A Wide-Range Static Current-Free Current Mirror-Based LS With Logic Error Detection for Near-Threshold Operation
Objective
The objective is to propose a current mirror-based level shifter (LS) with a logic error detection (CMLS-LED), which is capable of converting a near-threshold signal to a super-threshold signal.
Abstract
We propose a novel level shifter (LS) named Current Mirror-based Level Shifter with Logic Error Detection (CMLS-LED). This innovative design effectively transforms a near-threshold signal into a super-threshold signal. Unlike conventional Cross-Coupled pmos-based LS (CPLS), CMLS-LED overcomes the current contention issue by leveraging a current mirror. Additionally, it eliminates static current in the conventional current mirror LS by incorporating a feedback pmos controlled by the output node.
In comparison to Wilson's Current Mirror-based LS (WCMLS), CMLS-LED demonstrates superior speed by circumventing the threshold voltage drop of the feedback pmos. Moreover, it avoids stability concerns associated with incomplete output swing. Experimental results from a test chip and implementing CMLS-LED alongside WCMLS, CPLS, and Osaki's LS, reveal compelling advantages. CMLS-LED extends the operating voltage range by 200 mV compared to CPLS and exhibits an improvement in speed compared to WCMLS.
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Block Diagram
Specifications
Software Requirements:
Ø Cadence virtuoso
Ø Technology files: GPDK90nm
Hardware Requirements:
Ø Microsoft® Windows XP
Ø Intel® Pentium® 4 processor or Pentium 4 equivalent with SSE support
512 MB RAMLearning Outcomes
Ø Introduction to Digital electronics
Ø Importance of Transistors
o MOS Fundamentals
o NMOS/PMOS/CMOS Technologies
o How to design circuits using Transistor logic?
o Scope of Level shifters in today’s world
o Applications in Real time.
Ø Cadence tool for design and simulation
Ø Solution providing for real time problems
o 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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