Azoteq Announces IQS253 Ultra Low Power Capacitive Proximity and Touch Controller for Cell Phones and Tablets

The Azoteq IQS253 three-channel capacitive proximity and touch controller offers proximity sensing at 6 microampere

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IQS253

Azoteq controllers are widely used in tablets to meet FCC SAR requirements, and the IQS253 opens up new applications such as handheld detection, on-ear detection and proximity wake-up in cell phones and tablets

Austin, TX (PRWEB) February 09, 2012

Azoteq, the world leader in capacitive proximity sensing, today announced the IQS253, Azoteq’s latest addition to the ProxSense® family of capacitive proximity and touch controllers. The IQS253 sets new standards for proximity and touch sensing, with power consumption of 6 microampere, which is 20 to 50 times better than that of competitive devices.

Azoteq is the first to introduce a low pin-count capacitive controller that features projected (mutual) capacitance and self-capacitance in the same controller. The IQS253 uses advanced analog and digital circuitry to achieve unparalleled proximity and touch performance. The high sensitivity enables the IQS253 to work reliably through glass of up to 25 mm thick and achieves proximity detection of up to 250 mm with practical electrodes. The device can operate from 1.8 to 3.6V and achieves power consumption as low as 6 microampere while still sensing proximity and touch. The I2C compatible interface allows full control of the controller functions from a host microcontroller. The IQS253 features Azoteq’s patented DYCAL™ algorithm, which allows the sensor to track environmental changes during prolonged periods of activation.

“Azoteq controllers are widely used in tablets to meet FCC SAR requirements, and the IQS253 opens up new applications such as handheld detection, on-ear detection and proximity wake-up in cell phones and tablets,” said Jean Viljoen, Marketing Manager for Asia.

During the first and second quarters of 2012, Azoteq will release a full family of controllers based on the latest ProxSense® technology. The family will be expanded to include stand-alone controllers with up to 12 channels.

Functions:

  •     Three-channel input device
  •     Projected (mutual) capacitance or self-capacitance
  •     Proximity and touch on each channel
  •     Distributed proximity channel formed by multiple keys
  •     I2C interface
  •     Automatic tuning to optimum sensitivity
  •     Supply voltage of 1.8V to 3.6V
  •     Multiple low-power modes
  •     Internal voltage regulator and reference capacitor
  •     Large proximity-detection range
  •     Automatic drift compensation
  •     MSOP-10 and DFN(3x3)-10

Applications:

  •     Smart phones, tablet PCs
  •     Remote controls
  •     Consumer electronics – TVs, Blu-Ray players, set-top boxes
  •     White goods and appliances
  •     Office equipment, toys, sanitary ware
  •     Proximity detection that enables activation of backlighting
  •     Wake-up from standby applications
  •     Replacement for electromechanical switches
  •     GUI trigger and GUI control proximity detection

Further information
The IQS253 datasheet is available at http://www.azoteq.com. Further information on the application of the DYCAL™ algorithm is available here.

Pricing and availability
The IQS253 will be priced at $0.31 in 1K quantities. Samples and production are available now.

About Azoteq (Pty) Ltd
Azoteq (Pty) Ltd (http://www.azoteq.com) is the world leader in capacitive proximity solutions for switches, sliders, scroll wheels and touch screens in consumer and industrial applications. Azoteq has design and manufacturing centers in South Africa and China. Azoteq has sales offices and distributors in South Africa, Asia, Europe and the USA.

Azoteq’s novel technology is protected by numerous patents, both issued and pending. A list of patents is available at http://www.azoteq.com/capacitive-proximity-touch/capacitive-touch-sensor.html

IQ Switch®, ProxSense®, LightSenseTM, AirButton®, DYCALTM and the IQ logo are trademarks of Azoteq (Pty) Ltd.

Editorial contact and interviews:
Kobus Marneweck
+1-512-538-1995    
kobusm(at)azoteq(dot)com
http://www.azoteq.com
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