An Improved Low Power Sigma Delta ADC Implemented in 0.25µm CMOS Process
Objective
The main objective of this paper is to design a power efficient sigma delta ADC using telescopic op-amp as a integrator in this proposed design of ADC.
Abstract
This paper focuses on enhancing the power and performance of the Sigma Delta ADC through improvements in its modulator components, namely the integrator and comparator. By leveraging the advantageous characteristics of both the integrator and comparator, a novel approach is presented. The integrator circuit is implemented using a telescopic op-amp, known for its high power efficiency and speed. Furthermore, the design incorporates a low-power, high-speed, and low-offset dynamic latch comparator, resulting in significant performance enhancements for the Sigma Delta ADC. To validate the effectiveness of the modified Sigma Delta ADC, extensive simulations were conducted using Tanner tools with a 0.25µm technology and a supply voltage of 2.5V.
Keywords—Sigma Delta ADC, telescopic op-amp, latch comparator, modulator, integrator, dynamic, low power
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Block Diagram
Specifications
Software Requirements:
· Tool: Lt-spice
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 Analog Electronics
- Knowledge on Flash ADC
- Knowledge on ADC
- Types of ADC
- Applications
- Importance of Transistors
- MOS Fundamentals
- NMOS/PMOS/CMOS Technologies
- How to design circuits using Transistor logic?
- Applications in Real time.
- Ltspice tool for design and simulation
- Solution providing for real time problems
- Project Development Skills:
- Problem Analysis Skills
- Problem Solving Skills
- Logical Skills
- Designing Skills
- Testing Skills
- Debugging Skills
- Presentation skills
- Thesis Writing Skills
Paper Publishing
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