ECEN4827/5827 Analog IC Design

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Course Materials and Practice Problems

Circuit design and simulation tools

IC technologies and device physics

• CMOS device physics review

Device characteristics, DC, large-signal and small-signal analysis and design

• MOS and BJT device characteristics, large-signal and small-signal models

• Review of operating regions of MOS transistors

• Review of small-signal models, gain and unity-gain frequency limitations, subthreshold and short-channel effects, comparison between MOS and BJT

• Basic gain stages

• Practice problems:

  • A1 device operating regions and DC bias solution in an op-amp circuit
  • A2 current mirrors
  • A3 common-source (CS) amplifier w/ sim
  • A4 inverter w/ sim
  • A5 op-mode, bias, ssm gain, two diff pairs
  • A6 symmetrical OTA, voltage gain, input common-mode voltage range
  • A7 basic current-mirror design (needs fig)
  • A8 CS & CD amps, ssm gain
  • A9 CS amp, ssm gain, op-mode range
  • A10 simplified folded-cascode, dc-bias, ssm gain, design
  • A11 op-mode & bias
  • A14 CS-CD amp design
  • A15 two-input CS amp, op-range, ssm
  • A16 CMOS OTA design with magic layout & sim
  • A17 effects of device output resistance (lambda)
  • A18 op-modes and bias
  • A19 cascode current mirrors
  • A20 ssm resistances from A18
  • A21 ssm resistances from A18
  • A22 inverter ssm gain and Rout
  • A23 BiCMOS op modes & bias
  • A24 ssm resistances from A23, BiCMOS
  • A25 ssm resistances from A23, BiCMOS
  • A26 ssm resistances looking into BJT terminals
  • A26-mos ssm resistances looking into MOS terminals
  • A27 exam problem
  • A28 exam problem
  • A29 cross-coupled pair, op-mode & ssm
  • A30 MOS process and parasitics
  • A31 exam problem    
  • A32 exam problem
  • A33 bandgap reference
  • A34 mos spice simulation
  • A35 exam problem
  • A36 exam problem
  • A37u exam problem
  • A37g exam problem
  • A38 diff pair, ssm gain

Op-amp characteristics, imperfections and application circuits

• Op-amp imperfections in application circuits: open-loop gain, input resistance, output resistance, output voltage swing

• Op-amp imperfections in application circuits: input offset voltage, input bias current and input offset current

• Practice problems:

  • O1 effects of finite open-loop gain in a non-inverting amplifier
  • O2 non-inverting amplifier using LMH6642
  • O3 precision current reference: tolerances and temperature drift
  • O4 photo-diode amplifier, application note example
  • O5 linear voltage regulator: tolerances and temperature drift solution; solution
  • O6 input offset voltage and CMRR
  • O7 photo-diode amplifier
  • O8 reference current source

Basic op-amp circuit realizations

• Differential amplifiers - introduction

• Differential amplifiers - analysis and design

• Two-stage op-amp

• Random offset in CMOS IC design (lecture by Art Zirger)
• Output stages

Voltage and current references

• Current and voltage references

Analysis of Feedback Circuits

• Middlebrook's Feedback Theorem
  Derivation
  Example #1
  Example #2
• Introduction to analysis of feedback circuits

High-frequency models and frequency responses

• High-frequency models and introduction to bandwidth limitations
• Bandwidth estimation through the ZVTC (zero-value-time-constant) method
• Finding frequency responses of multi-stage amplifiers using the (NEET) N-extra-element method

Frequency responses and compensation of feedback circuits

• Introduction to analysis of feedback circuits
• Frequency responses and stability of feedback circuits

Op-amp design techniques

• Two-stage op-amp