IQS133-00000-MSR

IQ Switch® ProxSense® Series IQS133 Datasheet IQ Switch® - ProxSense® Series Minimalist 3 Channel Capacitive Sensor with Compensation for Sensitivity Reducing Objects Unparalleled Features   Sub 4uA current consumption Automatic tuning for optimal operation in various environments & compensation against sensitivity reducing objects The IQS133 ProxSense® IC is a fully integrated three channel capacitive contact and proximity sensor with market leading sensitivity and automatic tuning of the sense electrodes. The IQS133 provides a minimalist implementation requiring as few as 2 external components. The device is ready for use in a large range of applications while programming options allow customisation in specialized applications. Main Features  3 Channel input device  Differentiated Touch & Proximity Output  ATI: Automatic tuning to optimum sensitivity  Supply Voltage 3V to 5V  Internal voltage regulator and reference capacitor  OTP options RoHS2 Compliant  Direct (logic level) and serial data output MSOP-10  Low Power Modes (sub 4µA min) Representations only, not actual markings  Proximity & Touch Thresholds  Automatic drift compensation  Development and Programming tools available (USBProg)  Small outline MSOP–10 Applications         White goods and appliances Remote Controls Office equipment, toys, sanitary ware Flame proof, hazardous environment Human Interface Devices Proximity detection that enables backlighting activation (Patented) Wake-up from standby applications Replacement for electromechanical switches GUI trigger on proximity detection. Available options TA MSOP-10 IQS133 -40°C to 85°C Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 1 of 25 September 2018 IQ Switch® ProxSense® Series Contents IQS133 DATASHEET .................................................................................................................................. 1 FUNCTIONAL OVERVIEW .......................................................................................................................... 3 1 INTRODUCTION ................................................................................................................................ 3 2 ANALOGUE FUNCTIONALITY............................................................................................................. 3 3 DIGITAL FUNCTIONALITY .................................................................................................................. 4 4 REFERENCE DESIGN .......................................................................................................................... 5 5 HIGH SENSITIVITY ............................................................................................................................. 6 6 USER CONFIGURABLE OPTIONS ........................................................................................................ 6 7 DESCRIPTION OF USER OPTIONS .................................................................................................... 10 8 CHARGE TRANSFERS ....................................................................................................................... 13 9 DATA STREAMING .......................................................................................................................... 14 10 AUTO TUNING IMPLEMENTATION (ATI) ......................................................................................... 15 11 SPECIFICATIONS ............................................................................................................................. 17 12 MECHANICAL DIMENSIONS ............................................................................................................ 20 13 DEVICE MARKING ........................................................................................................................... 22 14 ORDERING INFORMATION ............................................................................................................. 23 15 REVISION HISTORY ......................................................................................................................... 24 APPENDIX A. CONTACT INFORMATION ............................................................................................... 