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IQS3160QFMOQ Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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IQS3160QFMOQ Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
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3 / 28 page  IQ Switch ® ProxSense ® Series Copyright © Azoteq (Pty) Ltd 2015 IQS316 Datasheet Page 3 of 28 All rights reserved. Revision 1.03 November 2015 1 Overview The IQS316 is a multi-key capacitive sensing controller designed for touch applications requiring up to 16 touch inputs. The device has proximity (PROX) detection integrated with the existing 16 touch sense electrode, providing a total of 4 additional PROX channel outputs. The electrodes used for PROX are selectable, to allow keys in noisy/unreliable areas to not influence the PROX stability and sensitivity. All 20 device channels (16 touch, 4 proximity) can be individually configured. It can be selected that 4, or 8 of the channels are setup to be used as general purpose I/O‟s. Functions such as simple LED control can be implemented with these I/O‟s. The device has an internal voltage regulator and Internal Capacitor Implementation (ICI) to reduce external components required. Advanced on-chip signal processing capabilities and a dedicated PROX charging mode yields a stable capacitive controller with high sensitivity. With the charge transfer method implemented, each sensor (key) can be viewed as the positive plate of a capacitor and the environment as the negative plate (virtual ground reference). When a conductive object such as a human finger approaches the sensor, it will increase the detected capacitance. Advanced signal processing is implemented to suppress and detect noise, track slow varying environmental conditions, and avoid effects of possible drift. The Antenna Tuning Implementation (ATI) allows for adapting to a wide range of application environments, without requiring external components. The device provides active driven shields to protect the integrity of sensor line signals if required. The device has a high immunity to RF interference. For severe conditions, the RF detection pin allows for noise detection when connected to a suitable RF antenna, providing suppression of noise on the influenced data. The IQS316 provides SPI and I 2C communication options. A typical implementation of a 16 key touch panel is shown in Figure 1.1. |
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