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i q switch ? proxsense ? series iqs1 33 datasheet iq switch ? - proxsense ? series minimalist 3 channel capacitive sensor with compensation for sensitivity reducing objects unparalleled features sub 4 ua current consumption automatic tuning for optimal operation in various environments & compensation against sensitivity reducing objects the iqs1 33 proxsense ? ic is a fully integrated three channel capacitive contact a nd proximity sensor with market leading sensitivity and a utomatic t uning o f the sens e electrodes . the iqs1 33 provides a minimalist implementation requiring as few as 2 external components . the device is ready for use in a large range of applications while p rogramming options allow customisation in specialized application s. main features 3 channel input device differentiated touch & proximity output ati: automatic t uning to optimum sensitivity supply v oltage 3 v to 5 v internal voltage regulator and reference capacitor otp options ? direct (logic level) and serial data output ? low power modes ( sub 4 a min) ? proximity & touch thresholds automatic drift compensation development and programming tools available (visualproxsense and usbp r og) small outline msop C 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 (patent ed ) wake - up from standby applications replacement for electromechanical switches gui trigger on p rox imity detection . available options t a msop - 10 - 40 c to 85 c iq s 1 33 msop - 10 representations only, not actual markings
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 2 of 23 all rights reserved. revision 1.6 october 2012 functional overview 1 introduction the iqs1 33 is a three channel capacitive proximity and touch sensor featuring internal voltage regular and reference capacitor (c s ). the device has three dedicated input p in s for the connection of the sense electrode s (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 to 0 . th e device automatically track s slow varying environmental changes via various filters, detect noise and has an a utomatic tuning implementation (ati) to tune the device for optimal sensitivity . 1.1 pin - outs figure 1.1 IQS133 pin - outs table 1.1 IQS133 pin - outs. pin standalone streaming function 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 proximity output 7 to0 data touch output 8 to1 touch output 9 cx2 cx2 sense electrode 10 to 2 touch output 1.2 applicability all specifica tions , except where specifically mentioned otherwise, provided by this datasheet are applicable to the following ranges : temperature - 40c to +85c supply voltage (v ddhi ) 3 v to 5 .5 v 2 analogue functionality the analogue circuitry measures the capacitance of the sense electrode s attached to the cx pin s through a charge transfer process that is periodically initiated by the digital c ircuitry. the measuring process is referred to as a conversion and consists of the discharging of c s and cx, the charging of cx and then a series of charge transfers from cx 1 . g n d 2 . c x 0 3 . c x 1 4 . v d d h i 5 . v r e g 1 0 . t o 2 9 . c x 2 8 . t o 1 7 . t o 0 / d a t a 6 . p o / r f i n
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 3 of 23 all rights reserved. revision 1.6 october 2012 to c s un til a trip voltage is reached. the number of charge transfers required to reach the trip voltage is referred to as the count values (cs). the capacitance measurement circuitry makes use of an internal c s and voltage reference (v reg ). the analogue circuitry further provides functionality for: p ower on reset (por) detection. brown out detection (bod). 3 digital functionality the digital processing functionality is responsible for: d evice configuration f r om otp settings after por . management of bod and wdt events. initiation of conversions at the selected rate. p rocessing of cs and e xecution of algorithms . monitoring and automatic execution of the ati algorithm. signal processing and digital filtering. detecti on of prox and touch events. manag ing outputs of the device. manag ing serial communications. manage progra mming of otp options.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 4 of 23 all rights reserved. revision 1.6 october 2012 detailed description 4 reference design figure 4.1 reference design for IQS133. figure 4.2 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. l ed s used in active low mode use r4 - r7 for current limiting on i/os