25 Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 2 of 25 September 2018 IQ Switch® ProxSense® Series Functional Overview Table 1.1 Pin Standalone Streaming Function 1 Introduction The IQS133 is a three channel capacitive proximity and touch sensor featuring internal voltage regular and reference capacitor (Cs). The device has three dedicated input pins for the connection of the sense electrodes (Cx). Three output pins for Touch (for each channel) detection and one output (POUT) for proximity detection. The output pins can be configured as Logic outputs or in a serial data streaming option on TO0. The device automatically tracks slow varying environmental changes via various filters, detect noise and has an Automatic Tuning Implementation (ATI) to tune the device for optimal sensitivity. 1.1 Pin-outs 1. GND 10. TO2 2. CX0 9. CX2 3. CX1 8. TO1 4. VDDHI 7. TO0/DATA 5. VREG 6. PO/RFIN Figure 1.1 IQS133 Pin-outs. IQS133 Pin-outs 1 GND GND Ground 2 CX0 CX0 Sense Electrode 3 CX1 CX1 Sense Electrode 4 VDDHI VDDHI Power Input 5 VREG VREG Regulator Pin 6 PO 7 TO0 8 TO1 9 CX2 10 TO2 Proximity Output DATA Touch Output Touch Output CX2 Sense Electrode Touch Output 1.2 Applicability All specifications, except where specifically mentioned otherwise, provided by this datasheet are applicable to the following ranges:   Temperature -40C to +85C Supply voltage (VDDHI) 3V to 5.5V 2 Analogue Functionality The analogue circuitry measures the capacitance of the sense electrodes attached to the Cx pins through a charge transfer process that is periodically initiated by the digital circuitry. The measuring process is referred to as a conversion and consists of the discharging of Cs and Cx, the charging of Cx Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 3 of 25 September 2018 IQ Switch® ProxSense® Series and then a series of charge to Cs until a trip voltage number of charge transfers the trip voltage is referred Values (CS). transfers from Cx is reached. The required to reach to as the Count The capacitance measurement circuitry makes use of an internal Cs and voltage reference (VREG). The analogue functionality for:   circuitry further provides Power on reset (POR) detection. Brown out detection (BOD). 3 Digital Functionality The digital processing responsible for:           functionality is Device configuration from OTP settings after POR. Management of BOD and WDT events. Initiation of conversions at the selected rate. Processing of CS and execution of algorithms. Monitoring and automatic execution of the ATI algorithm. Signal processing and digital filtering. Detection of PROX and TOUCH events. Managing outputs of the device. Managing serial communications. Manage programming of OTP options. Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 4 of 25 September 2018 IQ Switch® ProxSense® Series 4 Reference Design  LEDs used in active low mode  Use R4-R7 for current limiting on I/Os Figure 4.1    Reference Design for IQS133. Output in active Low. Use C3 and C4 for added RF immunity. External pull-up (10k) on TOUT0/DATA required when used in Data streaming mode. Place C1-C4 as close as possible to IC, connected to good GND. Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 5 of 25 September 2018 IQ Switch® ProxSense® Series The configuration of the device can be done on packaged devices or in-circuit. In-circuit Through patented design and advanced signal configuration may be limited by values of processing, the device is able to provide external components chosen. extremely high sensitivity to detect Proximity. 6.1 Configuring of Devices This enables designs to detect proximities at distances that cannot be equalled by most Azoteq offers a Configuration Tool (CTxxx) other products. When the device is used in and accompanying software (USBProg.exe) environments where noise or ground effects that can be used to program the OTP user exist that lower the sensitivity, a reduced options for prototyping purposes. More details proximity threshold is proposed to ensure regarding the configuration of the device with reliable functioning of the sensor. the USBProg program is explained by application note: “AZD007 – USBProg 6 User Configurable Options Overview” which can be found on the Azoteq website. The IQS133 provides One Time Programmable (OTP) user options (each Alternate programming solutions of the option can be modified only once). The device IQS133 also