A simple rail‐to‐rail CMOS voltage follower

Kasemsuwan, Varakorn; Nakhlo, Weerachai

doi:10.1108/13565360910923124

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…Examples include liquid crystal display drivers [1], [2], low-dropout regulators [3], [4], and analog testing and signal monitoring [5]. Class-AB buffers are usually preferred for their high power efficiency and low harmonic distortion [6]. In Fig.…”

Section: Introductionmentioning

confidence: 99%

A Compact Rail-to-Rail Class-AB CMOS Buffer With Slew-Rate Enhancement

Sawigun

Demosthenous

Liu

et al. 2012

IEEE Trans. Circuits Syst. II

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Two prior-art transconductance amplifier-based rail-to-rail class-AB analog buffers are examined. Their analysis reveals that the output current drive capability for large input voltages is restricted. To mitigate this drawback, a relatively simple slew-rate enhancement scheme is proposed. The new scheme allows the buffer's speed to be increased by over 200% with only a very small increase in static power consumption (1.25%) and silicon area (3%). The proposed and the two conventional buffers were fabricated in a 0.35-μm CMOS technology for a power supply of 3 V. Measurements verify the superior slew-rate performance of the new buffer for rail-to-rail step responses.

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Section: Introductionmentioning

confidence: 99%

A Compact Rail-to-Rail Class-AB CMOS Buffer With Slew-Rate Enhancement

Sawigun

Demosthenous

Liu

et al. 2012

IEEE Trans. Circuits Syst. II

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Fuzzy-set based approach to compute optimum sizes of Voltage Followers

Flores-Becerra

Polanco-Martagón

Tlelo‐Cuautle

2009

2009 16th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2009)

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Appropriate Cardiac Phase for Measurement of ADC of the Brain Using ECG-Triggered Diffusion MRI

Kan

Miyati²,

Mase³

et al. 2011

Nippon Hoshasen Gijutsu Gakkai Zasshi

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Apparent diffusion coefficients (ADCs) are sometimes overestimated when they are measured in the brain near the basal ganglia because water molecules in brain tissues fluctuate with blood volume loading in the cranium. We determined detailed ADC changes during the cardiac cycle to evaluate the appropriate cardiac phases for accurate measurement of ADC values. Using 1.5 T MRI, we performed ECG-triggered single-shot EPI to obtain ADC maps in each cardiac phase using techniques minimizing the bulk motion effect. The coefficient of variation (CV) of the ADC values during the cardiac cycle was over 50% near the basal ganglia. Moreover, the cardiac phase of the peak ADC value during the cardiac cycle was from 10 to 40% cardiac phases that follow systole. However, the CV of the ADC values of whole cardiac phases was higher than those with phases over 50% of the cardiac cycle near the basal ganglia because the effect of water fluctuation was almost eliminated. Therefore, accurate measurement of ADC values should be obtained from ADC maps of phases over 50% of the cardiac cycle.

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A simple rail‐to‐rail CMOS voltage follower

Cited by 3 publications

References 14 publications

A Compact Rail-to-Rail Class-AB CMOS Buffer With Slew-Rate Enhancement

A Compact Rail-to-Rail Class-AB CMOS Buffer With Slew-Rate Enhancement

Fuzzy-set based approach to compute optimum sizes of Voltage Followers

Appropriate Cardiac Phase for Measurement of ADC of the Brain Using ECG-Triggered Diffusion MRI

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