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 5 of 23 all rights reserved. revision 1.6 october 2012 5 high sensitivity through patented design and advanced signal processing , the device is able to provide extremely high sensitivit y to dete ct proximity. this enables designs to detect proximities at di stances that cannot be equalled by most other products. when the device is used in environments where noise or ground effects exist that lower the sensitivity , a reduced proximity threshold is proposed to ensure reliable functioning of the s ensor . 6 user configurable options the IQS133 provides one time programmable (otp) user options (each option can be modified only once). the device is fully functional in the default (unconfigured) state. otp options are intended for specific applications. the configuration of the device c an be done on packaged devices or in - circuit. in - circuit configuration may be limited by values of external components chosen. 6.1 configuring of d evice s azoteq offers a configuration tool (ctxxx) and accompanying software (usbprog.exe) that can be used to pr ogram the otp user options for prototyping purposes. more details regarding the configuration of the device with the usbprog program is explained by application note: azd007 C usbprog overview which can be found on the azoteq website. alternate program ming solutions of the IQS133 also exist. for further enquiries regarding this matter please contact azoteq at proxsensesupport@azoteq.com or the local distributor . table 6 - 1 : user selectable configuration options : bank 0
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 6 of 23 all rights reserved. revision 1.6 october 2012 p mode 2 p mode1 p mode0 t thr 2 t thr 1 t thr0 p thr 1 p thr0 bit 7 bit 0 bank 0: bit 7 - 5 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 t thr 2 : t thr0 : 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: b it 1 - 0 p thr 1 : p thr0 : proximity thresholds section 7.1 00 = 2 (most sensitive , 4 for IQS133z ) 01 = 4 (2 for IQS133z) 10 = 8 11 = 16 (least sensitive)
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 7 of 23 all rights reserved. revision 1.6 october 2012 table 6 - 2 : user selectable configuration options : bank 1 t halt 1 t halt 0 a ti ch1 t th 2 ch1 t th 1 ch1 t th 0 base1 base0 bit 7 bit 0 bank 1: b it 7 - 6 t halt 1 :t hatl 0 : halt time of long term average section 7.6 7.5 00 = 20 seconds 01 = 40 seconds 10 = always 11 = always (prox on 40) bank 1: b it 5 a ti : ati select section 10.2 0 = full 1 = partial bank 1: bit 4 - 2 ch1 t th 2:ch1 t th 0: 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: b it 1 - 0 base1:base0: proximity ch base value section 7.5 00 = 200 01 = 50 10 = 100 11 = 250
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 8 of 23 all rights reserved. revision 1.6 october 2012 table 6 - 3 : user selectable configuration options : bank 2 streaming nd level nd cx1 block logic bit 7 bit 0 bank 2: b it 5 streaming : 1 - wire streaming mode section 9.1 0 = d isabled 1 = e nabled bank 2: bit 4 nd level: sets nd level 0 = 50mv 1 = 25mv bank 2: b it 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: b it 0 logic: output logic select section 7.3 0 = active low (software open drain) 1 = active high
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 9 of 23 all rights reserved. revision 1.6 october 2012 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. 7.1 adjustable pro ximity threshold 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 . the IQS133z start with a proximity threshold of the p th +4 for 15 seconds (as well as p th + 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 pthr 1 :pthr 0 : proximity thresholds bit selection 00 2 (most sensitive) , (4 for IQS133z) 01 4 (2 for IQS133z) 10 8 11 16 (least sensitive) 7.2 adjustable touch thresholds the iqs1 33 has 8 touch threshold settings. the touch threshold is selected by the designer to obtain the desired touc h sensitivity. the touch threshold is expressed as a fraction of the lta as follows: t th = selected touch threshold x lta where lt a is the long term average the touch event is triggered based on t th , cs and lta. a touch event is identified when for at least 4 consecutive samples of the following equation holds: t th =< 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: bank 0 bit 4 - 2 tthr0:tthr2: touch thresholds 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 tou ch threshold for ch1 is set as follow: configuration: bank1 bit 4 - 2 tthr0:tthr2: touch thresholds 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) 7.3 logic output the IQS133 can be set to sink or source current in stand - alone mode, by setting the logic output active high or active low.