exist. For further enquiries is fully functional in the default (unconfigured) regarding this matter please contact Azoteq at state. OTP options are intended for specific ProxSenseSupport@azoteq.com or the local distributor.Table 6-6.1: User Selectable applications. Configuration Options: Bank 0 5 High Sensitivity Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 6 of 25 September 2018 IQ Switch® ProxSense® Series PMODE2 PMODE1 PMODE0 TTHR2 TTHR1 bit 7 Bank 0: bit 7-5 TTHR0 PTHR1 PTHR0 bit 0 PMODE2: PMODE0:Power Modes Section 7.4 000 = Boost Power Mode 001 = Normal Power Mode 010 = Low Power Mode 1 011 = Low Power Mode 2 100 = Low Power Mode 3 101 = Low Power Mode 4 110 = Low Power Mode 5 111 = Low Power Mode 6 Bank 0: bit 4-2 TTHR2:TTHR0: Touch Thresholds on CH0 & CH2 Section 7.2 000 = 4/64 001 = 1/64 (Most Sensitive) 010 = 2/64 011 = 8/64 100 = 12/64 101 = 16/64 110 = 24/64 111 = 32/64 (Least Sensitive) Bank 0: bit 1-0 PTHR1: PTHR0:Proximity Thresholds Section 7.1 00 = 2 (Most Sensitive, 4 for IQS133Z) 01 = 4 (2 for IQS133Z) 10 = 8 11 = 16 (Least Sensitive) Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 7 of 25 September 2018 IQ Switch® ProxSense® Series Table 6-6.2: User Selectable Configuration Options: Bank 1 tHALT1 tHALT0 ATI CH1 TTH2 CH1 TTH1 CH1 TTH0 bit 7 Bank 1: bit 7-6 BASE1 BASE0 bit 0 tHALT1:tHATL0: Halt time of Long Term Average Section 7.67.5 00 = 20 seconds 01 = 40 seconds 10 = Always 11 = Always (Prox on 40) Bank 1: bit 5 ATI: ATI Select Section 10.2 0 = Full 1 = Partial Bank 1: bit 4-2 CH1 TTH2:CH1 TTH0: Touch Thresholds on CH1 Section 7.2 & Section 10.2 000 = 4/64 001 = 1/64 (Most Sensitive) 010 = 2/64 011 = 8/64 100 = 12/64 101 = 16/64 110 = 24/64 111 = 32/64 (Least Sensitive) Bank 1: bit 1-0 BASE1:BASE0: Proximity CH Base Value Section 7.5 00 = 200 01 = 50 10 = 100 11 = 250 Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 8 of 25 September 2018 IQ Switch® ProxSense® Series Table 6-6.3: User Selectable Configuration Options: Bank 2 STREAMING ND LEVEL bit 7 Bank 2: bit 5 STREAMING: 1-wire streaming mode ND CX1 Block LOGIC bit 0 Section 9.1 0 = Disabled 1 = Enabled Bank 2: bit 4 ND LEVEL: Sets ND level 0 = 50mV 1 = 25mV Bank 2: bit 3 ND: Noise Detect Section 7.7 0 = Disabled 1 = Enabled Bank 2: bit1 CX1 Block: Guard channel enable Section 0 0 = Disabled 1 = Enabled Bank 2: bit0 LOGIC: Output logic select Section 7.3 0 = Active Low (Software open drain) 1 = Active High Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 9 of 25 September 2018 IQ Switch® ProxSense® Series 7 Description of User Options This section describes the individual user programmable options of the IQS133 in more detail. A number of standard device configurations are available (refer to Chapter 6). Azoteq can supply pre-configured devices for large quantities. The touch event is triggered based on TTH, CS and LTA. A touch event is identified when for at least 4 consecutive samples of the following equation holds: TTH =< LTA-CS With lower average CS (therefore lower LTA) values the touch threshold will be lower and vice versa. The Touch Threshold for CH0 & CH2 are set as follow: Configuration: Bank0 bit 4-2 7.1 Adjustable Proximity Threshold TTHR0:TTHR2: Touch Thresholds The IQS133 has 4 proximity threshold settings. The proximity threshold is selected by the designer to obtain the desired sensitivity and noise immunity. The proximity event is triggered based on the selected proximity threshold; the CS and LTA (Long Term Average) The threshold is expressed in terms of counts; the same as CS. Bit Selection 000 4/64 001 1/64 (Most sensitive) 010 2/64 011 8/64 100 12/64 101 16/64 110 24/64 111 32/64 (Least sensitive) The IQS133Z start with a proximity threshold of the PTH +4 for 15 seconds (as well as PTH + 4 when in zoom mode if one of the LP selections are used) from a cold start. After 15 seconds, the proximity threshold will adjust to the value selected by the OTP option. Configuration: Bank0 bit1-0 PTHR1:PTHR0: Proximity Thresholds The Touch Threshold for CH1 is set as follow: Configuration: Bank1 bit 4-2 TTHR0:TTHR2: Touch Thresholds Bit Selection 000 4/64 Bit Selection 00 2 (Most sensitive), (4 for IQS133Z) 001 1/64 (Most sensitive) 01 4 (2 for IQS133Z) 010 2/64 10 8 011 8/64 11 16 (Least sensitive) 100 12/64 101 16/64 110 24/64 111 32/64 (Least sensitive) 7.3 Logic Output 