18 Analog & vs. Digital Analog Circuits Advantages Require fewer devices Beker to deal with low signal amplitudes Beker to deal with high frequencies Digital Circuits Advantages Beker immunity to noise More adaptable (e.g. microprocessors) Design can be done at more abstract level Beker economic (easier to implement as ICs) 18
19 Mixed Signal System Analog Media and Transducers Signal Conditioning Signal Conditioning A/D D/A Digital Processing Sensors, Actuators, Antennas, Storage Media,... Mixed-Signal Integrated Circuit signal condi0oning = signal scaling (amplifica0on or akenua0on) and shining Source: B. Murmann, Stanford talarico@gonzaga.edu 19
20 Managing Complexity: Levels of Abstrac0on Analog World S/H Q Digital World Analog Digital Source: B. Murmann, Stanford talarico@gonzaga.edu 20
21 Common Analog Blocks Power supplies Amplifiers Filters Signal generators (oscillators) Wave-shaping circuits Converters (ADC and DAC) 21
22 Circuit designers must be broad Source: B. Murmann, Stanford 22
23 Course Topics Physics of Semiconductors Diode models and applica0on circuits Basics of Amplifiers Circuit Simula0on Transistors (BJTs and MOSTs) Biasing of Transistors Single stage Amplifiers (atoms of analog design) Mul0 stage Amplifiers Current Sources and Mirrors Frequency Response of Amplifiers Op amp based feedback circuits 23
24 Prerequisites Lumped vs. distributed circuits Kirchhoff s Rules Independent and dependent sources Superposi0on principle Thevenin and Norton equivalents Cons0tu0ve equa0ons of R, L and C Sinusoids and complex exponen0als LTI systems and their proper0es Fourier transform and Laplace transform Frequency and 0me-domain response of LTI systems First and second order linear circuits (transient and steady state response) talarico@gonzaga.edu 24
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