View AK8963_7095252.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

[ AK8963 ] shortdatasheet - e - 0 1 - 1 - 2012/ 02 AK8963 3 - axis electronic compass 1. features a 3 - axis electronic compass ic with high sensitive hall sensor technology. best adapted to pedestrian city navigation use for cell phone and other po r table appliance. functio ns: 3- axis magnetometer device suitable for compass application built - in a to d converter for magnetometer data out 14- /16 - bit selectable data out for each 3 axis magnetic components - sensitivity: 0.6 t/lsb typ. (14 - bit) 0.15 t/lsb typ. (1 6- bit) ser ial interface - i 2 c bus interface. standard mode and fast mode compliant with philips i 2 c specification ver.2.1 - 4 - wire spi operation mode s : power - down, single m easurement, continuous measurement, external trigger measurement, self test and fuse rom acc ess. drdy function for measurement data ready magnetic sensor overflow monitor function built - in oscillator for internal clock source power on reset circuit self test function with built - in internal magnetic source operating temperatures: - 30 c to + 85 c operating supply voltage: analog power supply +2.4v to +3.6v digital interface supply +1.65v to analog power supply voltage. current consumption: power - down: 3 a typ. measurement: - average power consumption at 8 hz repetition rate : 280 a typ. package: AK8963c 14 - pin wl - csp (bga): 1.6 mm 1.6 mm 0.5 mm (typ.) AK8963n 16 - pin qfn package: 3.0 mm 3.0 mm 0.75 mm (typ.) = short datasheet =
[ AK8963 ] shortdatasheet - e - 0 1 - 2 - 2012/ 02 2. overview AK8963 is 3 - axis electronic compass ic with high sensitive hall sensor technology. small package of AK8963 incorporates magnetic sensors for detecting terrestrial magnetism in the x - axis, y - axis, and z - axis, a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. self test function is also incorpor ated. from its compact foot print and thin package feature, it is suitable for map heading up purpose in gps - equipped cell phone to realize pedestrian navigation function. AK8963 has the following features: (1) silicon monolithic hall - effect magnetic sensor with magnetic concentrator realizes 3 - axis magnetometer on a silicon chip. analog circuit, digital logic, power block and interface block are also integrated on a chip. (2) w ide dynamic measurement range and high resolution with lower current consumption. out put data resolution: 14- bit ( 0.6 t/lsb) 16- bit (0.15 t/lsb) measurement range: 4900 t average current at 8hz repetition rate : 280 a typ. (3) digital serial interface - i 2 c bus interface to control AK8963 functions and to read out the measured data b y external cpu. a dedicated power supply for i 2 c bus interface can work in low - voltage apply as low as 1.65v. - 4 - wire spi is also supported. a dedicated power supply for spi can work in low - voltage apply as low as 1.65v. (4) drdy pin and register inform to sy stem that measurement is end and set of data in registers are ready to be read. (5) device is worked by on - chip oscillator so no external clock source is necessary. (6) self test function with internal magnetic source to confirm magnetic sensor operation on end pr oducts.