7.2 Adjustable Touch Thresholds The IQS133 has 8 touch threshold settings. The touch threshold is selected by the designer to obtain the desired touch sensitivity. The touch threshold is expressed as a fraction of the LTA as follows: TTH = Selected Touch Threshold x LTA Where LTA is the Long Term Average Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. The IQS133 can be set to sink or source current in stand-alone mode, by setting the logic output active high or active low. IQS133 Datasheet Revision 1.92 Page 10 of 25 September 2018 IQ Switch® ProxSense® Series Configuration: Bank2 bit0 Logic: Output Logic Select Bit Selection 0 Active Low (Software open drain) 1 Active High 7.4 Power Modes The IQS133 IC has eight power modes specifically designed to reduce current consumption for battery applications. The power modes are implemented around the occurrence of charge cycle every tSAMPLE seconds (refer to Table 7.1). Lower sampling frequencies yield lower power consumption (but decreased response time). During normal operation charge cycles are initiated approximately every 50ms. This is referred to as Normal Power Mode (NP). The IQS133 by default charges in Boost Power Mode. The timings for all the Power Modes are provided in the table below. While in any power mode the device will zoom to BP whenever the counts (CS) indicate a possible proximity or touch event. This improves the response time. The device will remain in BP for tZOOM seconds and then return to the selected power mode. The Zoom function allows reliable detection of events with counts being produced at the BP rate. Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. Table 7.1 Power Mode timings Power Mode timing tSAMPLE (ms) tBP (default) 5 tNP 50 tLP1 256 tLP2 512 tLP3 768 tLP4 1000 tLP5 1500 tLP6 2000 Configuration: Bank0 bit7-5 PMODE0:PMODE1: Power Modes Bit Selection 000 Boost Power Mode (BP) 001 Normal Power Mode (NP) 010 Low Power Mode 1 (LP1) 011 Low Power Mode 2 (LP2) 100 Low Power Mode 3 (LP3) 101 Low Power Mode 4 (LP4) 110 Low Power Mode 5 (LP5) 111 Low Power Mode 6 (LP6) IQS133 Datasheet Revision 1.92 Page 11 of 25 September 2018 IQ Switch® ProxSense® Series Charge Cycle Duration = tCHARGE CX Zoom to Boost Mode after proximity detected tSAMPLE tSAMPLE Figure 7.1 LP Modes: Charge cycles 7.5 ATI Base Value The sensitivity gain of the Proximity channel can be set by adjusting the Base Value of the ATI algorithm. Decreasing the base from 200 to 150 or even 50 will increase the sensitivity and vice versa. By decreasing the base value, the analog gain from the sensor is increased. Configuration: Bank1 bit1-0 BASE1:BASE0: Proximity Base Value Bit Selection 00 200 01 50 10 100 11 250 7.6 Filters used by the IQS133 The IQS133 devices employ various signal processing functions that includes the execution of various filters as described below. functions such as identification of proximity and touch events. The LTA is calculated from the counts (CS). The filter only executes while no proximity or touch event is detected to ensure compensation only for environmental changes. However there may be instances where sudden changes in the environment or changes in the environment while a proximity or touch event has been detected cause the CS to drift away from the LTA. To compensate for these situations a Halt Timer (tHALT) has been defined. The Halt Timer is started when a proximity or touch event occurs (for the 133Z, all the channels’ filters halt on a proximity event) and when it expires the LTA filter is recalibrated. Recalibration causes LTA < CS, thus the disappearance of proximity or touch events. The designer needs to select a Halt Timer value to best accommodate the required application. 