Design of Spurious Dynamic Inverter-Based Level Shifter with Error Tolerance for Robotic Arm Controller
S Vijayakumar1, Lachi Reddy Poreddy2, Mohammed Mahaboob Basha3
1Department of ECE, Sreenivasa Institute of Technology and Management Studies (Autonomous), Chittoor 517127, Andhra Pradesh, India.
Micromachines
|January 8, 2025
Summary
A new dynamic inverter-based level shifter (DIBLS) improves robotic arm controller speed by resolving current disagreement issues. This advanced circuit ensures stable voltage shifting with minimal power consumption.
Area of Science:
- Electrical Engineering
- Computer Engineering
- Integrated Circuit Design
Background:
- Signal level shifting is critical for processor interfacing in robotic arm controllers.
- Traditional level shifters (LS) face challenges like current disagreement and threshold voltage drops.
Purpose of the Study:
- To implement a dynamic inverter-based level shifter (DIBLS) with an error correction circuit.
- To address current disagreement and improve operational speed and stability in level shifters.
Main Methods:
- Developed a dynamic inverter-based level shifter (DIBLS) incorporating an error correction circuit.
- Utilized a feedback inverter controlled by the output node for voltage stabilization.
- Implemented the circuit using 45 nm CMOS technology.
Main Results:
- Achieved notable improvements in operational speed by overcoming threshold voltage drops.
- Ensured complete output voltage swing, enhancing stability.
- Demonstrated efficient voltage shifting (0.3 V to 1.2 V) at 1 MHz with low power consumption (16.57 nW), minimal delay (0.22 ns), and energy per transition (32.25 fJ).
Conclusions:
- The DIBLS effectively resolves current disagreement issues.
- The implemented DIBLS offers significant advantages in operational speed and stability for voltage domain interfacing.
- The design is suitable for low-power, high-speed applications in integrated circuits.
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