Fairchild Semiconductor’s Industry-First Bi-Directional Logic Gate Optocoupler Provides Proven, Reliable Optical Isolation
January 17 2011 - 11:01AM
Business Wire
Design engineers working with industrial communication designs
need to transmit high speed data over the communication fieldbus
without the risk of damaging sensitive controllers, ADCs or
sensors. The current solution uses two single-channel optocouplers
or other technology, like magnetic or capacitive coupling. But this
does not provide the desired level of reliable isolation and
immunity to EMI.
Fairchild Semiconductor’s Industry-First
Bi-Directional Logic Gate Optocoupler Provides Proven, Reliable
Optical Isolation (Photo: Business Wire)
To help designers meet this challenge, Fairchild Semiconductor
(NYSE: FCS) developed the FOD8012 – an industry-first, full duplex,
bi-directional, logic gate optocoupler with high noise immunity as
well as proven, reliable optical isolation. This bi-directional
optocoupler is ideal for industrial fieldbus communications,
programmable logic control, and servo control, as well as inverter,
factory automation, process control and test and measurement
applications.
The FOD8012 supports isolated communications of digital signals
between systems without conducting ground loops or hazardous
voltages. Unlike competitive devices which provide less than 0.1mm
optical isolation gap, the FOD8012 features a 0.4mm (minimum)
optical isolation gap for proven, reliable isolation. The device
also features a fast switching speed, up to 15Mbit/sec, and uses
Fairchild’s proprietary Optoplanar® packaging technology and
optimized IC design to achieve high common mode rejection (CMR) of
20kV/µs minimum, allowing the device to operate in noisy industrial
environments.
This high-speed logic gate optocoupler is highly integrated with
two optically coupled channels arranged in a bi-directional
configuration, and housed in a compact 8-pin small outline package.
Each optocoupler channel consists of a high-speed AIGaAs LED,
driven by a CMOS buffer IC coupled to a CMOS detector IC.
Additionally, the FOD8012 offers an extended industrial
temperature range of -40 to +110ºC and a 3.3V or 5V supply voltage
to facilitate logic level translation. The device’s high isolation
voltage is certified by UL1577 and IEC60747-5-2 for increased
reliability.
Fairchild enables customers to drive innovation in their designs
by developing solutions like the FOD8012 – which is part of
Fairchild’s comprehensive portfolio of high performance
optocouplers. The FOD8012 offer best-in-class noise immunity
resulting from its proprietary Optoplanar coplanar packaging
technology. The Optoplanar technology ensures safe insulation
thickness of more than 0.4 millimeters in attaining reliable high
voltage isolation, certified by UL1577 and IEC60747-5-2
standards.
Price (each, 1k pcs.): FOD8012 = $3.08
Availability: Samples available now
Delivery: 8-10 weeks
Contact Information:
To contact Fairchild Semiconductor about this product, please go
to: http://www.fairchildsemi.com/cf/sales_contacts/.
For information on other products, design tools and sales
contacts, please visit: http://www.fairchildsemi.com.
Note to Editor: For a datasheet in PDF format, please go
to:
http://www.fairchildsemi.com/ds/FO/FOD8012.pdf
About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) – global presence, local
support, smart ideas. Fairchild delivers energy-efficient,
easy-to-use and value-added semiconductor solutions for power and
mobile designs. We help our customers differentiate their products
and solve difficult technical challenges with our expertise in
power and signal path products. Please contact us on the web at
www.fairchildsemi.com.
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