7.6.1 Long Term Average (LTA) Capacitive touch devices detect changes in capacitance that are not always related to the intended proximity or touch of a human. This is a result of changes in the environment of the sense plate and other factors. These changes need to be compensated for in various manners in order to reliably detect touch events and especially to detect proximity events. One mechanism the IQS133 employs is the use of a Long Term Averaging filter (IIR type filter) which tracks slow changes in the environment (expressed as changes in the counts). The result of this filter is a Long Term Average (LTA) value that forms a dynamic reference used for various Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. Configuration: Bank1 bit7-6 tHALT1:tHATL0: Halt time of Long Term Average Bit Selection 00 20 seconds 01 40 seconds 10 Never 11 ALWAYS (Prox on 40 seconds) Notes:   With the Never (bit selection “10”) option, the filter will not halt when any proximity or touch condition occurs. With the ‘ALWAYS’ (bit selection “11”) option and the detection of a proximity event the execution of the filter will be halted for only 40 seconds and with the detection of a touch event the execution IQS133 Datasheet Revision 1.92 Page 12 of 25 September 2018 IQ Switch® ProxSense® Series of the filter will be halted as long as the touch condition applies. The IQS133 has advanced immunity to RF noise sources such as GSM cellular telephones, DECT, Bluetooth and WIFI devices. Design guidelines should however be followed to ensure the best noise immunity. Refer to Application note “AZD024 - Graphical Representation of the IIR Filter” for detail regarding the execution of the LTA filter. 7.7 Noise Detection  Configuration: Bank2 bit3 ND: Noise Detect Bit Selection 0 Disabled 1 Enabled   Notes for layout:      A ground plane should be placed under the IC, except under the Cx lines Place the sensor IC as close as possible to the sense electrodes. All the tracks on the PCB must be kept as short as possible. The capacitor between VDDHI and GND as well as between VREG and GND, must be placed as close as possible to the IC. A 100 pF capacitor can be placed in parallel with the 1uF capacitor between 7.8 Guard Channel  VDDHI and GND. Another 100 pF capacitor can be placed in parallel with the 1uF capacitor between VREG and GND. When the device is too sensitive for a specific application a parasitic capacitor (max 5pF) can be added between the Cx line and ground. Proper sense electrode and button design principles must be followed. Unintentional coupling of sense electrode to ground and other circuitry must be limited by increasing the distance to these sources. In some instances a ground plane some distance from the device and sense electrode may provide significant shielding from undesired interference. When the capacitance between the sense electrode and ground becomes too large the sensitivity of the device may be influenced. For more guidelines on proper layout, please see the application note: “AZD008 - Design Guidelines for Touch Pads” on the Azoteq webpage www.azoteq.com. 8 Charge Transfers The IQS133 samples in 4 timeslots, with one internal Cs capacitor. The charge sequence is shown in Figure 8.1, where CH0 is the Prox CX1 Block: Guard channel enable channel, and charges before each of the 3 Bit Selection input channels. CH0 is realised by connecting 0 Disabled all three touch electrodes with internal 1 Enabled switches. Therefore: CH0 is a distributed When the Guard channel is enabled, the other electrode formed by the 3 touch electrodes. touch outputs from the device are blocked when a touch condition is detected on CH1 CH0 P CH1 P CH2 CHP (CH1’s touch output is still active). This can PROX prevent accidental activation when picking up a product, or give a blocking function against CH0 + water or other environmental factors. CX0 CX1 CX2 CH1 + CH2 Configuration: Bank2 bit1 Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. Figure 8.1 Charge Transfer for IQS133. IQS133 Datasheet Revision 1.92 Page 13 of 25 September 2018 IQ Switch® ProxSense® Series 9.2 Data Streaming Protocol 9 Data Streaming The IQS133 has the capability to stream data to a MCU. This provides the designer with the capability to obtain the parameters within the device in order to aid design into applications, and debugging systems. Data streaming may further be used by an MCU to control events or further process results obtained from the IQS133. Data streaming is performed as a 1wire data protocol on one of the output pins (TO0). The functions of all the other output pins are therefore lost when the device is put in streaming mode. Data Streaming can be enabled as indicated below: When data streaming is enabled data is sent following each charge cycle. Figure 9.1 illustrates the communication protocol for initialising and sending data with the 1 wire communication protocol. 1. Communications is initiated by a START bit. This bit is defined as a low condition for tSTART. 