A Low-Power Resistance-to-Frequency Converter Circuit With Wide Frequency Range

Koay, Kuan Chuang; Chan, P.K.

doi:10.1109/tim.2015.2444256

Cited by 16 publications

(10 citation statements)

References 22 publications

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“…The proposed converter achieves the same robustness to temperature variations as [21] but without robust sub-circuits, which results in much lower area and power consumption. In [34], a Current-to-Frequency (C-F) converter is proposed, which shows temperature dependence and can be compared with the proposed architecture. As can be seen, the power consumption is higher, and this is because this C-F converter requires high-performance comparators to reduce their offset, which is the main source of drifts against temperature.…”

Section: Resultsmentioning

confidence: 99%

Low-Power Highly Robust Resistance-to-Period Converter

Álvarez-Simón

Gómez-Ramírez

Sanz-Pascual

2018

Sensors

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This paper presents a novel structure of Resistance- to-Period (R-T) Converter highly robust to supply and temperature variations. Robustness is achieved by using the ratiometric approach so that complex circuits or high accuracy voltage references are not necessary. To prove the proposed architecture of R-T converter, a prototype was implemented in a 0.18 μm CMOS process with a single supply voltage of 1.8 V and without any stable reference voltage. Experimental results show a maximum ±1.5% output signal variation for ±10% supply voltage variation and in a 3–95 °C temperature range.

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Section: Resultsmentioning

confidence: 99%

Low-Power Highly Robust Resistance-to-Period Converter

Álvarez-Simón

Gómez-Ramírez

Sanz-Pascual

2018

Sensors

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“…To determine the size of the AlN heat sink, the following procedure was followed. Equation (2) shows the ratio between the heat capacity of the heated area C and the heat conductance between the heat generator and the heat sink K T h [31].…”

Section: Heat Sink For Continuous Current Monitoringmentioning

confidence: 99%

“…Typical requirements for the sensors are a simple structure, wide bandwidth, reliability, low-Temperature Coefficient of Resistance (TCR), low self-heating, and robustness in sensing environment. In the case of transducers, is required a high precision interface insensitive to load and excellent stability from DC to kHz range [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Design of a 1 ampere high-precision thin-film resistive current transducer with negligible frequency dependence from DC to 100 KHz

et al. 2020

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Currently, non-linear loads are found virtually anywhere with the promise of high electrical efficiency. Examples of this type of non-linear loads are compact fluorescent lamps and light-emitting diode lamps which can now be found in any home. However, they produce highly distorted currents that pollute the power grid and cause stability problems, and making the measurement of the distorted electrical current a non-trivial issue. For the reliable measurement of distorted waveforms within a wide bandwidth, magnetic current transducers present disadvantages over resistive current transducers, such as those caused by the magnetic material which attenuates the high-frequency components while producing heating on the magnetic material. This research presents the design principles to develop a thin-film wideband current transducer. Principles such as the selection of high-purity materials, high-symmetry coaxial design, size, geometry, and aspect ratios were used to obtain a linear relationship between its input and output, i.e.: a flat frequency response from DC to 100 kHz, and the ability to operate continuously with a custom passive thermal system for heat dissipation and reliable measurement. An exhaustive effort has been made on the refinement of the design aimed at understanding the effects that govern the frequency behavior of the transducer and the ways to compensate them. The manufacturing feasibility of the proposed design is well confirmed by the results obtained from the simulation process.

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“…The implementation of this DC level shifter is discussed in [6] and [7], and it is shown in Figure 2(c).…”

Section: First Proposed Buffermentioning

confidence: 99%

“…From Equations (7) and (8), it can be concluded that decreasing the input signal leads the transistor M1 into the ohmic region before the transistor M4, thus the transistor M4 doesn't limit the input signal range.…”

Section: First Proposed Buffermentioning

confidence: 99%

Two High Slew Rate Buffers Based on Flipped Voltage Follower

moaf¹,

Piri²,

Amiri³

2016

ijeei

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Two Voltage followers (VF) suited to low-voltage operation and able to operate with a high-slew rate and low-output impedance are presented. The buffer core is based on the flipped voltage follower (FVF) which is previously presented in literature. A detailed comparison of proposed buffers and other voltage followers is presented. These buffers have been simulated using 0.18 µm CMOS technology models provided by TSMC. The buffers consume 10 µA from 1.2 V supply and have a power consumption of 25 µw. The first and second proposed buffers have slew rate of 13 V/µs and 32 V/µs, respectively, with output impedance of about 50 Ω.

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A Low-Power Resistance-to-Frequency Converter Circuit With Wide Frequency Range

Cited by 16 publications

References 22 publications

Low-Power Highly Robust Resistance-to-Period Converter

Low-Power Highly Robust Resistance-to-Period Converter

Design of a 1 ampere high-precision thin-film resistive current transducer with negligible frequency dependence from DC to 100 KHz

Two High Slew Rate Buffers Based on Flipped Voltage Follower

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