Azoteq announces the IQS223, a three-channel capacitive proximity and touch controller.

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Azoteq announces the IQS223, a three-channel capacitive proximity and touch controller with on-chip gestures to replace mechanical buttons in Bluetooth audio applications.

Azoteq IQS223 for Bluetooth audio UI.

Azoteq IQS223 for Bluetooth audio UI.

Its low-power active-sensing capabilities and direct IOs, which emulate tactile buttons, make it the perfect user-interface upgrade for simple ROM-based Bluetooth Audio ICs.

Azoteq, a pioneer in sensor fusion, today announced the release to market of the IQS223. The IQS223 ProxSense® IC is a three-channel self-/projected capacitive proximity and touch controller with best-in-class sensitivity, signal-to-noise ratio and power consumption, aimed at the TWS and Bluetooth audio markets.

The IQS223 was designed to replace mechanical buttons on Bluetooth consumer electronics, such as true wireless stereo (TWS) earbuds. “Instead of awkward mechanical buttons, one can now have a zero-force human-machine interface with touch buttons and sliders. Its low-power active-sensing capabilities and direct IOs, which emulate tactile buttons, make it the perfect user-interface upgrade for simple ROM-based Bluetooth Audio ICs,” says Jean Viljoen, Azoteq’s VP of Marketing.

Other features include automatic tuning of the sense electrodes, an internal reference capacitor, and an internal regulator to reduce total system cost. It has low power consumption, of less than five micro-amperes.

Samples, production quantities and evaluation kits are available through Azoteq’s distribution channels and popular online distributors.

Main features

> Three-channel self- or projected capacitive controllers
> One global proximity wake-up channel (CH0)
> Four GPIO gesture output pins (80 ms pulses; active high)
> Configurable one-dimensional flick or swipe gesture detection with individual direction output pins
> Tap and hold gesture recognition and output
> Two GPIO strap option input pins for sensitivity selections
> 72 Hz normal power (maximum) sampling rate
> On-chip noise filters and calibration algorithm
> Automatic adjustment for optimal performance (ATI)
> Automatic drift compensation
> User-selectable proximity and touch thresholds
> Low power options for extensive power saving or wake-up response, suitable for battery applications
> Supply voltage range: 1.8 V to 3.3 V
> Less than 5 µA active sensing in low-power mode
> Less than 200 µA normal mode operation at a 72 Hz sampling rate

Applications
> Mechanical key replacement for TWS
> Volume control for earphones
> MP3 players
> Portable electronics
> Wearable electronics

About Azoteq (Pty) Ltd

Azoteq (http://www.azoteq.com) is a pioneer in sensor fusion. With more than a decade of capacitive-sensing experience, the sensor offering is now expanded to include multi-sensor technologies on single ICs. The first generation of ProxFusion® offers capacitive, Hall-effect, IR, PIR, inductive and ambient-light sensing. Azoteq has design and manufacturing centers in South Africa and China, and sales offices and distributors in South Africa, Asia, Europe and the USA.

IQ Switch®, ProxSense®, ProxFusion®, LightSense™, AirButton®, Crystal-IQ® and DYCAL™ are trademarks of Azoteq (Pty) Ltd.

Editorial Contact & Interviews

Jean Viljoen
+27 21 863 0033
http://www.azoteq.com    

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Jean Viljoen
Azoteq
+27 21 8630033
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