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A High-Speed and Ultra Low-Power Subthreshold Signal Level Shifter.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . May2017, Vol. 64 Issue 5, p1164-1172. 9p. - Publication Year :
- 2017
-
Abstract
- In this paper, we present a novel level shifter circuit converting subthreshold signal levels to super-threshold signal levels at high-speed using ultra low-power and a small silicon area, making it well-suited for low-power applications such as wireless sensor networks and implantable medical devices. The proposed circuit introduces a new voltage level shifter topology employing a level-shifting capacitor contributing to increase the range of conversion voltages, while significantly reducing the conversion delay. Such a level-shifting capacitor is quickly charged, whenever the input signal detects a low-to-high transition, in order to boost internal voltage nodes, and quickly reach a high output voltage level. The proposed circuit achieves a shorter propagation delay and a smaller silicon area for a given operating frequency and power consumption compared to other circuit solutions. Measurement results are presented for the proposed circuit fabricated in a 0.18- \mu \text m TSMC technology. The proposed circuit can convert a wide range of the input voltages from 330 mV to 1.8 V, and operate over a frequency range of 100 Hz to 100 MHz. It has a propagation delay of 29 ns and a power consumption of 61.5 nW for input signals 0.4 V, at a frequency of 500-kHz, outperforming previous designs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CAPACITORS
*ARTIFICIAL implants
*WIRELESS sensor networks
Subjects
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 64
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 122661936
- Full Text :
- https://doi.org/10.1109/TCSI.2016.2633430