[ AK8963 ] shortdatasheet - e - 0 1 - 3 - 2012/ 02 3. table of contents 1. features ...................................................................................................................................... 1 2. overview ..................................................................................................................................... 2 3. table of con tents ........................................................................................................................ 3 4. circuit configuration .................................................................................................................... 4 4.1. block diagram ...................................................................................................................... 4 4.2. blo ck function ..................................................................................................................... 4 4.3. pin function ......................................................................................................................... 5 5. overall characteristics ................................................................................................................ 6 5 .1. absolute maximum ratings ................................................................................................. 6 5.2. recommended operating conditions ................................................................................. 6 5.3. electrical characteristics ..................................................................................................... 6 5.3.1. dc characteristics ........................................................................................................ 6 5.3.2. ac characteristics ........................................................................................................ 7 5.3.3. analog circuit character istics ...................................................................................... 8 5.3.4. 4 - wire spi ..................................................................................................................... 9 5.3.5. i 2 c bus interface ......................................................................................................... 10 6. func tional explanation ............................................................................................................... 11 6.1. power states ....................................................................................................................... 11 6.2. reset functions .................................................................................................................. 11 6.3. operation modes ............................................................................................................... 12 7. example of recommended external connection ..................................................................... 13 7.1. i 2 c bus interface ................................................................................................................ 13 7.2. 4 - wire spi .......................................................................................................................... 14 8. package .................................................................................................................................... 15 8.1. marking .............................................................................................................................. 15 8.2. pin assignment .................................................................................................................. 15 8.3. outline dimensions ............................................................................................................ 16 8.4. recommended foot print pattern ..................................................................................... 17 9. relationship between the magnetic field and output code .................................................... 18
[ AK8963 ] shortdatasheet - e - 0 1 - 4 - 2012/ 02 4. circuit configuration 4.1. block diagram 3 - axis hall sensor mux sda/si drdy chopper sw he - drive pre - amp integrator & adc interface, logic & register scl/sk vdd voltage reference timing control vid so osc1 csb magnetic source cad0 vss por fuse rom cad1 t st1 trig rsv rstn osc2 4.2. block function block function 3 - axis hall sensor monolithic hall element s . mux multiplexer for selecting hall elements. chopper sw performs chopping. he - drive magnetic sensor drive circuit for constant - current driving of sensor pre - amp fixed - gain differential amplifier used to amplify th e magnetic sensor signal. integrator & adc integrates and amplifies pre - amp output and performs analog - to - digital conversion. osc1 generates an operating clock for sensor measurement. 12 mhz(typ . ) osc2 generates an operating clock for sequencer. 128khz(t yp.) por power on reset circuit. generates reset signal on rising edge of vdd. interface logic & register exchanges data with an external cpu. drdy pin indicates sensor measurement end and data is ready to be read. i 2 c bus interface using two pins, namel y, scl and sda. standard mode and fast mode are supported. the low - voltage specification can be supported by applying 1.65v to the vid pin. 4 - wire spi is also supported by sk, si, so and csb pins. 4 - wire spi works in vid pin voltage down to 1.65v, too. ti ming control generates a timing signal required for internal operation from a clock generated by the osc1. magnetic source generates magnetic field for self test of magnetic sensor. fuse rom fuse for adjustment
[ AK8963 ] shortdatasheet - e - 0 1 - 5 - 2012/ 02 4.3. pin function qfn pin no. wlcsp pin no. pin name i/o power supply system type function 1 a1 drdy o vid cmos data ready output pin. ? h ? active. informs measurement ended and data is ready to be read. 2 a2 csb i vid cmos chip select pin for 4 - wire spi. ?l? active. connect to vid when selecting i 2 c bus interface. 3 a3 scl i vid cmos when the i 2 c bus interface is selected (csb pin is connected to vid) scl: control data clock input pin input: schmidt trigger sk when the 4 - wire spi is selected sk: serial clock input pin 5 a4 sda i/o vid cmos when the i 2 c bus interface is selected (csb pin is connected to vid) sda: control data input/output pin input: schmidt trigger, output: open drain si i when the 4 - wire spi i s selected si: serial data input pin 15 b1 vdd - - power analog power supply pin. 4 b3 rsv o vid cmos reserved. keep this pin electrically non - connected. 6 b4 so o vid cmos when the i 2 c bus interface is selected (csb pin is connected t o vid) hi - z output. keep this pin electrically non - connected. when the 4 - wire spi is selected serial data output pin 13 c1 vss - - power ground pin. 14 c2 tst 1 i vdd cmos test pin. pulled down by 100k internal resister. k eep this pin electrically non- connected or connect to vss . 7 c3 trg i vid cmos external trigger pulse input pin. enabled only in external trigger mode. pulled down by 100k internal resister. when external trigger mode is not in use, keep this pin electrically non - connected or connect to vss. 8 c4 vid - - power digital interface positive power supply pin. 12 d1 cad0 i vdd cmos when the i 2 c bus interface is selected (csb pin is connected to vid) cad0: slave address 0 input pin connect to vss or vdd. when the 4 - wire serial interface is selected connect to vss. 11 d2 cad1 i vdd cmos when the i 2 c bus interface is selected (csb pin is connected to vid) cad1: slave address 1 input pin co nnect to vss or vdd. when the 4 - wire serial interface is selected connect to vss. 10 d4 rstn i vid cmos reset pin. resets registers by setting to ? l ? . connect to vid when not in use.
