OPB697BZ

Series:	Photologic®
Part Status:	Obsolete
Sensing Distance:	--
Sensing Method:	Optical Flag
Output Configuration:	Pull-Up Resistor, Inverted
Mounting Type:	Snap-In
Current - Supply:	20mA
Voltage - Supply:	8 V ~ 13.5 V
Response Time:	30ns
Operating Temperature:	-40°C ~ 100°C (TA)
Package / Case:	Module, Connector

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OPB697BZ is an optical sensors collection in the slot type category which not only uses logic outputs but also has its own practical application field and working principles.The OPB697BZ is an opto-electronic device that connects to a microcontroller with a digital output signal. It is designed with a slit-type photo switch (taxocoupler) in which an infrared emitting diode (IRED) is paired with two silicon photodiodes.The main application of the OPB697BZ is related to detection of a slot or slitted object passing by the optical axis, as well as speed detection or position determination. It can be used for a variety of purposes, from high-speed optical data transfer systems, such as fibre-optic communications, to slideway and rotating shafts. In these applications, the OPB697BZ detects the state and position of mechanisms accurately, at the highest speed and highest resolution.The working principles of this device are based on the transfer of optical energy from the IRED diode to the two detectors in the optical axis (Figure 1). When there is none or no object passing between them, the optical energy is completely absorbed by the detectors, creating a logic low signal output. However, when the object is passing in front of the optical axis, some of the energy is blocked by the object, turning the logic output to logic high. This device can be precisely adjusted to allow different widths of the slot and slitted objects can be precisely determined.Figure 1: Working principle of OPB697BZAdditionally, the device provides excellent light sensitivity and high-speed operation with its built-in logic circuit, which performs automatic, faster focusing operations for the two emitting diodes and detectors. It is possible to optically switch two points or to increase the switching speed by using the outputs of both emitters and detectors simultaneously, which makes this device suitable for a variety of applications.The OPB697BZ is built to resist environmental vibrations and also has a high temperature operation range up to +100°C. The wide temperature range makes it suitable for automobile interior applications, where it is used to monitor passing objects in engine crank shafts.In summary, the OPB697BZ is an optical sensor from the slot type category with its own practical application field and working principles. This device is used for a range of applications from high-speed optical data transfer systems to rotary shaft speed detection, and helps to accurately detect the state and position of mechanisms. Additional features include excellent light sensitivity, high temperature range, environmental resistance, and the ability to work at the highest speed, resolution, and accuracy.

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