IQS229 DFN Azoteq

ProxSense Series IQS229 Datasheet Single Channel Capacitive Proximity/Touch Controller for SAR Applications The IQS229 ProxSense IC is a self-capacitance controller designed for applications that are required to meet SAR regulations. The IQS229 can also be used to detect a long term presence as a movement detector. The IQS229 operates standalone and can be configured via digital inputs. Features RoHS2 Compliant SAR compliance in mobile devices according to the IEC 62209-2 ed1.0 IQS229 DFN10 standard and the FCC standard (KDB Representations only, not actual markings 616217 - D04 SAR for laptop and tablets v01) Failsafe firmware/hardware design Automatic Tuning (ATI) On-chip movement detection algorithm Minimal external components Standalone operation 25mm detection distance Activation time-out Up to 60pF sensor load Supply voltage: 1.8V to 3.6V Internal Capacitor Implementation (ICI) Low power consumption: 30uA (sub 10uA reference capacitor on-chip in sleep mode) Configuration settings via external pins Low profile DFN10 package (3x3) Activation threshold Movement filter threshold Applications SAR detection for tablets and mobile Reed relay replacement phones White goods and appliances SAR detection for wireless charging Human Interface Devices stations (operating frequency > 100 MHz) Proximity activated backlighting SAR detection for USB dongle-type Applications with long-term activation devices Movement detection devices (anti-theft) Available Packages T DFN10 (3x3) A -40C to 85 C IQS229 Copyright Azoteq 2016 IQS229 Datasheet Extended v1.9 Page 1 of 24 All Rights Reserved Check for latest datasheet March 2016 ProxSense Series Figure 1.1 Flow diagram of the IQS229 user interface 1.1.1 Normal operation 1 Overview With a normal activation (hand brought close) the output will become active. The 1.1 Device output will de-activate as soon as the action The IQS229 is a device tailored for long- is reversed (hand taken away). In addition a term proximity or touch activations. It offers separate movement output will become two Boolean outputs, one with an activation active when movement is detected threshold for large capacitive shifts and the according to a movement threshold. other with a threshold for small movements Movement may be detected before the even during a normal activation. normal threshold is crossed. Movement COUNTS (Capacitance) LONG TERM AVERAGE Cross threshold Threshold before time-out Time MOV OUT pin OUT pin Timer Reset Sensor ACTIVATION RELEASE Figure 1.2 Plot of IQS229 streaming data along with the digital response Copyright Azoteq 2016 IQS229 Datasheet Extended v1.9 Page 2 of 24 All Rights Reserved Check for latest datasheet March 2016 COUNTS (Capacitance)