[ AK8963 ] shortdatasheet - e - 0 1 - 6 - 2012/ 02 5. overall characteristics 5.1. absolute maximum rati ngs v ss =0v parameter symbol min. max. unit power supply voltage ( v dd , v id ) v+ - 0.3 + 4.3 v input voltage vin - 0.3 (v+)+0.3 v input current iin - 10 ma storage temperature tst - 40 + 125 c (note 1) if the device is used in condition s exceeding these value s, the device may be destroyed. normal operation s are not guaranteed in such exceeding condition s. 5.2. recommended operating conditions v ss =0v parameter remark symbol min. typ. max. unit operating temperature ta - 30 + 85 c power supply voltage vdd pin voltage v dd 2. 4 3.0 3.6 v vid pin voltage v id 1. 65 v dd v 5.3. electrical characteristics the following condition s apply unless other wise noted: v dd =2. 4 v to 3.6v, v id =1. 65 v to v dd , temperature range= - 30 c to 85 c 5.3.1. dc characteristics parameter symbol pin condition m in. typ. max. unit high level input voltage 1 vih1 csb rstn trg 70% v id v low level input voltage 1 vil1 30% v id v high level input voltage 2 vih 2 sk/ scl si/ sda 70% v id vid+0.5 v low level input voltage 2 vil 2 - 0.5 3 0% v id v high level input v oltage 3 vih3 cad0 cad1 70%v dd v low level input voltage 3 vil3 30%v dd v input current 1 iin 1 sk/ scl si/ sda csb rstn vin=v ss or v id -10 +10 m a input current 2 iin2 cad0 cad1 vin=vss or vdd - 10 +10 m a input current 3 iin3 trg vin=vid 100 m a input current 4 iin4 tst1 vin=vdd 100 m a hysteresis input voltage (note 2) vhs scl sda v id 3 2v 5%v id v v id <2v 10%v id v high level out put voltage 1 voh1 so drdy ioh 3 - 1 00a 80 % v id v low level out put v oltage 1 vol 1 iol + 1 00a 20%v id v low level out put voltage 2 (note 3) (note 4) vol2 sda iol 3ma v id 3 2v 0.4 v iol 3ma v id <2v 20%v id v current consumption (note 5) idd1 vdd vid power - down mode v dd =v id = 3.0 v 3 10 m a idd2 when magnetic sensor is driven 5 10 ma idd3 self - test mode 9 15 ma idd4 (note 6) 0.1 5 m a (note 2) schmitt trigger input (reference value for design) (note 3) ma ximum load capacitance: 400pf (capacitive load of each bus line applied to the i 2 c bus interface) (note 4) output is open - drain. connect a pull - up resistor externally. (note 5) without any resistance load (note 6) (case1)vdd=on, vid=on, rstn pin = ?l? . (case2)vdd=on, vid=off(0v),rst n pin = ?l? .