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 10 of 23 all rights reserved. revision 1.6 october 2012 configuration: bank2 bit0 logic: output logic select bit selection 0 active low (software open drain) 1 active high 7.4 power modes the iq s133 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 t sample seconds (refer to table 7.1 ). lower sam pling frequencies yield lower power consumption (but decreased response time) . during normal operation charge cycles are initiated approximately every 50 ms . this is referred to as normal power mode (np). the IQS133 by default charges in boost power mode. the timings for all the po wer modes are provided in the table below . while in any power mode the device will zoom to b p whenever the counts (cs) indicate a possible proximity or touch event. this improves the response time. the device will remain in b p for t zoom seconds and then return to the selected power mode. the zoom function allows reliable detection of events with count s being produced at the b p rate. table 7.1 power mode timings power mode timing t sample (ms) t b p (default) 5 t np 50 t lp1 256 t lp2 512 t lp3 768 t lp4 1000 t lp5 1500 t lp6 2000 configuration: bank0 bit7 - 5 pmode0:pmode1 : power modes bit selection 000 boost power mode (bp ) 0 0 1 normal power mode (np) 0 10 low power mode 1 (lp1) 0 11 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 )
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 11 of 23 all rights reserved. revision 1.6 october 2012 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. c onfiguration: bank1 bit1 - 0 base1 : base0: proximity base value bit selection 00 200 01 50 10 100 11 250 7.6 filter s used by the IQS133 the IQS133 devices employ various signal processing functions that includes the execution of various filters as described below. 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 cha nges 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 l ong t erm a veraging filter (iir type filter) which track s slow changes i n 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 functions such as identification of proximity and touch events. the lta is calculated from the count s (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 prox imity or touch event has been detected cause the cs to drift away from the lta. to compensate for these situations a halt timer (t halt ) has been defined . the halt timer is started when a proximity or touch event occurs (for the 133z, all the channels? filt ers 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 applicat ion. configuration: bank1 bit7 - 6 t halt 1 : t hatl 0 : 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 of the filte r will be halted as long as the touch condition applies. c x z o o m t o b o o s t m o d e a f t e r p r o x i m i t y d e t e c t e d c h a r g e c y c l e d u r a t i o n = t c h a r g e t s a m p l e t s a m p l e
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 12 of 23 all rights reserved. revision 1.6 october 2012 refer to application note azd024 - graphical representation of the iir filter for detail regarding the execution of the lta filter. 7.7 noise detection the iqs1 33 has advanc ed immunity to rf noise sources such as gsm cellular telephones, dect, bluetooth and wifi devices. d esign guidelines should however be followed to ensure the best noise immunity. 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 line s 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 an d gnd as well as between v reg 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 vddhi and gnd . another 100 pf capacitor can be placed in parallel with the 1uf capacitor betwe en v reg 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 . 7.8 guard channel configuration: bank2 bit1 cx1 block: guard channel enable bit selection 0 disabled 1 enabled whe n th e guard channel is enabled, the other touch outputs from the device are block ed when a touch condition is detected on ch1 (ch1?s touch output is still active) . this can prevent accidental activation when picking up a product, or give a blocking function against water or other environmental factors. 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 channel, and charges before each of the 3 input channels. ch0 is realised by conn ecting all three touch electrodes with internal switches. therefore: ch0 is a distributed electrode formed by the 3 touch electrodes. figure 8.1 charge transfer for IQS133. c h 0 p c h 1 p c h 2 c h 0 + c h 1 + c h 2 c x 0 c x 1 c x 2 c h p p r o x
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 13 of 23 all rights reserved. revision 1.6 october 2012 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 t o 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 1 - wire data protocol on one of the output pins (to 0 ). the function s of all the other output pin s are there fore lost when the device is put in streaming mode. data streaming can be enabled as indicated below: 9.1 entering data streaming mode configuration: bank2 bit5 streaming: 1 - wire data streaming mode bit selection 0 disabled 1 enabled 9.2 data streaming protocol when data streaming is enabled data is sent following each charge cycle. figure 9.1 illustrates the communication protocol fo r 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 t start . 2. following the sta rt bit a synchronisation byte (t init = 0xaa ) is sent. this byte is used by the mcu for clock synchronisation. 3. following t init the data bytes will be sent. 8 b ytes 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. figure 9.1 1 - wire streaming m ode d 7 d 6 d 5 d 4 d 3 d 2 d 1 d 0 t o 0 t i n i t t s t o p t d a t a s t o p C s t a r t s t o p C s t a r t s t a r t
