A low voltage very high impedance current mirror circuit and its application
Also Available Domains Tanner EDA|Cadence EDA|Cadence EDA
Abstract
Current mirror circuit has served as the basic building block in analog circuit design since the introduction of integrated circuits. In this paper, “A Very high impedance current mirror, operating in reduced power supply which does not use any additional biasing circuit and its application” is proposed. The design uses a high swing super Wilson current mirror which has negative feedback. A feedback action is used to force the input and output currents to be equal. The output current is expected to be mirrored with a transfer error less than 1% when the input current is increased from 5μA to 40μ A. As an application, the current mirror circuit has been used in the design of a high gain, improved output swing differential amplifier. A telescopic differential amplifier is chosen for designing since it is used in low power application. A comparative study of different current mirror circuits and amplifier is also made. The output swing of the circuit is improved than what is expected. All the designs are implemented using 45nm technology in cadence virtuoso tool
KEYWORDS: Current mirror, Wilson current mirror, Output Impedance, CMRR, Telescopic Differential Amplifier
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Block Diagram
Specifications
Software Requirements:
· Tanner EDA
· Technology files: 45nm
Hardware Requirements:
· Microsoft® Windows XP
· Intel® Pentium® 4 processor or Pentium 4 equivalent with SSE support
· 512 MB RAM
· 100 MB of available disk space
Learning Outcomes
- Introduction to current mirror
- Knowledge on Wilson current mirror
- Transistors & its applications
o Types of Transistors
o Logic Gates using Transistors
o Pull Up and Pull Down networks
o Importance of Transistors
· MOS Fundamentals
· NMOS/PMOS/CMOS Technologies
· How to design circuits using Transistor logic?
· Transistor level design for analog to digital converters
· How to design low power, high speed area efficient transistor level circuits?
· Introduction to Analog Electronics
· Importance of Telescopic Differential Amplifier
· Applications in real time
- Cadence virtuoso tool for design and simulation
- Solution providing for real time problems
· Project Development Skills:
o Problem Analysis Skills
o Problem Solving Skills
o Logical Skills
o Designing Skills
o Testing Skills
o Debugging Skills
o Presentation skills
o Thesis Writing Skills
Paper Publishing
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