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Optical Isolation Amplifiers

Photonics Spectra
Apr 2011
Broadcom Ltd.Request Info
 
Avago Technologies has announced precision optical isolation amplifiers for motor control and current-sensing applications. The ACPL-790B, ACPL-790A and ACPL-7900 devices improve the accuracy and response times of the company’s isolation amplifiers while addressing compact applications with a smaller footprint package. They are suitable for current and voltage sensing in AC and brushless DC motor drives, industrial inverters, servo motor drives, wind power generation, solar panel power systems and general analog isolation. As current flows through the external resistor in a motor drive implementation, the resulting analog voltage drop is sensed by the isolation amplifiers, and they allow a proportional output voltage to be created safely on the other side of the optical isolation barrier.


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