Circuit Design
Low Voltage Analog Circuit Design Techniques:
A Tutorial
IEEE Dallas CAS Workshop 2000 Edgar Sánchez-Sinencio
March 27, 2000
http://amsc.tamu.edu/
Texas A&M University
Analog and Mixed-Signal Center
Low Voltage Analog Circuit Design Techniques: Roadmap
Low voltage (LV) power supply circuit design techniques are addressed in this tutorial. In particular: (i) Introduction; (ii) Transistor models capable to provide performance and power consumption tradeoffs; (iii) Low voltage implementation techniques, such as floating gates and bulk driven; (iv) Basic building blocks not involving cascode structures, and (v) LV circuit implementations examples.
Analog and Mixed-Signal Center, TAMU
Motivation
The need for analog circuits in modern mixed-signal VLSI chips for multimedia, perception, control, instrumentation medical electronics and telecommunication is very high. • What are the challenges in designing low voltage circuits ? - To operate with power supplies smaller than 3.3 volts - To design circuits with the same performance or better than circuits designed for larger power supplies - To perform with technologies smaller than 0.5 micron -To come with new design alternatives,
Analog and Mixed-Signal Center, TAMU
( continues)
• Why are we concerned in designing low voltage circuits ? - Designers can not use conventional cascode structures, and other conventional design methodologies. - Circuits should have the same performance or better than circuits designed for larger power supplies - Circuit performance with technologies smaller than 0.5um must be better than circuits for larger technologies. -Third-generation communication applications require circuits ( and systems) with improved dynamic range over a much wider bandwidth. - New building blocks and system must be designed to satisfy the needs of portable, lighter and faster equipment
Analog and Mixed-Signal Center, TAMU
Issues about low power supply voltage
Scaling down size
A Tutorial
IEEE Dallas CAS Workshop 2000 Edgar Sánchez-Sinencio
March 27, 2000
http://amsc.tamu.edu/
Texas A&M University
Analog and Mixed-Signal Center
Low Voltage Analog Circuit Design Techniques: Roadmap
Low voltage (LV) power supply circuit design techniques are addressed in this tutorial. In particular: (i) Introduction; (ii) Transistor models capable to provide performance and power consumption tradeoffs; (iii) Low voltage implementation techniques, such as floating gates and bulk driven; (iv) Basic building blocks not involving cascode structures, and (v) LV circuit implementations examples.
Analog and Mixed-Signal Center, TAMU
Motivation
The need for analog circuits in modern mixed-signal VLSI chips for multimedia, perception, control, instrumentation medical electronics and telecommunication is very high. • What are the challenges in designing low voltage circuits ? - To operate with power supplies smaller than 3.3 volts - To design circuits with the same performance or better than circuits designed for larger power supplies - To perform with technologies smaller than 0.5 micron -To come with new design alternatives,
Analog and Mixed-Signal Center, TAMU
( continues)
• Why are we concerned in designing low voltage circuits ? - Designers can not use conventional cascode structures, and other conventional design methodologies. - Circuits should have the same performance or better than circuits designed for larger power supplies - Circuit performance with technologies smaller than 0.5um must be better than circuits for larger technologies. -Third-generation communication applications require circuits ( and systems) with improved dynamic range over a much wider bandwidth. - New building blocks and system must be designed to satisfy the needs of portable, lighter and faster equipment
Analog and Mixed-Signal Center, TAMU
Issues about low power supply voltage
Scaling down size