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Proximity Capacitive Touch Sensor Platform is Optimized for TV Apps

Thu, 04/14/2011 - 8:53am

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capacitive touch sensor for TV appsSemtech announced a new platform of capacitive sensing ICs optimized for the next-generation of energy-efficient, touch button television applications. The eight-channel SX8660/61 touch sensor platform features integrated LED drivers and an extended, 10cm range of proximity sensing. It is designed to replace legacy mechanical button controllers with an analog output interface (AOI) that supports the use of a buzzer for audible feedback making the platform fully compatible with a wide range of television designs. The capacitive analog interface on the SX8660/61 ICs is designed with an accurate analog-to-digital converter (ADC) that provides desirable sensitivity to work with thick overlay materials (up to 5 mm) for ESD immunity. With current consumption as low as 70 µA at operation, these ICs are asserted to help designers meet the latest energy-efficiency eco-regulations for televisions. The SX8660/61 platform also integrates eight, 256-step LED drivers with individual intensity (linear or logarithmic) fading control that is optimized for human vision. This allows design of buttons that automatically fade on when touched and fade off when released, with interval speed and initial and final light intensity levels set by the designer.

Semtech
805-498-2111,www.semtech.com
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