A power-efficient wide-range signal level-shifter

Maghsoudloo, Esmaeel; Rezaei, Masoud; Gosselin, Benoît

doi:10.1109/newcas.2015.7182025

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Unfortunately, this comes at the cost of a very high propagation delay. The circuits proposed in [8–10, 22], all utilise current mirror to perform voltage conversion, which have a considerable improvement in speed performance and also have very low allowable minimum V DDL , but with significant energy and area sacrificed. On the contrary, voltage latch scheme is used in [6, 13–15, 21, 23] to realise voltage conversion.…”

Section: Measured Results and Comparisonsmentioning

confidence: 99%

“…Moreover, the design of [21] is completely identical to [14], just taking advantage of reverse body biasing and thin/ thick-oxide transistors to realise a voltage conversion from 0.12 to 1.2 V. However, it sacrifices with propagation delay. In [22], a level-shifting capacitor together with current mirror is employed to achieve a wide conversion range and reduced power consumption, but at the cost of the tradeoff in area due to the capacitor.…”

Section: Research Articlementioning

confidence: 99%

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Sub‐threshold level converter with internal supply feedback for multi‐voltage applications

Wen

Zeng

2017

IET Circuits, Devices & Systems

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A new sub-threshold level shifter for ultra-low voltage digital systems is presented in this study. The selfcontrolled supply feedback loop is quintessential for this circuit. Measured results from a test chip show that it is capable of realising a voltage conversion from a voltage as low as 0.1-1.2 V reliably, while maintaining an operational frequency of 25.2 kHz, when implemented in a 65-nm process technology. In addition, it also has ample process variation tolerance and low static power consumption. To support multi-voltage digital systems, the proposed level converter can up-convert an input at any voltage with this range to normal voltage domains.

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Section: Measured Results and Comparisonsmentioning

confidence: 99%

Section: Research Articlementioning

confidence: 99%

Sub‐threshold level converter with internal supply feedback for multi‐voltage applications

Wen

Zeng

2017

IET Circuits, Devices & Systems

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“…Moreover, the power consumption is inefficient due to the large short-circuit current. To solve these problems, several LSs have been investigated in [1,2,3,4,5,6,7,8,9,10]. Generally, these schemes can be summarized in three categories: the current mirror structure [1,2,3,4], the cross-coupled latch structure [5,6,7,8], and the hybrid voltage-current structure [9,10].…”

Section: Introductionmentioning

confidence: 99%

A single-supply sub-threshold level shifter with an internal supply feedback loop for multi-voltage applications

Liu

Zeng

et al. 2018

IEICE Electron. Express

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A single-supply level shifter with an internal supply feedback loop, which can shift an input signal from the sub-threshold level to the above-threshold level, is presented in this paper. This level shifter has a wider voltage conversion, less transmission delay, higher energy efficiency, and more flexibility in the physical layout than those described in previous citations. The proposed level shifter can convert a 210-mV input signal into a 1.2-V output signal across process corners with a flexible physical layout when implemented in 65-nm LP technology. For a voltage of 0.2 V, the circuit has a propagation delay of 19.4 ns, a static power dissipation of 1.84 nW, and an energy consumption per transition of 82.2 fJ for a 1-MHz input signal. Due to these excellent characteristics, the proposed design is particularly suitable for applications in multi-voltage digital systems.

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