OPI1266

Data Rate:	500kbps
Supplier Device Package:	--
Package / Case:	5-DIP
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 70°C
Voltage - Supply:	7V
Current - DC Forward (If) (Max):	50mA
Voltage - Forward (Vf) (Typ):	1.2V
Rise / Fall Time (Typ):	--
Propagation Delay tpLH / tpHL (Max):	800ns, 800ns
Series:	--
Output Type:	Open Collector, Schottky Clamped
Input Type:	DC
Common Mode Transient Immunity (Min):	--
Voltage - Isolation:	16000VDC
Inputs - Side 1/Side 2:	1/0
Number of Channels:	1
Part Status:	Active
Packaging:	Bulk

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Optoisolators - Logic Output: OPI1266 Application Field and Working Principle

Optoisolators are electrical components used to isolate signal lines from one another due to electrical noise. They are used in a wide variety of devices and applications, such as automotive, industrial, and medical. The OPI1266 is a logic output optoisolator specifically designed for applications that require an increased isolation voltage of up to 300Vrms across the supply and signal pins. This optoisolator contains a light emitting diode (LED) that provides a constant current into a matched photo-detector.

Application Field

The OPI1266 optoisolator is designed to isolate single-ended data lines in automotive infotainment, radio, audio systems, as well as industrial communication systems including fieldbus and sensor connection. The device can also be used as input/output interfaces in medical and industrial automation systems where signal isolation and noise immunity is required.

Working Principle

The OPI1266 optoisolator works by isolating two circuits from each other using a light emitting diode (LED) and a photocoupler. The LED provides a constant current to a matched photo-detector. This constant current produces a voltage across the series bound photoconductor. The voltage rises with increasing LED current, and at a certain threshold, the output transistor is triggered into saturation.The optoisolator isolates the two circuits from each other due to the non-conductive, non-magnetic gap between the LED and photocoupler. This gap increases the isolation voltage and greatly reduces electrical noise across the two circuits. Additionally, the optoisolator provides dual channels with independent outputs for input/output interfaces. The maximum AC/DC breakdown voltage is 500V between the input and output pins, and the current transfer ratio of the optoisolator is up to 130%.

Conclusion

The OPI1266 optoisolator is a useful device for applications that require increased signal isolation and noise immunity. This optoisolator is designed for use in a variety of settings including automotive infotainment systems, industrial communication and automation systems, and medical settings. It provides two channels with independent outputs and has a maximum AC/DC breakdown voltage of 500V. Additionally, the optoisolator provides a current transfer ratio of up to 130% for increased signal isolation and noise immunity.

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