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Vishay optical sensor works with ELMOS HALIOS tech

Posted: 17 Feb 2005 ?? ?Print Version ?Bookmark and Share

Keywords:reflective optical sensor? optical sensor? vishay intertechnology? tcnd3000? elmos semiconductor?

A new miniature reflective optical sensor capable of operating in bright sunlight was announced by Vishay Intertechnology Inc. The TCND3000 surface-mount optical sensor integrates touch and proximity functions and operates in conjunction with an integrated circuit (E909.01) built on ELMOS Semiconductor's HALIOS (High Ambient Light Independent Optical System) technology to provide reliable operation in very bright sunlight up to 200kLux.

Offering designers a low-cost alternative to mechanical switches, members of the TCND3000 series enable improvements in the design and functionality of electronic systems such as mobile phones, automotive systems, home appliances and cameras, said Vishay. The device also combines an IR emitter as the source for the touch/proximity signal, another for compensation for ambient light, and a photo diode as the receiver for the touch/proximity signal.

Working with the new electrical signal evaluation system provided by the ELMOS E909.01 IC, the TCND3000 solution allows contact-free detection of movement through a translucent surface, enabling proximity detection at a distance of 2cm and touch detection at a distance of 1cm from the sensor surface. As a result, the company said, the sensor may be contained within a clear protective or decorative casing without loss of sensitivity.

Measuring 5-by-2.6mm with a height profile of 3mm, these RoHS-compliant sensors are available in a Pb-free, surface-mount-style package constructed on PCB mold technology. Each product features a 5V operating voltage, a 20 angle of half-sensitivity, an 870nm operating wavelength, and an operating temperature range of -40C to 85C. Devices in the new series are designed for IR reflow soldering with a peak temperature of 260C and therefore are suitable for Pb-free solder processes.

Samples and production quantities of the new TCND3000 optical sensors are already available with lead times of 8 to 12 weeks for larger orders.

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