i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 1 of 7 all rights reserved. revision 1.0 . 2 november 2010 evaluation kit: user manual iq switch ? - proxsense tm series IQS127 ev - kit user manual table of content 1 introduction ................................ ................................ ................................ ................................ ............. 1 2 motherboard ................................ ................................ ................................ ................................ ............ 1 3 square daughter boar d ................................ ................................ ................................ ......................... 3 4 round daughter board ................................ ................................ ................................ .......................... 5 5 programming & stream ing ................................ ................................ ................................ .................... 6 1 introduction this user manual describes the IQS127 evaluation kit. the ev - kit i s made in two parts, consisting of a mother board and separate plug - in boards. it i s developed to facilitate application engineers and development engineers in evaluating the IQS127 capacitive proximity and touch sensor. leds are used to display the output of the device . the design of the ev - kit allows for flexibility, allowing the user to use the IQS127 in di rect mode, streaming mode to a pc, or use the small plug - in boards in an application circuit . 2 motherboard figure 2.1 shows the top view of the ev - kit mother board. its features include: ? battery powered ; or ? usb powered ? 15mm diameter button ? back - grid as shield ? back - grid a s ground ? back - grid as sense plate ? slide switch for programming or s treaming selection (see figure 2.3 ). figure 2.1 top - view of ev - kit mother board.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 2 of 7 all rights reserved. revision 1.0 . 2 november 2010 figure 2.2 box header for st reaming/programming. the mother board includes a box header for programming and streaming the IQS127 devices through azoteq configuration tools (ctxxx) to a pc , as well as t wo jumpers: ? w1 C for measuring current ? w 2 C for back - grid selection figure 2.3 shows the bottom view of the mother board. the daughter board s are powered by two 3v coin cell batteries, in series, which is regulated on the mother board to 4.5v. a ground pin and mini usb connector is also available to connect and review the effect of introducing larger ground references . . figure 2.3 bottom view of mother board.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 3 of 7 all rights reserved. revision 1.0 . 2 november 2010 3 square daughter board figure 3.1 shows the top view of the square daughter board. its features include: ? prox led ? touch led ? small pcb layout, 10.7mm x 10.7mm ? three possible assemblies: ? du al mode (d) ? shield mode (s) ? streaming mode (strm) ? indicated by ink marking on pcb figure 3.1 top view of square daughter board. when looking from the top, ic and pcb pins are mapped one - to - one. figure 3.2 shows the bottom view of the square daughter board. descriptions of the components are given in table 3.1 . the square daughter board can be wired into applications, by connecting vddhi (pin 5) , gnd (pin 2) and a sense plate (pin 6) from the application to the square daughter board. this allows the IQS127 to be tested in existing applications.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 4 of 7 all rights reserved. revision 1.0 . 2 november 2010 table 3.1 square daughter board component descriptions. component use typical value c 1 ,c 3 1 power supply decoupling capacitor 1uf , 100pf 1 c 2 ,c 4 1 internal regulator decoupling capacitor 1uf , 100pf 1 r1 & r2 led current limiting resistor 2k r3 cx series resistor (added esd protection) 2k r4 shield pull - up resistor (only for IQS127s) 10k figure 3.2 bottom view of square daughter board. 1 used for added rf immunity in extreme environments (gsm band)
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 5 of 7 all rights reserved. revision 1.0 . 2 november 2010 4 round daughter board figure 4.1 shows the top view of the round daughter board. its features include: ? bi - colour prox and touch led ? b utton on board ? backlighting through the button ? two possible assemblies: ? dual mode ? streaming mode figure 4.1 top v iew of round daughter board. figure 4.2 shows the bottom view of the round daughter board. component descriptions are given in table 4.1 . th e round daughter board makes i t extremely easy to wire the IQS127 into existing applications for testing. it needs only vddhi (pin 5) and gnd (pin 2) , as it ha s a button and output leds mounted on the pcb already . to program the round daughter board through the mother board, r3 (2k) should be moved to r4 footprint . r4 should also be placed instead of r3, to connect larger/different s ense plates to the IQS127 (pin 6) . table 4.1 component descriptions for round daughter board. component use typical value c 1 ,c 3 2 power supply decoupling capacitor 1uf , 100pf 2 c 2 ,c 4 2 internal regulator decoupling capacitor 1uf , 100pf 2 r1 & r2 led current limiting resistor 2k r3 or r4 cx selection resistor (added esd protection) 2k ds1 bi - colour led n/a 2 used for added rf immunity in extreme environments (gsm band)
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 6 of 7 all rights reserved. revision 1.0 . 2 november 2010 figure 4.2 bottom view of round daughter board. 5 programming & streaming the ev - kit is by default in standalone mode. however, for some applications it is useful to evaluate the raw data of the IQS127. to be able to use this feature, the IQS127 needs to be in streaming mode. t he d aughter boards can be programmed through the mother board. begin by: ? inserting the daughter board. ( remember to move r3 to r4 ) ? move slide switch s2 to programming. see figure 5.1 figure 5.1 programming switch s2.
i q switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . evaluation kit: user manual page 7 of 7 all rights reserved. revision 1.0 . 2 november 2010 ? c onnect the e v - kit to a pc through a ct200. figure 5.2 connect ct200 to pc ( use 10 pin ribbon cable to ev - kit ) . ? burn the IQS127 into streaming mode, by using usbprog.exe ( available on the website: www.azoteq.com ). ? move s2 back to sense after programming. ( and r3 back to r4 for the round daughter board ) ? streaming can now be done through visualproxsense. 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, e p 1 206 168 b1, ep 1 308 913 b1, ep 1 530 178 b1, zl 99 8 14357.x, aus 761094 iq switch?, proxsense?, airbutton ? and the iq logo are trademarks of azoteq. the informa tion appearing in this application note is believed to be accurate at the time of publication. however, azoteq assumes no responsibility arising from the use of the information. the applications mention ed 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 or otherwise. azoteq products are not authorized for use as critical components in life support devices or systems. no licenses to patents are granted, implicitly or otherwise, under any intellectual property rights. azoteq r eserves the right to alter its products without prior notification. for the most up - to - date information, please contact proxsensesupport@azoteq.com or refer to the website: www.azoteq.com
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