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SX9325_datasheet_Rev1_STD_121017_Semtech_Confidential_For_Goerte....pdf

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    SX9325 Ultra Low Power, Smart Proximity Sensor for SAR Active Mode: Doze Mode: Sleep Mode: ammable Interrupt or R 2 Sub-Addresses Selectable by Pin. Addresses Selectable by P ddresses Selectable by P able Interrupt or o Reset Sources: POR o Reset Sources: POR -40°C to +85°C Operat 40°C to +85°C Opera -40°C to +85°C Operation Compact Size: 0.92 Compact Size: 0.92 Programmable Interrupt or Real-Time Status pin set Two Reset Sources: POR, Soft Reset m WLCSP package LCSP package Compact Size: 0.92 x 1.69 mm WLCSP package Pb & Halogen F S/WEEE compliant Pb & Halogen Free, RoHS/WEEE compliant Status pi Capacitance Resolution down to 0.004fF 004fF on up to 200pF n up to 200pF Capacitance Offset Compensation up to 200pF pensation ensation Advanced Temperature Compensation KEY PRODUCT FEATURES ~1.8V Input Supply Voltage Up to 3 Capacitive Sensor Inputs Automatic Calibration Ultra Low Power Consumption sumption on 22 uA 22 uA A 6 uA uA 6 uA 1.75 uA 5 uA 1.75 uA 400kHz I2C Serial Interface Serial Interface Interface WIRELESS & SENSING GENERAL DESCRIPTION The SX9325 is a capacitive Specific Absorption Rate (SAR) controller. The SX9325 can use any of its three sensor inputs. 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 stringent emission regulations' criteria and Specific Absorption Rate (SAR) standards. Operating directly from an input supply voltage of 1.7 to 2V, the SX9325 outputs its data via 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 detection. The SX9325 includes an on-chip auto-calibration controller r that regularly performs sensitivity adjustments to maintain tain peak performance over a wide variation of temperature, ature, humidity and noise environments, providing simplified implified ied product development and enhanced performance. Confidential Only Status pin S/WEEE compliant On b & HalogennfAPPLICATIO o GGoGGGGGoertekoks okek ORMATIONtek tekrt NumbeekSX9325ICSTRT SX9325rtert1 3000 Units/reel SX9325ICSTRT 1teSX9325EV Semtech echCIRCUIT 00 Units/reeloer GoeoeooGoGo mmtmtmt emem FoForr rorrrorr FoFF Package Marking WLCSP-8 T8CS Eval. Kit Mobile Phones Mo Mo Notebooks Tablets Part Number SX9325ICSTRT 1 SX9325EVKA TYPICAL APPLICATION CIRCUIT 1 3000 Units/reel APPLICATIONS ORDERING INFORMATION - Revision 1 October 12, 2017 © Semtech 1 www.semtech.com
    WIRELESS & SENSING SX9325 Ultra Low Power, Smart Proximity Sensor for SAR Table of Contents ...... ............................. ......................... .............................. .................. ........................ ................. 1.1 1.2 1.3 2.1 2.2 2.3 2.4 3.1 3.2 3.3 Pin Diagram Marking Information Pin Description Introduction Scan Period Analog Front-End (AFE) Absolute Maximum Ratings Operating Conditions Thermal Characteristics Electrical Specifications ................. .............................. ......................... ............................. ...................... ................. ............................. Confidential .............. Only44 Goertek .... Semtech B For es GENERAL DESCRIPTION .......................................................................................................................... 1 KEY PRODUCT FEATURES ....................................................................................................................... 1 ...................... 1 ............... 1 APPLICATIONS ......................................................................................................................................... 