[ AK8963 ] shortdatasheet - e - 0 1 - 7 - 2012/ 02 (case3)vdd=off(0v), vid=on . 5.3.2. ac characteristics parameter symbol pin condition min. typ. max. unit power supply rise time (note 7) psup vdd vid period of time that vdd (vid) changes from 0.2v to v d d (vid). (note 8) 50 m s por completion time (note 7) port period of time after psup to power - down mode (note 8) 100 s power supply turn off volt age sdv vdd vid turn off voltage to enable por to restart (note 8) 0.2 v power supply turn on interval (note 7) psint vdd vid period of time that voltage lower than sdv needed to be kept to enabl e por to restart (note 8) 100 s wait time before mode setting twat 100 m s (note 7) reference value for design (note 8) when por circuit detects the rise of vdd /vid voltage, it resets internal circuits and initializes the registers. afte r reset , AK8963 transits to power - down mode. parameter symbol pin condition min. typ. max. unit trigger input effective pulse width ttrigh trg 200 ns trigger input effective frequency (note 9) ttrigf trg 100 hz (note 9) the value when the period of time from the end of the measurement to the next trigger input is 1.3ms. vih ttrigh 0v psint : 100s psup : 50ms port : 100s power down mode powe down mode sdv:0 .2 v vdd/(vid)
[ AK8963 ] shortdatasheet - e - 0 1 - 8 - 2012/ 02 parameter symbol pin condition min. typ. max. unit reset inpu t effective pulse width ( ? l ? ) trstl rst n 5 m s vil trstl 5.3.3. analog circuit characteristics parameter symbol condition min. typ. max. unit measurement data output bit dbit bit = ? 0 ? 14 bit bit = ? 1 ? 16 time for measurement tsm single measurement mode 7. 2 9 ms magn etic sensor sensitivity bse tc=25 c (note 10) 0.57 0.6 0.63 m t / lsb bit = ? 0 ? bit = ? 1 ? 0.1425 0.15 0.1575 magnetic sensor measurement range (note 11) b rg tc=25c (note 10) 491 2 m t magnetic sensor initial offset (note 12) tc=25c bit = ? 0 ? - 500 500 lsb (note 10) value after sensitivity is adjusted using sensitivity fin e adjustment data stored in fuse rom. (note 11) reference value for design (note 12) value of measurement data register on shipment without applying magnetic field on purpose .
[ AK8963 ] shortdatasheet - e - 0 1 - 9 - 2012/ 02 5.3.4. 4 - wire spi 4- wire spi is compli ant with mode 3 parameter symbol condition min. typ. max. unit cs b setup time tcs 50 ns data setup time ts 50 ns data hold time th 50 ns sk high time twh v id 3 2.5v 100 ns 2.5v>v id 3 1.65 v 150 ns sk low time twl v id 3 2.5v 100 ns 2.5v >v id 3 1.65 v 150 ns sk setup time tsd 50 ns sk to so delay time (note 13) tdd 50 ns cs b to so delay time (note 13) tcd 50 ns sk ris e time (note 14) tr 1 00 ns sk fall time (note 14) tf 100 ns csb high time tch 150 ns (note 13) so load capacitance: 20pf (note 14) reference value for design . [ 4- wire spi ] csb sk si tcs s o ts tsd tcd th tdd hi - z hi - z twh twl tch [rise time and fall time] sk tr tf 0.9vid 0.1vid
[ AK8963 ] shortdatasheet - e - 0 1 - 10 - 2012/ 02 5.3.5. i 2 c bus interface csb pin = ? h ? i 2 c bus interface is compliant with standard mode and fast mode. standard/fast mode is selected automatically by fscl. (1) standard mode fscl 100khz symbol parameter min. typ. max. unit fscl scl clock frequency 100 khz thigh scl clock " high " time 4.0 m s tlow scl clock " low " time 4.7 m s tr sda and scl rise time 1.0 m s tf sda and scl fall time 0.3 m s thd:sta start condition hold time 4.0 m s tsu:sta start condition setup time 4.7 m s thd:dat sda hold time (vs. scl falling edge) 0 m s tsu:dat sda setup time (vs. scl rising edge) 250 ns tsu:sto stop condition setup time 4.0 m s tbuf bus free time 4.7 m s (2) fast mode 100khz [ AK8963 ] shortdatasheet - e - 0 1 - 11 - 2012/ 02 6. functional explanation 6.1. power states when vdd and vid are turned on from v dd= off (0v) and v id = off (0v) , all registers in AK8963 are initialized by por circuit and AK8963 transits to power - down mode. all the st ates in the table below can be set, although the transition from state 2 to state 3 and the transition from state 3 to state 2 are prohibited. table 6 . 