Class Notes

Preliminary Concepts

• Simple MOSFET model, simple current mirror, small-signal review Note: the current mirror analysis using quadratic model is just presented as an application example. Unless specified, use the ACM model in this course.

Advanced MOSFET model

• ACM model
• Plot of F(if) (wide range)
• Plot of F(if) (moderate inversion)
• VDS_sat detail
• Channel-length modulation
• New: Velocity saturation: for short-channel devices
• ACM extraction: extracting ACM key parameters from measurements/simulations.
• MOSFET extrinsic capacitances
• MOSFET intrinsic capacitances: quasi-static model. Normalized capacitances in Active Mode and Triode Mode
• Additional reference links:
  • Original paper describing model: all details included.
  • Another paper with a very brief introduction to the model (Section 2).

CMOS Technology

• Fabrication process and circuit components (updated)
• Layout considerations and parameter extraction (updated)
• Node names no longer mean what they used to (IEEE Spectrum article, Oct. 2013.)

Basic Current Mirrors

• Basic analysis and current mirror gain
• Simple mirror design example
• Pelgrom's Model of Mismatch Note: numbers in example are wrong.

Basic Amplifier Stages

• Analysis of CS amplifier using ACM model
• Capacitor-loaded CS amplifier frequency response
• Introduction and analysis using quadratic model
• Analysis of source-coupled pair with ACM model
• Current-mirror loaded differential amplifier. Cascode amplifier. PSRR.

More on Current Sources / Current and Voltage References

• Non-unity, cascode and high-swing cascode mirrors / references

Digital Circuits

• Inverter Basics
• Digital circuits

Operational Amplifiers

• Introduction (switched capacitors)
• 2-stage operational amplifier
• Sample design of 2-stage operational amplifier
• Additional notes: output drivers, frequency response