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Optimizing High-Voltage Common Mode Rejection Performance of the APCL-x6xL Ultra-Low Power Optocouplers

Authored on: May 25, 2012 by Yee Chee Weng, Peng Jia

Technical Paper

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The ACPL-x6xL products are optically coupled ultra-low power 10 MBd digital CMOS opto couplers that operate with low power consumption, especially when the light emitting diode (LED) operates at low current. When a current is applied to drive the LED, common mode rejection (CMR) can be affected by leakage paths inherent to the LED. This paper describes the optimization of CMR performance with split limiting resistors at the LED.

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