1 state vdd vid power state 1 off (0v) off (0v) off (0v ). it doesn ? t affect external interface. d igital input pins other than scl and sda pin should be fixed to ? l ? (0v). 2 off (0v) 1.65v to 3.6v off (0v). it doesn ? t affect external interface. 3 2.4v to 3.6v off (0v) off (0v). it doesn ? t affect external in terface. d igital input pins other than scl and sda pin should be fixed to ? l ? (0v). 4 2.4v to 3.6v 1.65v to v dd on 6.2. reset f unctions when the po wer state is on, always keep vid v dd. power - on reset (por) works until v dd reaches to the operation effective voltage (about 1.4v: reference value for design) on power - on sequence. after por is deactivated, all registers are initialized and transits to power down mode. when vdd =2.4 ~ 3. 6v, por circuit and v id monitor circuit are active. when vid=0v, AK8963 is in reset status and it consumes the current of reset state (idd4). AK8963 has four types of reset; (1) power on reset (por) when v dd rise is detected , por circuit operates, and AK8963 is reset. (2) vid monitor when v id is turned off (0v), AK8963 is reset. (3) reset pin (rstn) AK8963 is reset by reset pin. when reset pin is not used, connect to vid. (4) soft reset AK8963 is reset by setting srst bit. when AK8963 is reset, all registers are initializ ed and AK8963 transits to power - down mode.
[ AK8963 ] shortdatasheet - e - 0 1 - 12 - 2012/ 02 6.3. operation modes AK8963 has following seven operation modes: (1) power - down mode ( 2) single measurement mode (3) continuous measurement mode 1 (4) continuous measurement mode 2 (5) external trigger measurement m ode (6) self - test mode (7) fuse rom access mode by setting cntl 1 register mode[ 3 :0] bits, the operation set for each mode is started . a transition from one mode to another is shown below. mode[3:0]=?00 01 ? mode[3:0]=?0000? transits automatically mode[3:0]=?00 10 ? mode[3:0]=?0000? mode[3:0]=?0 110 ? mode[3:0]=?0000? mode[3:0]=?01 00? mode[3:0]=?0000? mode[3:0]=?1000 mode[3:0]=?0000? transits automatically mode[3:0]=?1111 mode[3:0]=?0000? power - down mode continuous measurement mode 2 sensor is measured periodically in 100hz. transits to power - down mode by writing mode[3:0]=?0000? . self - test mode sensor is self - tested and the result is output. transits to power - down mode automatically. single measurement mode sensor is measured for one time and data is output. transits to power - down mode automatically after measurement ended. external trigger measurement mode sensor is measured for one time by external trigger. waits for next trigger after data is output. transits to power - down mode by writing mode[3:0]=?0000? . f use rom access mode turn on the circuit needed to read out fuse rom. transits to power - down mode by writing mode[3:0]=?000 0? . continuous measurement mode 1 sensor is measured periodically in 8hz. transits to power - down mode by writing mode[3:0]=?0000? . figure 6 . 1 operation modes when power is turned on, AK8963 is in power - down mode . when a specified value is set to mode[3:0], AK8963 transits to the specified mode and starts operation. when user wants to change operation mode, transit to powe r - down mode first and then transit to other modes. after power - down mode is set, at least 100 m s(twat) is needed before setting another mode.