1 ........................ 1 ........... ORDERING INFORMATION ........................................................................................................................ 1 TYPICAL APPLICATION CIRCUIT .............................................................................................................. 1 GENERAL DESCRIPTION ................................................................................................................. 4 1 4 4 44 5 55 ELECTRICAL CHARACTERISTICS ................................................................................................... 6 ....................... 6 ........... 6 6 66 6 6 6 6 7 PROXIMITY SENSING INTERFACE ................................................................................................... 9 9 9 10 10 12 12 12 12 13 13 13 15 15 16 18 18 19 20 3.6.1 3.6.13.6.1 20 3.6.2 3.6.23.6.2 20 3.6.3 3.6.36.3 20 I2C INTERFACE ............................................................................................................................. 21 I2CI2C 21 21 21 RESET ........................................................................................................................................... 23 23 23 INTERRUPT .................................................................................................................................... 24 24 24 REGISTERS ................................................................................................................................... 25 www.semtech.com Digital Processing rocessing ng Overview erview ew PROXRAW Update PROXRAW Update PROXRAW Update PROXUSEFUL Update PROXUSEFUL Up PROXUSEFUL PROXAVG Update PROXAVG Upd ROXAVG Upd PROXDIFF Update PROXDIFF U PROXDIFF PROXSTA PROXSTAT Update PROXSTA Host Operation Host Opera Host Opera Operational Modes Operatio Operati Capacitive Sensing Basics am AFE Block Diagram Capacitance-to-Voltage Conversion (C-to-V) o-Voltage Co -Voltage C V) Shield Control ol Offset Compensation mpensation ation Analog-to-Digital Conversion (ADC) ) to-Digital Conversio Active A Doze Sleep FACE ................... ............. FACE Introduction duction duction I2C Write te te I2C Read 7 Revision 1 October 12, 2017 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 4.5 3.4.6 3.4.6 Power-up Assertion and Clearing 4.1 4.4 4.2 4.3 5.1 5.2 6.1 6.2 Power-up Software Reset 3.4 3.5 3.5 3.6 3.6 © Semtech 2 2 3 4 44 5 6 sio gital Conve
    WIRELESS & SENSING 8 8.1 8.2 9.1 9.2 9 SX9325 Ultra Low Power, Smart Proximity Sensor for SAR Outline Drawing Land Pattern Typical Application Circuit External Components Recommended Values APPLICATION INFORMATION ........................................................................................................ 40 40 40 PACKAGING INFORMATION .......................................................................................................... 41 ................... 41 ............ 4 41 4141 42 44 Semtech Confidential 40 For Goertek Only Revision 1 October 12, 2017 © Semtech 3 www.semtech.com
    SX9325 Ultra Low Power, Smart Proximity Sensor for SAR WIRELESS & SENSING 1 GENERAL DESCRIPTION 1.1 Pin Diagram Confidential fidfiden fide Only ononf OOO CCo ertek kek erte te Semtech chcch er Goe Fo 1.2 Marking Information rking Information Information Figure 1: Pin Diagram Figure 1: Pin Diagram Pin Diagr Figure 2: Marking Information Revision 1 October 12, 2017 © Semtech 4 www.semtech.com
