- The sensing interface still demands high-performance analog design (to amplify the signal).
- At lower speeds, it is more efficient to digitize the signal and perform the required function(s) in the digital domain, whereas athigher speeds, we implement the function(s) in the analog domain.
- Sensors can only use analog design.
CMOS - complemetary metal-oxide-silicon
- The low cost of fabrication
- The possibility of placing both analog and digital circuits on the same chip so as to improve the overall performance and/or reduce the cost of packaging
- Device scaling continued to improve the speed of MOSFETs
Analog Design Challenges
- THranistor IMperfections
- Declining Supply Voltages
- Power Consumption
- Circuit Complexity
- PVT Variations
Levels of Abstraction