SX9310
Ultra-Low Power
Smart Proximity Sensor for SAR
WIRELESS & SENSING PRODUCTS
Features
Description
•ꢀ
2.7Vꢀ–ꢀ5.5Vꢀcoreꢀsupplyꢀ(VDD)
TheꢀSX9310ꢀisꢀaꢀcapacitiveꢀSpecificꢀAbsorptionꢀRateꢀ(SAR)ꢀcontroller.ꢀꢀ
TheꢀSX9310ꢀcanꢀuseꢀtwoꢀofꢀtheꢀthreeꢀsensorꢀinputsꢀcoupledꢀtoꢀ
itsꢀsmartꢀengineꢀforꢀSARꢀtoꢀaccuratelyꢀdiscriminateꢀbetweenꢀanꢀ
inanimateꢀobjectꢀandꢀhumanꢀbody.ꢀTheꢀthirdꢀsensorꢀinputꢀcanꢀbeꢀ
usedꢀindependentlyꢀforꢀstandardꢀcapacitiveꢀsensing.
ꢀ 1.65Vꢀ–ꢀ2Vꢀhostꢀinterfaceꢀsupplyꢀ(SVDD)
ꢀ 1.65Vꢀ–ꢀ5.5Vꢀcompliantꢀhostꢀinterfaceꢀ(VPULL)
UpꢀtoꢀthreeꢀSARꢀcapacitiveꢀsensorꢀinputsꢀ
ꢀ Patentedꢀon-chipꢀsmartꢀengineꢀforꢀSARꢀ(Bodyꢀversusꢀꢀ
inanimateꢀobjectꢀdetection)
•ꢀ
ꢀ Capacitanceꢀresolutionꢀdownꢀtoꢀ0.08fF
ꢀ Capacitanceꢀoffsetꢀcompensationꢀupꢀtoꢀ100pF
ꢀ IntegratedꢀRFꢀshield
ꢀ Advancedꢀtemperatureꢀcompensation
Automaticꢀcalibration
Theꢀresultingꢀdetectionꢀisꢀusedꢀinꢀportableꢀelectronicꢀdevicesꢀtoꢀ
reduceꢀandꢀcontrolꢀradio-frequencyꢀ(RF)ꢀemissionꢀpowerꢀinꢀtheꢀ
presenceꢀofꢀaꢀhumanꢀbody,ꢀenablingꢀsignificantꢀperformanceꢀ
advantagesꢀforꢀmanufacturersꢀofꢀelectronicꢀdevicesꢀwithꢀelectro-
magneticꢀradiationꢀsourcesꢀtoꢀmeetꢀstringentꢀemissionꢀregulations’ꢀ
criteriaꢀandꢀSARꢀstandards.ꢀꢀ
•ꢀ
•ꢀ
•ꢀ
Built-inꢀstartupꢀproximityꢀdetection
Ultra-lowꢀpowerꢀconsumption
ꢀ Activeꢀmode:ꢀ70µA
ꢀ Dozeꢀmode:ꢀ8µA
ꢀ Sleepꢀmode:ꢀ2.5µA
400kHzꢀI2Cꢀserialꢀinterface
Programmableꢀinterruptꢀorꢀreal-timeꢀstatusꢀpin
UserꢀNVMꢀforꢀcustomꢀdefaultꢀregistersꢀvaluesꢀ(Standaloneꢀmode)
Twoꢀresetꢀsources:ꢀPORꢀandꢀsoftꢀreset
-40°Cꢀtoꢀ+85°Cꢀoperation
TheꢀSX9310ꢀoperatesꢀdirectlyꢀfromꢀanꢀinputꢀsupplyꢀvoltageꢀofꢀ2.7Vꢀtoꢀ
5.5V,ꢀwhileꢀtheꢀI2Cꢀserialꢀcommunicationꢀbusꢀportꢀisꢀcompatibleꢀwithꢀ
1.8Vꢀhostꢀcontrolꢀtoꢀreportꢀbodyꢀdetection/proximityꢀandꢀtoꢀfacilitateꢀ
parameterꢀsettingsꢀadjustment.ꢀꢀUponꢀproximityꢀdetection,ꢀtheꢀNIRQꢀ
outputꢀasserts,ꢀenablingꢀtheꢀuserꢀtoꢀeitherꢀdetermineꢀtheꢀrelativeꢀ
proximityꢀdistance,ꢀorꢀsimplyꢀobtainꢀanꢀindicationꢀofꢀdetection.ꢀꢀ
•ꢀ
•ꢀ
•ꢀ
•ꢀ
•ꢀ
•ꢀ
TheꢀSX9310ꢀincludesꢀanꢀon-chipꢀauto-calibrationꢀcontrollerꢀthatꢀ
regularlyꢀperformsꢀsensitivityꢀadjustmentsꢀtoꢀmaintainꢀpeakꢀ
performanceꢀoverꢀaꢀwideꢀvariationꢀofꢀtemperature,ꢀhumidityꢀandꢀ
noiseꢀenvironments,ꢀprovidingꢀsimplifiedꢀproductꢀdevelopmentꢀandꢀ
CompactꢀSize:ꢀ1.362ꢀxꢀ1.332mmꢀWLCSPꢀpackage
•ꢀ
Pbꢀ&ꢀhalogenꢀfree,ꢀRoHS/WEEEꢀcompliant
enhancedꢀperformance.
Applications
Ordering Information
•ꢀ
•ꢀ
•ꢀ
•ꢀ
Mobileꢀphones
Wearableꢀdevicesꢀ
Tablets
Part Number
Package
Marking
Units/Reel
SX9310ICSTRT
SX9310EVKA
WLCSP-9
Eval.ꢀKit
MO8B
-
3000
-
Notebooksꢀ
•ꢀ
Mobileꢀhotspotsꢀ
Typical Application Circuit
V
DD
RF Shield
POR
OSC
SVDD
CS1
CS2
Capacitive
Sensing
and ADC
V
PULL
Smart
Engine
SCL
SENSORS
SDA
NIRQ
HOST
AUTO CAL &
CONTROL
GND
SX9310
SX9310
Final Datasheet
June 22, 2017
1 of 2
Semtech
www.semtech.com
Rev 2.0