Circuit Design in Nanometer-Scaled CMOS Technologies


With the notification from the vice-president for teaching from October 20th, all courses at Uni Ulm will be held digitally and in-person teaching is limited to the absolutely necessary practical courses that require special lab or work rooms.

Therefore, all lectures, exercises and projects offered by the Institute of Microelectronics will be offered online with the effective start date of the winter term, November 2nd, 2020.

All links to the online teaching via BigBlueButton will be found in the Moodle courses within the next week.

We ask you to participate using a microphone, as interaction will otherwise not be possible.

The format per course will be discussed with the students in the first online lecture.

Module Description

In this module, we will introduce important problems associated with designing in nano-meter-scaled CMOS design technologies. The course begins with reviewing the issues with the square law model and how it breaks down in nano-meter design. The advanced charge-based model is introduced to fill this gap in order to get a new feeling of designing with short channel effects. After reviewing the operation regions of the MOSFET, we further review thermal and 1/f noise effects taking into account the newly introduced modelling. After looking into various layout techniques, the course continues with designing single stage amplifiers and investigating different output stages and their effects on performance. Both singled ended and differential topologies will be discussed, while going further into more complex compensation techniques resulting in the introduction to multistage/multipath operational amplifier design. To conclude the course, we review operational amplifier stability metrics and dive into advanced test benches to include parasitics loading which makes possible stable systems at low power and/or high speed.

Module Contents

  1. MOSFET operation and modern CMOS devices
  2. Short and narrow channel effects in advanced nm CMOS technologies
  3. Advanced Noise Modeling
  4. Layout and Matching Techniques
  5. Single-Stage OpAmp design
  6. Multi-Stage OpAmp design
  7. Fully-Differential OpAmps
  8. Stability and OpAmp Testbenches
  9. State-of-the-Art Design Examples