Industrial communication design engineers need to send high-speed data through the communication field bus while avoiding damage to sensitive controllers,analog-to-digital converters or sensors.The existing solution is to use two single-channel optical couplers,or other technologies such as magnetic and capacitive coupling,but such methods cannot achieve the required reliable isolation level and anti-electromagnetic interference level.
To help designers cope with the challenge,Fairchild Semiconductor has developed the industry's first full-duplex,bidirectional logic gate optocoupler FOD8012,which has high noise immunity and proven and reliable optical isolation performance,suitable for industry Fieldbus communication,programmable logic control,servo control,and applications such as inverters,factory automation,process control,and test and measurement.
FOD8012 supports digital signal isolation communication between systems,and will not conduct electricity with ground loops or dangerous voltages.Unlike similar devices that provide an optical isolation gap of less than 0.1mm,FOD8012 has an optical isolation gap of 0.4mm(minimum),which can achieve proven and reliable optical isolation.The device also has a conversion speed of up to 15 Mbits/sec,and uses Fairchild’s proprietary Optoplanar packaging technology and optimized integrated circuit design to achieve a high common mode rejection ratio of as low as 20kV/µs.CMR),enabling the device to be used in noisy industrial environments.
FOD8012 high-speed logic gate optocoupler has a high degree of integration,integrates two optical coupling channels in a bidirectional configuration,and adopts a compact 8-pin small package.Each optocoupler channel consists of a high-speed AIGaAs LED,driven by a CMOS buffer IC coupled with a CMOS detector IC.
In addition,FOD8012 has a wide industrial temperature range of-40 to+110ºC,and uses 3.3V or 5V power supply voltage to achieve logic level conversion.The device's high isolation voltage performance has passed UL1577 and IEC60747-5-2 certification,with higher reliability.
FOD8012 is a member of Fairchild Semiconductor’s extensive high-performance optocoupler product line,helping customers achieve design innovation.FOD8012 uses proprietary Optoplanar coplanar packaging technology to obtain the best noise immunity in its class.Optoplanar technology can ensure a safe isolation thickness of more than 0.4mm,and achieve reliable high-voltage isolation that meets UL1577 and IEC60747-5-2 certification standards.