IST8315 Brief Datasheet, Version 1.0

Transcription

1 IST8315 3D Mag gnetometer Datasheet (Brief) IST8315 Brief Datasheet, ersion 1.0 1

2 Table of Contentss 1 GENERAL DESCRIPTION BLOCK DIAGRAM, PACKAGE DIMENSION AND APPLICATION CIRCUIT Block diagram Package Dimensions Application Circuits and Pin Descriptions ELECTRICAL SPECIFICATIONSS Absolute Maximum Ratings Recommended Operating Conditions Electrical Specificationss Magnetic Sensor Specifications Power On Reset (POR) Specifications ORDERING INFORMATION IST8315 Brief Datasheet, ersion 1.0 2

3 1 General Description isentek IST8315 is a 3-axis digital magnetometer with 1.6x1.6x1.2mm 3, 12-pin BGA package. It is an integrated chip with 3-axis magnetic sensors, digital control logic, built-in temperature compensation circuit and self-test function. IST8315 provides an I 2 C digital outpu with fast mode up to 400kHz. The ultra-high outpu data rate, ultra-low noise, ultra-low hysteresis and excellent temperature drift performance features make it a perfect candidate for highh speed, high accuracy applications. Features Single chip 3-axis magnetic sensor 1. 6x1.6x1.2mmm 3, 12-pin BGA packagee I 2 C slave, Fast Mode up to 400kHz 14-bit data output Built-in FIFO with 32 depths for each axis Ultra-high output data rate with maximum value of 1000Hz Dynamic range of ±1000uT. Ultra-low hysteresis (<0.1%FS) Ultra-low sensitivity temperature drift (±0.025%/ o C) Ultra-low offset temperature drift (0.016uT/ o C) High precision temperature compensation W Wide operating temperature range Built-in self-test function Built-in noise suppression filter Software and algorithm support available (For tilt compensatio n, soft/hard-iron calibration) Applications Augmented/irtual Reality Applications Quadcopter/Dronee Applications Navigation Applications Industrial Applications Magnetometry IOT devices Heading Gaming IST8315 Brief Datasheet, ersion 1.0 3

4 2 Block Diagram, Package Dimension and Application Circuit 2.1 Block diagram ADD SS CAD0 CAD1 Regulator 3-Axis AMR Sensing Elements MUX Low Noise AMP ADC Digital Control Logic SDA SCL DRDY RSTN Set/Reset Controller Clock Generator Trimming Logic Temperature Compensation Circuit OTP PP C1 DDD Figuree 1. Block Diagram 2.2 Package Dimensions IST8315 BGA Top iew (Looking Through) IST8315 Brief Datasheet, ersion 1.0 4

5 IST8315 BGA Side iew ±0.04 IST8315 BGA 3D Top iew Z+ X+ Y+ Unit: mm Tolerance: ±0.1mm IST8315 Brief Datasheet, ersion 1.0 5

6 2.3 Application Circuits and Pin Descriptions Slave Address Select CAD1 CAD0 Address (7-bit) Address (8-bit) SS SS 0CH 18H SS DD 0DH 1AH DD SS 0EH 1CH DD DD 0FH 1EH *if CAD1 and CAD0 are floating, I 2 C address will be 0CH/18H. *if CAD1 and CAD0 are NOT floating, extra current may flow into/out of them. (max. ~90uA) ADD 4.7uF uF To MCU /GPIB 6 5 RSTN DDD PP C1 CAD1 IST8315 Top iew CAD0 SS ADD K 4.7K DDD 0.1uF SDA SCL NC DRDY SCL SDA Figure 2. IST8315 Application Circuit Pin *1 Name Function 1 DRDY Data ready 2 NC Not use 3 SCL I C serial clock 4 SDA I C serial data 5 PP Test pin, connect to DDD or keep floating 6 DDD Digital supplyy voltage, 1. 72~3.6 7 RSTN Reset 8 C1 Set/Reset function 9 CAD1 I C slave address select, internally pulled to high by default 10 CAD0 I C slave address select, internally pulled to low by default 11 SS GND 12 ADD Analog supply voltage, 2.4~3.6 *1 *2 Please refer to Figure 2 on page Please keep CAD1 floating if PP is floating. IST8315 Brief Datasheet, ersion 1.0 6