2. Following the START bit a synchronisation byte (tINIT = 0xAA) is sent. This byte is used by the MCU for clock synchronisation. 3. Following tINIT the data bytes will be sent. 8 Bytes will be sent after each charge cycle. 4. Each byte sent will be preceded by a START bit and a STOP bit will follow every byte. 5. A STOP bit is indicated by taking pin 7 high. The STOP bit does not have a defined period. 9.1 Entering Data Streaming Mode Configuration: Bank2 bit5 STREAMING: 1-wire data streaming mode Bit Selection 0 Disabled 1 Enabled TO0 D7 tINIT tDATA D6 D5 D4 D3 D2 D1 D0 tSTOP Stop – Start Start Stop – Start Figure 9.1 Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. 1-wire streaming mode IQS133 Datasheet Revision 1.92 Page 14 of 25 September 2018 IQ Switch® ProxSense® Series Table 9.1 Byte Definitions for Normal Data Streaming Mode 6 40 Compensation (0) 55 Not Used 54 Not Used 53 Not Used 52 Multiplier (4) 51 Multiplier (3) Byte Bit Value 0 7:0 CS High byte 1 15:8 CS Low byte 2 23:16 LTA High byte 50 Multiplier (2) 3 31:24 LTA Low byte 49 Multiplier (1) 4 39 ATI busy 48 Multiplier (0) 38 RF Noise Detect 63 Not Used 37 Zoom active 62 Not Used 36 LP active 61 Not Used 35 Not used (always 0) 60 Not Used 34 Proximity event CH0 59 Touch CH 3 33 CH Indication(1) 58 Touch CH 2 32 CH Indication(0) 57 Touch CH 1 47 Not Used 56 Not Used 46 Not Used 45 Compensation (5) 44 Compensation (4) 43 Compensation (3) 42 Compensation (2) 41 Compensation (1) 5 7 In the 4th byte, the channel indication is represented as: tHALT1:tHATL0: Halt time of Long Term Average 00 CH P (Distributed Proximity Channel) 01 CH 0 (First Touch Channel) 10 CH 1 (Second Touch Channel) 11 CH 2 (Third Touch Channel) 10 Auto Tuning Implementation (ATI) ATI is a sophisticated technology implemented in the latest generation ProxSense® devices that optimises the performance of the sensor in a wide range of applications and environmental conditions (refer to application note AZD0027 - Auto Tuning Implementation). ATI makes adjustments through internal reference capacitors to obtain optimum performance. ATI adjusts internal circuitry according to two parameters, the ATI multiplier and the ATI Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. compensation. The ATI multiplier can be viewed as a course adjustment and the ATI compensation as a fine adjustment. The adjustment of the ATI parameters will result in variations in the counts and sensitivity. Sensitivity can be observed as the change in counts as the result of a fixed change in sensed capacitance. The ATI parameters have been chosen to provide significant overlap. It may therefore be possible to select various combinations of ATI multiplier and ATI compensation settings IQS133 Datasheet Revision 1.92 Page 15 of 25 September 2018 IQ Switch® ProxSense® Series to obtain the same count values. The sensitivity of the various options may however be different for the same counts. in most instances the effect will be hardly noticeable. Shortly after the completion of the retuning process the sensitivity of Proximity detection may be reduced slightly for a few seconds as internal filters stabilises.  10.1 Automatic ATI The IQS133 implements an automatic ATI algorithm. This algorithm automatically adjusts the ATI parameters to optimise the sense electrodes connection to the device. The device will execute the ATI algorithm whenever the device starts-up and when the counts are not within a predetermined range. While the Automatic ATI algorithm is in progress this condition will be indicated in the streaming data and proximity and touch events cannot be detected. The device will only briefly remain in this condition and it will be entered only when relatively large shifts in the counts has been detected. The automatic ATI function aims to maintain a constant count value, regardless of the capacitance of the sense electrode (within the maximum range of the device). The effects of auto-ATI on the application are the following:      Automatic adjustment of the device configuration and processing parameters for a wide range of PCB and application designs to maintain an optimal configuration for proximity and touch detection. Automatic tuning of the sense electrodes at start-up to optimise the sensitivity of the application. Automatic re-tuning when the