Azoteq IQS127D IQS127D Datasheet IQ Switch - ProxSense Series Single Channel Capacitive Proximity/Touch Controller The IQS127D ProxSense IC is a fully integrated capacitive sensor with dual outputs (Touch and Proximity outputs). Features Automatic Tuning Implementation (ATI) - Automatic adjustment for optimal performance. Internal Capacitor Implementation (ICI) reference capacitor on-chip Supply voltage: 2.95V to 5.5V RoHS2 Minimum external components Compliant Data streaming option Advanced on-chip digital signal processing User selectable (OTP): 4 Power Modes (15uA min) IO sink / source Time-out for stuck key Output mode (Direct / Latch / Toggle) Proximity and Touch Button sensitivity 6 pin TSOT23-6 Representations only, not actual markings 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 Applications LCD, Plasma & LED TVs Proximity detection enables backlighting activation GSM cellular telephones On ear detection / touch keys Wake-up from standby applications LED flashlights or headlamps Replacement for electromechanical switches White goods and appliances Find-In-The-Dark (FITD) applications Office equipment, toys, sanitary ware Automotive: Door pocket lighting, electric window control Flame proof, hazardous environment Human Interface Devices GUI trigger on Proximity detected Available options T TSOT23-6 A -40C to 85C IQS127D IQ Switch ProxSense Series Contents IQS127D DATASHEET .................................................................................................................................................. 1 1 OVERVIEW ......................................................................................................................................................... 3 2 ANALOGUE FUNCTIONALITY............................................................................................................................... 3 3 PACKAGING AND PIN-OUT ................................................................................................................................. 4 4 USER CONFIGURABLE OPTIONS .......................................................................................................................... 5 5 MEASURING CAPACITANCE USING THE CHARGE TRANSFER METHOD ................................................................ 7 6 DESCRIPTIONS OF USER OPTIONS ...................................................................................................................... 7 7 1-WIRE DATA STREAMING MODE......................................................................................................................11 8 ANTENNA TUNING IMPLEMENTATION (ATI)......................................................................................................13 9 ELECTRICAL SPECIFICATIONS .............................................................................................................................15 10 DATASHEET AND PART-NUMBER INFORMATION ..............................................................................................21 Copyright Azoteq (Pty) Ltd 2019 IQS127D Datasheet Page 2 of 24 All rights reserved Version 1.15 May 2019