    Digital Input SDA NIRQ Digital Input/Output Digital Input/Output SX9325 Ultra Low Power, Smart Proximity Sensor for SAR Number put or I2C Sub-Address 2C Sub-Addre Table 1: Pin Description ription A2 A4 A3 B4 B3 A1 B1 B2 Type Power Ground Analog Analog Analog I2C Data, requires pull-up resistor. Interrupt Output and Pause Input, requires pull-up resistor. Pause Input, requ WIRELESS & SENSING 1.3 Pin Description Name VDD GND CS0 CS1 CS2 SCL Description Power Supply, requires decoupling capacitor. Ground Secondary Capacitive Sensor Input Primary Capacitive Sensor Input Primary Capacitive Sensor Input or I2C Sub-Address Input. p resistor. I2C Clock, requires pull-up resistor. ause Input, requdential alllalalial tiati rnt stor. enull-up resistor. up resistor. den de Semtech Confideanda stor. lyynlyyy For Goertek Onlyyyp resistor. fidscription Revision 1 October 12, 2017 © Semtech 5 www.semtech.com
    SX9325 Ultra Low Power, Smart Proximity Sensor for SAR Symbol Table 3: Operating Conditions Max 2.2 3.9 VDD+0.3 Min -0.5 -0.5 -0.5 -0.5 -10 -40 - -50 8 e device. Th s beyond the “Opera beyond the “Opera d periods may affect VDD VPULL VIN IIN TJCT TRE TSTOR ESDHBM Parameter Supply Voltage Pull-up Voltage Input Voltage (non-supply pins) Input Current (non-supply pins) Operating Junction Temperature Reflow Temperature Storage Temperature ESD HBM (ANSI/ESDA/JEDEC JS-001) WIRELESS & SENSING 2 ELECTRICAL CHARACTERISTICS 2.1 Absolute Maximum Ratings Stresses above the values listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these, or any other conditions beyond the “Operating Conditions”, is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability and proper functionality. CCCConfidentiall to the device. This periods may affect ntntntintiMax ttia nt-0.5 2.22ntntnt ent den-0.5 -0.5 enenen -0.5 dddeeede-10 -10 ddde OnlyV V y3 3yylyy10 260Onlynlyy mA mA lylylyynlyy125 25 °C nlynlynlyynlyy Ony fidTTJCTJ -40-4fidfidfidfidTTRERE fidfidfidfid 150 15OOOnnOn- - OOOOOO TTSTORSTO nfifififESDE HBMBM nf ooon: Absolute Maximum Goertek gs tek tetek tekMinekek tekVVDDDD lute MaximumCC teteteteTTA Arteteterttetperating Conditions Semtech hhhh Ta mteermtemtemtThermal Resistance – GoGoGoGtic Airflow) mal Resistance –mtmNote: tic Airflow) GGle For o Arfrom a package in s Note: JA is calculated from a package in still air, mounted to 3" x 4.5", 4-layer FR4 PCB per JESD51 standards. ote: JAA is c Note: VDD and VPULL are fully independent, i.e. can be turned ON/OFF separately and in any sequence without creating any leakage current. age current. urrent. ULL are fully indepen fully indepe Parameter Thermal Resistance – Junction to Air (Static Airflow) VDD TA ting Condit e. can be turned ON e turned ON Parameter Supply Voltage Ambient Temperature 2.3 Thermal Characteristics rmal Characteris Characteris 2.2 Operating Conditions Table 2: Absolute Maximum Ratings Unit V mA °C kV Unit V °C 10 125 260 260 150 - Max 2 85 Table 4: Thermal Characteristics Symbol JA Typical 120 Unit °C/W Symbol Min 1.7 1 -40 isAA a package in Revision 1 October 12, 2017 © Semtech 6 www.semtech.com
    SX9325 Ultra Low Power, Smart Proximity Sensor for SAR Min 1.75 1.75 IACTIVE Doze Active ISLEEP IDOZE +/-1.325 CRANGEL CRANGEH 6 6 22 Typ. Max Unit - - - - 5 14 1 45 Measurement Range AGAIN=1000, GAIN01/23=001 Symbol Conditions Power down. (I2C listening) PHEN = 0000 Capacitive Sensing Interface SCANPERIOD = 30ms FREQ = 100kHz RESOLUTION = 64 PHEN = 0001 SCANPERIOD = 400ms FREQ = 100kHz RESOLUTION = 64 PHEN = 0001 E01/23 = ARANGE01/23 = mall 0/Small ARANGE01/23 = NGE01/23 = 1/Large 1/Large Parameter Current Consumption Sleep (no phase enabled) WIRELESS & SENSING 2.4 Electrical Specifications All values are valid within the full operating conditions unless otherwise specified. Typical