Optoisolator Delivers Up To 16kV Isolation At 2Mbd

Optek's new OPI1268 16kV high-voltage optical isolator, available via Pacer, delivers AC and DC voltage isolation up to 16kV while achieving digital data transmission rates of 2MBd. The OPI1268 UL-recognised high-voltage optoisolator is designed for power isolation in high-voltage PC board circuits in industrial electronics systems, medical electronic equipment and office machines.

The output IC detects the incoming optical signal and converts it to a proportionate current, which is fed through a high-gain linear amplifier and compensated for temperature, current and voltage, resulting in a stable digital output with an open collector inverter configuration. The OPI1268 optoisolator combines a high-efficiency gallium aluminium arsenide (GaAlAs) light-emitting diode (LED) with a peak wavelength of 850nm, optically coupled to a Photologic photodiode in the output IC.

Forward current (IF) is 10mA typical/50mA maximum, with typical propagation delays (tPHL-tPLH) less than or equal to 500ns. The creepage distance/air path is 0.970in (24.64mm) and the devices are UL recognised under file E58730. Packaged in an opaque high-dielectric plastic housing, the OPI1268 device measures 27.94 x 6.35 x 8.89mm and has a five-lead configuration (cathode, anode, Vcc, output and ground). The operating temperature range is from -40C to +100C. Data and samples are available now from Pacer.


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