7 3 Electrical Specifications 3.1 Absolute Maximum Ratings Parameter Storage Temperature Analog Supply oltage Digital Supply oltage Digital Input oltage 1 Electrostatic Discharge oltage* 2 Electrostatic Discharge oltage* 3 Electrostatic Discharge oltage* Reflow Classification 1. Human Body Model (HBM) 2. Machine Model (MM) 3. Charge Device Model (CDM) Symbol Limits TSTG -40 to +150 ADD -0.5 to DDD -0.5 to IN -0.3 to DDD+0.3 ESD_HBM to 4000 ESD_MMM -300 to 300 ESD_CDM -700 to 700 JESD22-A113 with 2600 o C Peak Temperature Unit o C 3.2 Recommendedd Operating Conditions Parameter Symbol Min. Typ. Max. Unit Operating Temperature TA o C Analog Supply oltage ADD Digital Supply oltage DDD Electrical Specifications (Operating conditions: TA=+25 ; ADD=2.5; DDD=1.8; 4.7µ µf ceramic capacitors tied to C1 pin with maximum allowed line width and 5mm distance.) IST8315 Brief Datasheet, ersion 1.0 7

8 Parameter Symboll Conditions Min. Typ. Max Unit Operating Current IDD3A Full operation with OSR* 1 = =1 setting, at 10 sps sps sps 100 sps ua 200 sps sps sps spss Suspend Current ISPD 2 ua Output Data Rate ODR * Hz (ODR) Over Sampling OSR 1 32 Rate* 1 Input Low oltage IL 0 DDDD *30% Input High oltage IH DDD DDDD *70% Output Low oltage OL IOL= + +4 ma 0 DDDD *20% Output High oltage OH IOH= -100 ua DDD DDDD (Exceptt SCL and SDA) 1. Register OSRCNTL(0x41) controls OSR setting Hz ODR can be achieved with OSR = 1. *80% 3.4 Magnetic Sensor Specifications (Operating conditions: Ta=+25 ; ADD=2.5; DDD=1.8; 4.7µFF ceramic capacitors tied to C1 pin with maximum allowed line width and 5mm distance.) Parameter Symbol Condition Min. Typ. Max Unit Dynamic Range DR TA=25 o C ±1000 ut Linearity LIN 0.5 %FS Resolution RES 0.3 ut/lsb Sensitivity SEN 3.3 LSB/uT Zero Gauss Offset ZGD ±0.3 ut IST8315 Brief Datasheet, ersion 1.0 8

9 Hysteresis HS 0.1 %FS Sensitivity Temperature Drift TD_S -40 ~ 85 o o C ±0.025 %/ o C Zero-B Offset Temperature Drift TD_O -40 ~ 85 o o C ut/ o C 3.5 Power On Reset (POR) Specificatio ons ADD PSTO 0v POR PSOI POR PSTO: Power Supply Turn Off voltage PSOI: Power Supply Turn Off Interval POR: Power On Reset PSTO: max=0.7volt PSOI: min=10ms POR: max:50ms When POR circuit detects the rise of ADD voltage, it resets all internal circuits and initializes all registers. After reset, IST8315 transits to Stand-By mode. IST8315 Brief Datasheet, ersion 1.0 9

10 4 Ordering Information Order Number IST8315 Package Type Packagingg BGA 12 pin Tape and Reel: 3k pieces per reel Marking Information X 1 X 2 X X 3 15 X 1 : Last L number of the year X 2 X 3 : Week number 15: Product P codee For more information on isentek s Magnetic Sensors, please contact us by phone at (China), (China) or ext:110 (Taiwan); via sales@isentek.com or visit us online at The application circuits herein constitute typical usage and interface of o isentek s product. isentek does not warranty or assume liability of customer-designed circuits derived d fromm this description or depiction. isentek reserves the right to make changes too improve reliability, function or design. isentek does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rightss of others. US Patent , B2 Taiwanese Patents I437249, I420128, I and I apply to our magnetic sensor technology described. IST8315 Brief Datasheet, ersion