values are given for TA= +25°C, VDD=1.8V unless otherwise specified. Confidentialalalax alal Unitalal tialal tial ntia 5 5 tititiaaa 6 ntintinti ent den 22 22eeennn fidediddeideee Only5 ylyynlynlylylylylyynlyy325 Onlyy pnlynlynlyy fidNGE01/23 = - fidfidfidfidARANGE01/23 = - OOOnnnOOn16 LargenfifififinGAIN=0110, 16 OOOOOO04 4OOOO 0/Small malooon CoARANARAN 1/LCoCoCCo Goertek- kk- 0.kkkek4.63 4.63 eeekkk tek Q01/23CC *teteterte Semtech TTSCANSCAN D = 1.8V.ertrtrtrt SCASChchencies s FFTrim ArccchhhchFrequencies Tempecececec& Scan Frequencies +25°C, Full VDGoe nge, VDD = 1.8VeAround Trim Result. asurement Phamte pendency cyteeeernal DC Cap. to Groun GGGGoGGGLG eemuts: SDA, NmeOutput Low Cu Output Low CeemeSeSeSeSeInputs: SSeSeInput InSeSeSe ForrIOL04OL04 rIIOL06OL06 ooror ForNIRorge ge VIHIH Fooooge ge VFoooo InInSSS ent ent FF rogrammable rogrammable Programmable with EQ01/23 FREQ01/23 Programmable with P h SCANPERIOD Around Nominal Values. inal Values. Values. TA = +25°C, VDD = 1.8V. C, VDD = 1.8V. Around Trim Result. d Trim Result. m Result. Full TA range, VDD = 1.8V. TA range, VDD = 1.8V Around Trim Result Around Trim Result. TA = +25°C, Full VDD range. TTA = +25°C, Full VD Sampling & Scan Frequencies Trim Accuracy uencies Sampling & Scan Frequencies Temperature Dependency ependency enc Sampling & Scan Frequencies an Frequencies VDD Dependency External DC Cap. to Ground C Cap. to Groun per Measurement Phase er Measurement Phase Outputs: SDA, NIRQ ARANGE01/ ANGE01 ARANGE01/23 = 0/Small ARANGE01/23 = 1/Large Nominal Sampling Frequencies VOL 0.32V VOL 0.6V VIH VIL IL VHYS Measurement Resolution AGAIN=0110, GAIN=01 GAIN01/23=100 GAIN01/23=100 GAIN01/23=100 Nominal Scan Periods Output Low Current - - - - - - - IOL04 IOL06 - - - - - - - - - - % % % - - - - - - 0.04 x VDD -0.5 -1 V uA V pF pF pF bits - - - - NBIT CRESL - - - 3 6 0.7 x VDD FTrim FFTemp FTemp FVDD kHz ms 0.004 0.008 0.0 0.3 x VDD 250 4000 200 pF +/-1 +/-0.6 +/-2.65 +/-2.65 +/-2.65 16 CRESH FS TSCAN 3.6 1 - 4.63 -* -4 - - - uA fF fF CDC mA +4 Inputs: SCL, SDA, NIRQ Input High Voltage Input Low Voltage Input Leakage Current Hysteresis Miscellaneous Power-up Time TPOR - - 1 ms * Min is achieved when SCANPERIOD=00000 and determined by the total measurement time. Table 5: Electrical Specifications Revision 1 October 12, 2017 © Semtech 7 www.semtech.com
    WIRELESS & SENSING Parameter I2C Timing Specifications (Cf. figure below) SCL clock frequency fSCL SCL low period SCL high period Data setup time Data hold time Repeated start setup time Start condition hold time Stop condition setup time Bus free time between stop and start Data valid time Data valid acknowledge time Input glitch suppression Note 1: Minimum glitch amplitude is 0.7VDD at High level and Maximum 0.3VDD at Low level. tSP SX9325 Ultra Low Power, Smart Proximity Sensor for SAR - - - 0.1 0 0 1.3 0.6 400 - - - - - - - - - kHz kHz - - - - tLOW tHIGH Max Min Typ Unit tSU;STA tHD;STA tSU;DAT tHD;DAT Symbol Conditions Confidential llllll400 kHz lallal- - ialalal ntia tia- - - tititiaa - ntintintinti - - ntntnt en0.6 - eeennn de0.6 0.6 dddeeeide0.6 idfidideee Onlyus yyy- ylyylyy- - lynlyynlyy - OOOnlynlyy Ony fid1.fidfidfidfid 0OOOnnOOn nfififif onoNote 1 1 oCoon 0OOOOOO 50OOOO CoCoCovel and Maximum 0.3V rtek - - kkkk. el and Maximum 0.3VDD Table 6: I2C Timing Specifications able 6: I2C Timin ifications ions ble 6: I2C Tim Note 1 tVD;ACK tSU;STO tVD;DAT - - - - - - - - - - - tBUF - - - - - - - 0.9 0.9 0.6 6 0.6 0.6 1.3 0.9 0.9 50 ns us Figure 3: I2C Timing Revision 1 October 12, 2017 © Semtech 8 www.semtech.com
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