A current conveyor design in wide bandwidth isolation amplifier

Lin, Chin‐Tarng; Hou, An Sang; Hsu, Kai Shun

doi:10.1109/imtc.2003.1207905

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Traditional optical isolation amplifier is based on transimpedance amplifier. e coupling signal is analog signal, which is still seriously disturbed by circuit and environmental noise [5][6][7]. Recently, the sigma delta modulator and the digital-to-analog converter (DAC) are adopted for the transmitter and the receiver, respectively.…”

Section: Introductionmentioning

confidence: 99%

A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier

Chen

Bai

Zhu

et al. 2020

Journal of Electrical and Computer Engineering

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A wide-band and high-resolution transmitter of optical isolation amplifier is proposed for switching power supply isolation and servo motor drive applications. The transmitter is based on the chopper-stabilized technique and sigma delta modulator. A built-in common-mode voltage circuit of switched capacitor is proposed to ensure the stability of input DC common mode. Meanwhile, the feedback capacitor is used to improve the driving ability, which helps to avoid a buffer with large input swing. The circuit is tapeout with GF CMOS 0.18 μm 1P6M process with 5 V power supply. The test results show that in 5 V supply voltage, the input swing of transmitter is 2 V and the effective signal bandwidth is 110 kHz. And the output resolution achieves 11 bit.

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Section: Introductionmentioning

confidence: 99%

A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier

Chen

Bai

Zhu

et al. 2020

Journal of Electrical and Computer Engineering

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“…Optocouplers are very often used in many electronic and power electronic circuits, since they assure simple galvanic separation of two circuits [1][2][3][4][5][6][7][8][9][10], e.g. an input circuit from a power circuit in dc-dc converters [1,2,4,6,7,9,10].…”

Section: Introductionmentioning

confidence: 99%

Electrothermal model of optocoupler for SPICE

Górecki

Stepowicz

2008

Int J Numerical Modelling

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SUMMARYIn the paper a new electrothermal model of the optocoupler for SPICE is proposed. The model is based on electrical models of the LED and the bipolar phototransistor with their parameters dependent on temperature, their thermal models including both the self-heating phenomenon and the mutual thermal interactions between the LED and the phototransistor, and the dependences describing electrical power dissipated in these components. The final form of the electrothermal model of the optocoupler elaborated by the authors, dedicated to the d.c. and a.c. computations, was implemented in SPICE. The usefulness of the new model was experimentally verified for the optocoupler 4N25.

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Górecki

Stepowicz

2009

Int J Numerical Modelling

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A current conveyor design in wide bandwidth isolation amplifier

Cited by 3 publications

References 3 publications

A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier

A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier

Electrothermal model of optocoupler for SPICE

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