[ AK8963 ] shortdatasheet - e - 0 1 - 13 - 2012/ 02 7. example of recommended external connection 7.1. i 2 c bus interface <AK8963c> pins of dot circle should be kept non- connected . <AK8963n> same as AK8963c. AK8963c (top view) interrupt host cpu i 2 c i/f power for i/f vid power 1. 65 v~v dd vdd power 2. 4 v~3.6v 0.1f 0.1f tst2 rstn vid so sda /si trg rsv scl /sk csb tst1 cad0 cad1 vss vdd drdy slave address select cad1 ca d0 address vss vss 0 0 0 1 1 0 0 r/w vss vd d 0 0 0 1 1 0 1 r/w vd d vss 0 0 0 1 1 1 0 r/w v d d v d d 0 0 0 1 1 1 1 r/w gpib 4 3 2 1 d c b a
[ AK8963 ] shortdatasheet - e - 0 1 - 14 - 2012/ 02 7.2. 4 - wire spi <AK8963c> pins of dot circle should be kept non- connected . <AK8963n> same as AK8963c. AK8963c (top view) interrupt host cpu spi i/f power for i/f vid power 1. 65 v~v dd vdd power 2. 4 v~3.6v 0.1f 0.1f tst2 rstn vid so sda / si trg rsv scl / sk csb tst1 cad0 cad1 vss vdd drdy gpib 4 3 2 1 d c b a
[ AK8963 ] shortdatasheet - e - 0 1 - 15 - 2012/ 02 8. package 8.1. marking < AK8963c > product name: 8963 date co de: x 1 x 2 x 3 x 4 x 5 x 1 = id x 2 = year c ode x 3 x 4 = week code x 5 = lot < AK8963n > company logo: akm product name: 8963 date co de: x 1 x 2 x 3 x 4 x 5 x 1 = id x 2 = year code x 3 x 4 = week code x 5 = lot 8.2. pin assignment <AK8963c> 4 3 2 1 d rstn cad1 cad0 c vid trg tst1 vss b so rsv vdd a sda/si scl/sk csb drdy <AK8963n> 14 so AK8963 n < top v iew > 15 trg 16 vid 8 7 rsv 4 scl/sk 3 nc 9 rstn 10 cad0 11 cad1 12 csb 2 6 t st1 drdy 5 vss 13 sda/si vdd nc 1 akm 89 63 x 1 x 2 x 3 x 4 x 5 8963 x 1 x 2 x 3 x 4 x 5
[ AK8963 ] shortdatasheet - e - 0 1 - 16 - 2012/ 02 8.3. outline dimensions <AK8963c> [mm] <AK8963n> [mm] 0.05 c 0.57 max. c 0.40 0.13 0 . 4 1.2 1.2 0. 4 0.24 0.03 4 3 2 1 1.59 0.03 d 1.59 0.03 c b a 1 2 3 4 3 .0 0 0. 05 1 4 8 5 1 2 9 13 16 3 .0 0 0. 05 a b 0.75 0. 05 0.05 c 0. 50 ref. 0 . 25 0. 05 1.8 0.1 0 4 1 1.8 0.1 0 0. 25 ref. 0.35 0.1 0 8 5 13 16 9 12 c 0. 25 0.10 m c a b 16x 0. 45 ref.
[ AK8963 ] shortdatasheet - e - 0 1 - 17 - 2012/ 02 8.4. recommended foot print pattern <AK8963c> [mm] <AK8963n> [mm] 2.25 0.575 0.30 0.50
[ AK8963 ] shortdatasheet - e - 0 1 - 18 - 2012/ 02 9. relationship between the magnetic field and output code the measurement data increases as the mag netic flux density increases in the arrow directions. <AK8963c> <AK8963n> important notice these products and their specifications are subject to change without notice. when you consider any use or application of these produc ts, please make inquiries the sales office of asahi kasei microdevices corporation (akm) or authorized distributors as to current status of the products. akm assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of any information contained herein. any export of these products, or devices or systems containing them, may require an export license or other official approval under the law and regulations of the country of export pertaining to cust oms and tariffs, currency exchange, or strategic materials. akm products are neither intended nor authorized for use as critical components note1) in any safety, life support, or other hazard related device or system note2) , and akm assumes no responsibility for such use, except for the use approved with the express written consent by representative director of akm. as used here: note1) a critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or i ndirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. note2) a hazard related device or system is one designed or intended for life sup port or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failu re to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. it is the responsibility of the buyer or distributor of akm products, who distributes, disposes of, or otherwise places the product with a third party, to notify such third party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold akm harmless from any and all claims arising fro m the use of said product in the absence of such notification . 8963 xxxxx y z x 8963 xxxxx 8963 xxxxx y z x akm 8963 xxxxx y z x akm 8963 xxxxx akm 8963 xxxxx y z x y z x

▲Up To Search▲

Price & Availability of AK8963

	To Download AK8963 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .