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Optocoupler provides high noise immunity

San Jose, Calif.—Fairchild Semiconductor is targeting its FOD8001 optocoupler at industrial system designers engineers looking to design an industrial fieldbus network with low transmission error rates, low system failure rates and proven reliability over an extended period of time.

The company attributes what it claims is best-in-class noise immunity to its proprietary coplanar packaging technology, Optoplanar. Its ICs and LED are assembled on a coplanar process, rather than a face-to-face or over-under process, helping to reduce package capacitance between input and output and improving noise immunity.

It features 25kV/µs@1,500Vcm dynamic Common Mode Transient Immunity (CMTI) rating under high-speed optocoupler switching and 40kV/µs@1,000Vcm static CMTI, making it more resilient to noise.

Its high bandwidth (25Mbps) and tight pulse width distortion (6 nanoseconds) achieves the industry standard for field bus communications in automation technology such as Profibus, DeviceNet, CAN, Modbus, Interbus and many other standards. Its wide supply voltage range from 3V to 5.5V enables easy interfacing with low voltage devices, reducing overall system power. The FOD8001 also supports wide temperature range of -40°C to +105°C.

Pricing: $2.79 each in 1,000-piece quantities.
Availability: Sampling; delivery is 6 weeks ARO.
Datasheet: Click here.

Fairchild Semiconductor, www.fairchildsemi.com

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