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 14 of 23 all rights reserved. revision 1.6 october 2012 table 9.1 byte definitions for normal data streaming mode byte bit value 0 7:0 cs high byte 1 15:8 cs low byte 2 23:16 lta high byte 3 31:24 lta low byte 4 39 38 37 36 35 34 33 32 ati busy rf noise detect zoom active lp active not used (always 0) proximity event ch0 ch indication(1) ch indication(0) 5 47 46 45 44 43 42 41 not used not used compensation (5) compensation ( 4 ) compensation (3) compensation (2) compensation (1) 40 compensation (0) 6 55 54 53 52 51 50 49 48 not used not used not used multiplier (4) multiplier (3) multiplier (2) multiplier (1) multiplier (0) 7 63 62 61 60 59 58 57 56 not used not used not used not used touch ch 3 touch ch 2 touch ch 1 not used in the 4 th byte, the channel indication is represented as: t halt 1 : t hatl 0 : 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 inter nal reference capacitors to obtain optimum performance . ati adjusts internal circuitry according to two parameters, the ati multiplier and the ati compensation. the ati multiplier can be viewed as a course adjustment and the ati compensation as a fine adjustment. the ad justment 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 ov erlap. it may therefore be possible to select various combinations of ati multiplier and ati compensation settings to obtain the same count values . the
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 15 of 23 all rights reserved. revision 1.6 october 2012 sensitivity of the various options may however be different for the same counts . 10.1 automatic ati the iqs1 3 3 implements an automatic ati algorithm. this algorithm automatically adjusts the ati parameters to optimise the sens e electrodes connection to the device. the device will execute the ati algorithm whenever the device starts - up and when the count s 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 en tered 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 a n 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 sens e electrodes capacitance to accommodate a large range of changes in the environment of the application that influences the sensing electrode s . re - tuning only occurs during device operation when a relatively large sensitivity reduction is detected. this is to ensure sm ooth operation of the device during operation. re - tuning may temporarily influences the normal functioning of the device, but in most instances the effect will be hardly noticeable. shortly after the completion of the re - tuning process the sensitivity of proximity detec tion may be reduced slightly for a few seconds as internal filters stabilises . 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 n oise. 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 , ch 1 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 bit s 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
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 16 of 23 all rights reserved. revision 1.6 october 2012 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 - 40c to 85c supply voltage (vddhi C gnd ) 5.5v maximum pin voltage v ddhi + 0.5v maximum continuous current (for specific pins) minimum pin voltage gnd - 0.5v minimum power - on slope 10 0 v/s esd protection 3 kv maximum pin temperature during soldering maximum body temperature during soldering table 11.1 IQS133 general operating conditions description conditions parameter min typ max unit supply v oltage v ddhi 2.95 3.3 5. 50 v internal regulator o utput 2.95 v ddhi 5.0 v reg 2.35 2.5 0 2.65 v boost o perating current 2.95 v ddhi 5.0 i iqs1 33 b p 22 0 a normal o perating curr ent 3.3v i iqs1 33 n p 1 7.5 a low power o perating curr ent 3.3v i iqs1 33 lp 1 6. 3 a low power o perating curr ent 3.3v i iqs1 33 lp 2 4.8 a low power o perating current 3.3v i iqs1 33 lp3 4 . 3 a low power o perating current 3.3v i iqs1 33 lp 4 4 a low power o perating current 3.3v i iqs1 33 lp 5 3.8 a low power o perating current 3.3v i iqs1 33 lp 6 < 3.5 a
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 17 of 23 all rights reserved. revision 1.6 october 2012 table 11.2 IQS133z general operating conditions description conditions parameter min typ max unit supply v oltage v ddhi 2.95 3.3 5. 50 v internal regulator o utput 2.95 v ddhi 5.0 v reg 2.35 2.5 0 2.65 v boost o perating current 2.95 v ddhi 5.0 i iqs 133z b p 220 a normal o perating curr ent 3.3v i iqs 133z n p 32 .5 a low power o perating curr ent 3.3v i iqs 133z lp 1 11 a low power o perating curr ent 3.3v i iqs 133z lp 2 7.9 a low power o perating current 3.3v i iqs 133z lp3 6.9 a low power o perating current 3.3v i iqs 133z lp 4 6.4 4 a low power o perating current 3.3v i iqs 133z lp 5 6 a low power o perating current 3.3v i iqs 133z lp 6 < 6 a table 11.3 start - up and shut - down slope characteristics description conditions parameter min max unit por v ddhi slope 100v/s por 0.92 2.3 v bod bod 1 1.54 v table 11.4 p out and tout characteristics symbol description i source ( total ) conditions min typ max unit v oh output high voltage 16.5 ma v ddhi = 5v 4. 72 v 9.8 ma v ddhi = 3v 2. 8 symbol description i s ink ( total ) conditions min typ max unit v o l output low voltage 16 ma v ddhi = 5v 0. 48 v 9 ma v ddhi = 3v 0.3 6