device detects changes in the sense electrodes capacitance to accommodate a large range of changes in the environment of the application that influences the sensing electrodes. Re-tuning only occurs during device operation when a relatively large sensitivity reduction is detected. This is to ensure smooth operation of the device during operation. Re-tuning may temporarily influences the normal functioning of the device, but Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. Automatic ATI can be implemented so effectively due to:     Excellent system signal to noise ratio (SNR). Effective digital signal processing to remove AC and other noise. The very stable core of the devices. The built in capability to accommodate a large range of sensing electrode capacitances. 10.2 Partial ATI If the ATI Select bit is set (to Partial), the touch threshold for CH1 is the same as for CH0 &CH2 (see Section 7.2, CH1 touch threshold is now also set in Bank 0). If the ATI bit is not set (default), CH1 has its own touch threshold. The same applies to the Proximity channel’s base value, which is not set in the first two bits of Bank 0 anymore. Instead, the first 5 bits of Bank 0, changes to Multiplier bits (both Sensitivity and Compensation) as follow: Configuration: Bank1 bit 2-0 Comp2:Comp0: Compensation Multiplier Bit Selection 000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7 IQS133 Datasheet Revision 1.92 Page 16 of 25 September 2018 IQ Switch® ProxSense® Series Configuration: Bank0 bit1-0 Base1:Base0: Sensitivity Multiplier Bit Selection 00 0 01 1 10 2 11 3 11 Specifications 11.1 Absolute Maximum Specifications The following absolute maximum parameters are specified for the device: Exceeding these maximum specifications may cause damage to the device.        Operating temperature Supply Voltage (VDDHI – GND) Maximum pin voltage Maximum continuous current (for specific Pins) Minimum pin voltage Minimum power-on slope ESD protection Table 11.1 -40°C to 85°C 5.5V VDDHI + 0.5V GND - 0.5V 100V/s ±3kV IQS133 General Operating Conditions DESCRIPTION Conditions Supply voltage PARAMETER MIN TYP MAX UNIT VDDHI 2.95 3.3 5.50 V 2.35 2.50 2.65 V Internal regulator output 2.95 ≤ VDDHI ≤ 5.0 VREG Boost operating current 2.95 ≤ VDDHI ≤ 5.0 IIQS133 BP 220 μA Normal operating current 3.3V IIQS133 NP 17.5 μA Low power operating current 3.3V IIQS133 LP1 6.3 μA Low power operating current 3.3V IIQS133 LP2 4.8 μA Low power operating current 3.3V IIQS133 LP3 4.3 μA Low power operating current 3.3V IIQS133 LP4 4 μA Low power operating current 3.3V IIQS133 LP5 3.8 μA Low power operating current 3.3V IIQS133 LP6 6.5 Touches/second 1 Communication and charge frequency to comply with sample rate as reported earlier in this datasheet. 2 Debounce of 2 (up and down) Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 19 of 25 September 2018 IQ Switch® ProxSense® Series 12 Mechanical Dimensions Figure 12.1 MSOP-10 Package Dimensions. Figure 12.2 MSOP-10 Footprint. Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 20 of 25 September 2018 IQ Switch® ProxSense® Series Table 12.1 Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. MSOP-10 Footprint Dimensions from Figure 12.2. Dimension [mm] Pitch 0.50 C 4.40 Y 1.45 X 0.30 IQS133 Datasheet Revision 1.92 Page 21 of 25 September 2018 IQ Switch® ProxSense® Series 12.2 Package MSL Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions for some semiconductors. The MSL is an electronic standard for the time period in which a moisture sensitive device can be exposed to ambient room conditions (approximately 30°C/85%RH see J-STD033C for more info) before reflow occur. Table 12.2 MSL Package Level (duration) MSL 1 (Unlimited at ≤30 °C/85% RH) MSOP-10 Reflow profile peak temperature < 260 °C for < 25 seconds Number of Reflow ≤ 3 13 Device Marking IQS133 x t zzzzzz PWWYY REVISION DATE CODE TEMPERATURE CONFIGURATION MODE REVISION x = IC Revision Number TEMPERATURE RANGE t = = I C IC CONFIGURATION1 zzzzzz = Configuration (Hexadecimal) DATE CODE P = Package House WW = Week YY = Year 1 -40°C to 85°C (Industrial) 0°C to 70°C (Commercial) Configuration marking on the bottom of the IC Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 22 of 25 September 2018 IQ Switch® ProxSense® Series 14 Ordering Information Orders will be subject to a MOQ (Minimum Order Quantity) of a full