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Digital optical isolator includes guaranteed operation as low as 2.7V

Wed, 09/25/2013 - 3:52pm

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IXYS Integrated Circuits Division announced the immediate availability of a new device for its family of high speed communication ICs, the CPC5001 Dual, One-Channel Each Direction Digital Optical Isolator.

The CPC5001 is a non-inverting logic-signal isolator with buffered-logic inputs and open-drain outputs. Channel 1 propagates a signal from Side A to Side B, while Channel 2 sends a signal from Side B to Side A. The CPC5001 supports 5M baud data rates for digital communications over an optical barrier while providing 3750 Vrms of galvanic isolation.  

Available in an 8-pin DIP or 8-pin surface mount package, it functionally replaces two logic buffers and two single-channel optical isolators. Internal band gap references regulate the input LED drive currents to 3 mA to reduce peak power requirements.

While competitive devices work with a minimum supply of 3.0V, the CPC5001 offers a higher degree of design flexibility with guaranteed operation as low as 2.7V. The wide operational power supply range specification of 2.7V to 5.5V enables logic-level translation applications. This device is compatible with the IXYS-Zilog line of MCUs for ‘isolated’ digital control in a wide range of applications in power management, process control, LED lighting control, battery power management, industrial and motor control.

Unlike magnetically isolated digital isolator ICs, transformers, or capacitive isolators, the CPC5001 optical solution requires no internal clocking (a primary source of EMI/RFI interference in designs) and supports direct coupled logic-level isolation without refresh clocks. Input noise rejection (hysteresis) makes the CPC5001 ideal for the industrial power distribution market. The CPC5001 utilizes slew limited output stages to reduce radiated emissions. In addition, the unique design of the CPC5001 optical isolator offers excellent reliability and long operational life. 

The CPC5001 Dual High-Speed Digital Optical Isolator is ideal for clock, data, interrupt and reset signals in isolated line receiver and bus receiver applications. The device may be used in Power-over-Ethernet (POE) applications, providing buffering and isolation of signals between the host controller and the Power Supply Equipment (PSE) controller. Additional applications include SPI bus interface, power supply high side interface and isolated signal monitoring and control. The CPC5001 is certified to UL 1577 and EN/IEC 60950.

 

Additional information about IXYS Integrated Circuits Division and IXYS may be found at www.ixysic.com

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