wireless & sensing revision 5 oc t 30 , 2014 ? 2014 semtech corporation www.semtech.com 1 SX9306 ultra low power , smart proximity sensor for sar g eneral d escription the sx 930 6 is an ultra - low power capacitive specific absorption rate (sar) controller that accurately discriminates between an inanimate object and human body proximity. the resulting detection is used in portable electronic devices to reduce and control radio - frequency (rf) emission power in the presence of a human body, enabling significant performance advantages for manufacturers of electronic devices with electro - magnetic radiation sources to meet stringe nt emission regulations' cri teria and specific absorption rate (sar) standards. operating directly from an input supply voltage of 2.7 to 5.5v, the sx930 6 outputs its data via a 1.65 C 5.5v host compatible i2c serial bus. the i2c serial communication bus port is compatible with 1.8v host control to report body detection/proximity and to facilitate parameter settings adjustment. upon proximity detection, the nirq output asserts, enabling the user to either determine the relative proximity distance, or simply obtain an indication of d etection. the sx930 6 includes an on - chip auto - calibration controller that regularly performs sensitivity adjustments to maintain peak performance over a wide variation of temperature, humidity and noise environments, providing simplified product developm ent and enhanced performance. in qfn package, a dedicated transmit enable ( txen ) pin is available to synchronize capacitive measurements for applications that require synchronous detection, enabling very low supply current and high noise immunity by only m easuring proximity when requested. k ey p roduct f eatures ? 2.7 C 5.5v input supply voltage ? up to 4 capacitive sensor inputs ? patent ed on - chip smart engine f or human detection and advanced sar control ? high resolution capacitive sensing d own to 0.08ff ? capac itance offset compensation up to 30 pf ? configurable proximity detection (single/combined) ? integrated high performance rf shield for enhanced noise immunity ? extremely low temperature drift for stable measurement ? reduced vdd ripple susceptibility ? active senso r guarding ? automatic calibration ? ultra low power consumption: ? active mode: 170 ua ? doze mode: 18 ua ? sleep mode: 2.5 ua ? 400 k hz i2c serial interface ? four programmable i2c sub - addresses ? input levels compatible with 1.8v host processors ? open drain nirq inter rupt pin ? up to three reset sources: por, soft reset , nrst ? - 40c to +85c operation ? 1.6 3 x1.2 3 mm wlcsp or 3x3mm thin qfn package ? qfn version pin - to - pin compatible with sx9300/sx9500 ? pb & halogen free, rohs/weee compliant a pplications ? sa r compliant systems ? t ablets/phablets ? mobile phones ? wearable devices o rdering i nformation part number package marking SX9306icstrt (1) wlcsp - 12 m h 06 SX9306icbtrt (2) wlcsp - 12 m b 06 SX9306iultrt qfn - 20 a39e SX9306evka eval. kit - (1) without backside coating (2) with backsi de coating t ypical a pplication c ircuit c a p s e n s e a n d a d c p o r o s c a u t o c a l & c o n t r o l c s 0 s c l s d a v d d g n d c s g s e n s o r s s x 9 3 0 6 n i r q s v d d a 1 c s 2 c s 3 s m a r t e n g i n e h o s t a 0 c s 1 * * i n t e r n a l / n o t - b o n d e d o u t i n w l c s p p a c k a g e n r s t * , t x e n * r f s h i e l d
wireless & sensing revision 5 oc t 30 , 2014 ? 2014 semtech corporation www.semtech.com 2 SX9306 ultra low power , smart proximity sensor for sar ? semtech 2014 all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is b elieved to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent or other industrial or intellectu al property rights. semtech assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range. semtech products are not designed, intended, authorized or warranted to be suitable f or use in life - support applications, devices or systems or other critical applications. inclusion of semtech products in such applications is understood to be undertaken solely at the customers own risk. should a customer purchase or use semtech product s for any such unauthorized application, the customer shall indemnify and hold semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. notice: all refe renced brands, product names, service names and trademarks are the property of their respective owners. semtech corporation wireless and sensing products division 200 flynn road, camarillo, ca 93012 phone: (805) 498 - 2111 fa x: (805) 498 - 3804 contact information
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