reel. Contact the official distributor for sample quantities. A list of the distributors can be found under the “Distributors” section of www.azoteq.com. For large orders, Azoteq can provide pre-configured devices. The Part-number can be generated by using USBProg.exe or the Interactive Part Number generator on the website. IQS133 zzzzzz pp b BULK PACKAGING IC NAME CONFIGURATION MODE PACKAGE TYPE IC NAME IQS133 = IQS133 CONFIGURATION zzzzzz = IC Configuration (hexadecimal) PACKAGE TYPE MS = MSOP-10 BULK PACKAGING R = Reel (4000pcs/reel) – MOQ = 4000pcs T = Tube (96pcs/tube, Special Order) Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 23 of 25 September 2018 IQ Switch® ProxSense® Series 15 Revision History The limitations for specific revision numbers are described below: Revision Device Package Markings ID 0 1901 IQS133 ENG Limitations  CX floating between conversions  High sensitivity at start up. Suggested PTH = 8 (default = 2 may trigger PO on start-up or LP exit in selected applications)  Low power limitation, down to sub 8uA only. 23010 1 1902 IQS133 110D 25110 21211 2 1903 IQS 133Z 23311 Copyright © Azoteq (Pty) Ltd 2018 All rights reserved. IQS133 Datasheet Revision 1.92 Page 24 of 25 September 2018 IQ Switch® ProxSense® Series Azoteq USA Asia South Africa Physical Address 11940 Jollyville Suite 120-S Austin TX 78750 USA Room 501A, Block A, T-Share International Centre, Taoyuan Road, Nanshan District, Shenzhen, Guangdong, PRC 1 Bergsig Avenue Paarl 7646 South Africa Postal Address 11940 Jollyville Suite 120-S Austin TX 78750 USA Room 501A, Block A, T-Share International Centre, Taoyuan Road, Nanshan District, Shenzhen, Guangdong, PRC PO Box 3534 Paarl 7620 South Africa Tel +1 512 538 1995 +86 755 8303 5294 ext 808 +27 21 863 0033 Email info@azoteq.com info@azoteq.com info@azoteq.com Visit www.azoteq.com for a list of distributors and worldwide representation. Patents as listed on www.azoteq.com/patents-trademarks/ may relate to the device or usage of the device. Azoteq®, Crystal Driver , IQ Switch®, ProxSense®, ProxFusion®, LightSense™, SwipeSwitch™, and the logo are trademarks of Azoteq. The information in this Datasheet is believed to be accurate at the time of publication. Azoteq uses reasonable effort to maintain the information up-to-date and accurate, but does not warrant the accuracy, completeness or reliability of the information contained herein. All content and information are provided on an “as is” basis only, without any representations or warranties, express or implied, of any kind, including representations about the suitability of these products or informat ion for any purpose. Azoteq disclaims all warranties and conditions with regard to these products and information, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property rights. Azoteq assumes no liability for any damages or injury arising from any use of the information or the product o r caused by, without limitation, failure of performance, error, omission, interruption, defect, delay in operation or transmiss ion, even if Azoteq has been advised of the possibility of such damages. The applications mentioned herein are used solely for the purpose of illustration and Azoteq makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction o r otherwise. Azoteq products are not authorized for use as critical components in life support devices or systems. No licenses to patents are granted, implicitly, express or implied, by estoppel or otherwise, under any intellectual property rights. In the event that any of the abovementioned limitations or exclusions does not apply , it is agreed that Azoteq’s total liability for all losses, damages and causes of action (in contract, tort (including without limitation, negligence) or otherwise) will not exceed the amount already paid by the customer for the products. Azoteq reserves the right to alter its products, to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and information, its products, programs and services at any time or to move or discontinue any contents, products, programs or services without pr ior notification. For the most up-to-date information and binding Terms and Conditions please refer to www.azoteq.com. Copyright © Azoteq (Pty) Ltd 2019. All Rights Reserved. info@azoteq.com IQS5xx-B000 Datasheet Revision 2.1 Page 1 of 1 March 2021