IQS128-00000TSR Azoteq

IQ Switch ProxSense Series IQS128 Datasheet IQ Switch - ProxSense Series Single Channel Capacitive Proximity/Touch Controller The IQS128 ProxSense IC is a fully integrated capacitive sensor implementing Dynamic Calibration (DYCAL) technology: intelligent hysteresis to allow for sensor drift even during sensor activation. Features DYCAL : Intelligent Hysteresis Internal Capacitor Implementation (ICI) reference capacitor on-chip Automatic Tuning Implementation (ATI) - Automatic adjustment for optimal sensor performance Supply voltage: 2.95V to 5.5V Minimum external components 1-Wire open drain data streaming option Advanced on-chip digital signal processing User selectable (OTP): External synchronisation control or External control over filter operation I/O Sink or Source selection Time-out for stuck key Proximity and Touch sensitivity selections Keys: Touch: 5mm x 5mm or larger (overlay thickness dependent) Proximity: Various electrical options (wire / PCB trace / ITO / conductive foil) Dielectric: Material: Various non-metal materials (i.e. glass, plastic, painted surfaces) Thickness: 6 mm plastic, 10 mm glass for touch. Very thick overlay possible for proximity Human Interface Devices Applications Proximity activated backlighting Occupancy sensors Any applications where a touch and SAR qualification for Tablet PCs proximity condition can prevail for an On-ear detection for mobile phones extended period of time with or 3D glasses without a host controller Personal Media Players White goods and appliances Minimal power consumption (<7A) Advantages when in standby mode (Charge Halt). Allows for sensor drift in periods of activation and non-activation Improved digital filtering to reduce external noise Available Options T TSOT23-6 A -40C to 85C IQS128 Copyright Azoteq (Pty) Ltd 2017 IQS128 Datasheet v3.2 Page 1 of 23 All rights reserved Check for latest datasheet August 2017 IQ Switch ProxSense Series Contents 1 OVERVIEW ......................................................................................................................................................... 3 2 PIN-OUT ............................................................................................................................................................. 4 3 USER CONFIGURABLE OPTIONS .......................................................................................................................... 5 4 MEASURING CAPACITANCE USING THE CHARGE TRANSFER METHOD ................................................................ 7 5 DYCAL .............................................................................................................................................................. 8 6 CONFIGURABLE SETTINGS .................................................................................................................................. 9 7 STREAMING MODE ............................................................................................................................................12 8 AUTOMATIC TUNING IMPLEMENTATION (ATI) ..................................................................................................13 9 TYPICAL APPLICATIONS .....................................................................................................................................15 10 ELECTRICAL SPECIFICATIONS .............................................................................................................................16 11 PACKAGING AND PART-NUMBER INFORMATION ..............................................................................................19 12 DATASHEET REVISION HISTORY .........................................................................................................................22 APPENDIX A. CONTACT INFORMATION ..................................................................................................................23 APPENDIX B.............................................................................................................................................................23 Copyright Azoteq (Pty) Ltd 2017 IQS128 Datasheet v3.2 Page 2 of 23 All rights reserved Check for latest datasheet August 2017