IQS211-00000000-TSR Azoteq

ProxSense Series IQS211 Datasheet Single Channel Capacitive Proximity/Touch Controller with movement detection The IQS211 ProxSense IC is a self-capacitance controller designed for applications where an awake/activate on proximity/touch function is required. The IQS211 uses movement detection 2 for applications that require long term detection. The IQS211 operates standalone or I C and can be configured via OTP (One Time Programmable) bits. Features 6 pin TSOT23-6 RoHS2 Representations only, Pin compatible with IQS127/128/227/228 Compliant not actual markings Automatic Tuning Implementation (ATI) On-chip movement detection algorithm Forced activation when movement detected Special configurations: Minimal external components o Activation based on capacitive load at 25mm detection distance power-on Up to 60pF sensor load (with effective Separate MOVEMENT output selection: movement detection) Pulse Frequency Modulation (PFM, default), Multiple One-Time-Programmable (OTP) Pulse Width Modulation (PWM), Latched, or options PWM only active in activation Standalone direct outputs: Low power consumption: 80uA (50 Hz o Primary output (configurable) response), 20uA (20 Hz response) and 4uA Default: ACTIVATION (LP mode, zoom to scanning mode with o Secondary output (configurable) wake-up) Default: MOVEMENT Low power options: 2 Standard I C interface (polling) o Low power without activation 2 Alternate I C interfaces (Ready signal o Low power within activation 2 integrated onto I C clock line): o Low power standby modes with 2 proximity wake-up / reset wake-up o I C configuration at start-up with standalone runtime operation Internal Capacitor Implementation (ICI) 2 o I C with wake-up Supply voltage: 1.8V to 3.6V 1-Wire streaming interface: Low profile TSOT23-6 package o 1-Wire & event CLK signal Applications Wearable devices Human Interface Devices Movement detection devices (fitness, Proximity activated backlighting anti-theft) Applications with long-term activation White goods and appliances Available Packages T TSOT23-6 A -40C to 85C IQS211 Copyright Azoteq 2016 IQS211 Datasheet v1.4 Page 1 of 29 All Rights Reserved Check for latest datasheet October 2016 ProxSense Series 1 Packaging and Pin-Out The IQS211 is available in a TSOT23-6 package. IO1 / SCL / 1WIRE 1 6 Cx IQS VSS 2 5 VDDHI 211 IO2 / SDA 3 4 VREG Figure 1.1 IQS211 pin-out (TSOT23-6 package) Table 1.1 Pin-out description IQS211 in TSOT23-6 Pin Name Type Function 2 Multifunction IO1 / SCL (I C Clock signal) / 1 PRIMARY I/O Digital Input/Output 1WIRE (data streaming) 2 VSS Signal GND 2 3 SECONDARY I/O Digital Input/Output Multifunction IO2 / SDA (I C Data output) 4 VREG Regulator output Requires external capacitor 5 VDDHI Supply Input Supply:1.8V 3.6V Connect to conductive area intended for 6 Cx Sense electrode sensor VDDHI VDDHI R2 DS0 40R IO2/SDA/EVENT U1 R4 GREEN R1 5 6 VDDHI CX 470R 470R CX 1 IO1/SCL/DATA IO1/SCL/1WIRE IO2/SDA/EVENT C5 DS1 3 IO2/SDA/EVENT IO1/SCL/DATA 10pF R5 BLUE 2 4 VREG GND VREG 470R C3 C4 IQS211 1uF 100pF GND VDDHI VDDHI C1 C2 1uF 100pF R6 R7 4k7 4k7 GND GND GND GND IO1/SCL/DATA IO2/SDA/EVENT Figure 1.2 IQS211 reference schematic Figure 1.2 shows the following: Schematic for default power mode, see guide for capacitor selection in low power modes below: Sleep time 8ms (default) - 32ms 64ms 128ms 256ms C1 = 1F C1 = 1F C1 = 2.2F C1 = 4.7F Capacitor recommendation C3 = 1F C3 = 2.2F C3 = 4.7F C3 = 10F C5 = 10pF load. This can be changed for slight variations in sensitivity. The recommended value is 1pF to 60pF, depending on the capacitance of the rest of the layout. R1 = 470 0603 for added ESD protection Copyright Azoteq 2016 IQS211 Datasheet v1.4 Page 2 of 29 All Rights Reserved Check for latest datasheet October 2016