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 18 of 23 all rights reserved. revision 1.6 october 2012 table 11.5 initial touch times description parameter min max unit bp 1 report rate 45 79 ms np report rate 54 102 ms lp6 report rate 54 2099 ms table 11.6 repetitive touch rates description conditions parameter sample rate = 5ms sample rate = 9ms unit all power modes zoom active response rate 2 > 15 > 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)
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 19 of 23 all rights reserved. revision 1.6 october 2012 12 mechanical dimensions figure 12.1 msop - 10 back view. figure 12.2 msop - 10 side view. figure 12.3 msop - 10 top view. figure 12.4 msop - 10 footprint. table 12.1 msop - 10 footprint dimensions from figure 12.4 . dimension [mm] pitch 0.50 c 4 . 4 0 y 1. 4 5 x 0. 3 0
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 20 of 23 all rights reserved. revision 1.6 october 2012 13 device marking revision x = ic revision number temperature range t = i - 40 c to 85 c ( industrial ) = c 0 c to 70 c (commercial) ic configuration 1 zzzzzz = configuration (hexadecimal) date code p = package house ww = week yy = year 1 configuration marking on the bottom of the ic i q s 1 3 3 x t z z z z z z p w w y y r e v i s i o n d a t e c o d e c o n f i g u r a t i o n m o d e t e m p e r a t u r e
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 21 of 23 all rights reserved. revision 1.6 october 2012 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. ic name iqs 133 = iqs1 33 configuration zzzzzz = ic configuration (hexadecimal) package type ms = msop - 10 bulk packaging r = reel ( 4 000pcs/reel) C moq = 4 000pcs t = tube (96pcs/tube , special order ) i q s 1 3 3 z z z z z z p p b i c n a m e c o n f i g u r a t i o n m o d e b u l k p a c k a g i n g p a c k a g e t y p e
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 22 of 23 all rights reserved. revision 1.6 october 2012 15 revision history the limitations for specific revision numbers are described below: revision device id package markings limitations 0 1901 iqs 133 eng 23010 cx floating between conversions 1 1902 110d iqs 133 25 110 212 1 1 high se nsitivity at start up. suggested p th = 8 (default = 2 may trigger po on start - up or lp exit in selected applications) 2 iqs 133z low power limitation , down to sub 8ua only.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 1 2 . IQS133/133z datasheet page 23 of 23 all rights reserved. revision 1.6 october 2012 16 contact information pretoria office physical address 160 witch hazel avenue hazel court 1, 1 st floor highveld techno park centurion, gauteng republic of south africa tel: +27 12 665 2880 fax: +27 12 665 2883 postal address po box 16767 lyttelton 0140 republic of south africa paarl office physical address 109 main street paarl 7646 western cape republic of south africa tel: +27 21 863 0033 fax: +27 21 863 1512 postal address po box 3534 paarl 7620 republic of south africa the following patents relate to the device or usage of the device: us 6,249,089 b1, us 6,621,225 b2, us 6,650,066 b2, us 6,952,084 b2, us 6,984,900 b1, us 7,084,526 b2, us 7,084,531 b2, us 7,119,459 b2, us 7,265,494 b2, us 7,291,940 b2, us 7,329,970 b2, us 7,336,037 b2, us 7,443,101 b2, us 7,466,040 b2, us 7,498,749 b2, us 7,528,508 b2, us 7,755,219 b2, us7,772,781, us 7,781,980 b2, ep 1 120 018 b1, ep 1 206 168 b1, ep 1 308 913 b1, ep 1 530 178 b1, zl 99 8 14357.x, aus 761094 iq switch ? , proxsense ? , lightsense?, airbutton? and the iq logo are trademarks of azoteq. the information appearing in this datasheet is believed to be accurate at the time of publication. however, azoteq assumes no re sponsibility arising from the use of the specifications described. 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 modi fication, no r recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. azoteq products are not authorized for use as critical components in life support devices or systems. no licenses to pat ents are granted, implicitly or otherwise, under any intellectual property rights. azoteq reserves the right to alter its products without prior notification. for the most up - to - date information, please refer to www.azot eq.com . www.azoteq.com proxsensesupport@azoteq .com
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