View PAT9125EL_8940527.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1 PAT9125EL product datasheet optical track ing miniature chip pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL : optical t racking miniature chip general description the PAT9125EL is pixart imagings low power o ptica l t racking miniature chip using pixarts laser - based optical navigation technology enabling digital surface tracking. it int egrates an optical chip with a laser light source in a single miniature package, providing wide depth of field (dof) range on glossy surfaces , and design flexibility into highly space constraint devices. this tracki ng system also does not require code wheel, code strip and any special marking on tracking surface for motion control or tracking purposes. it is recommended for use in hermetic or enclosed mechanical system design and applications. laser power calibration process is not required in the complete system; it was pre - calibrated at chip level which helps to facilitate high volume assembly. key features ? miniature reflowable smt package with built - in vcsel laser light source in a si ngle package ? wide dof range o n glossy surfaces, e.g. stainless steel (sts) ? no lens is needed ? compliance to iec/en 60825 - 1 eye safety ? class 1 laser power output level ? on - chip laser fault detection circuitry ? support i 2 c or 3 - wire spi or interface ? programmable resolution up to 1,275 cpi (on flat sts ) ? motion detection interrupt output ? efficient low power management with programmable sleep modes & downshift time ? internal oscillator C no external clock input needed applications ? suitable for space - constraint and battery - powered wireless devices ? devices that requires tracking on surfaces with wide dof working range ? devices that requi re tracking on small diameter of shaft and suitable for wearable and portable devices key parameter s parameter value supply voltage vdd : 2 connection types type1 2 .1 ~ 3. 6 v type2 1.7 ~ 1.9v vld : 2.7 ~ 3. 6 v control interface i 2 c or 3 - w ire spi distance to tracking surface ( dof ) 1 ~ 30mm ( o n sts surface ) m ax. tracking speed o n flat sts ? 30 ips @ distance R ? 10 ips @ distance 1 ~ 3mm o n 1.0mm diameter sts shaft ? 900 rpm @ distance R ? 300 rpm @ distance 1~ 3mm max resolution ~ 1 , 275 cpi (on flat sts ) or ~ 630 counts/rev (on 1.0mm diameter sts shaft at 1.0mm distance ) operating current ( average @ vdd = vld = 3.3v ) run : 0.7 ma sleep1 /2 : 25 a / 10ua power down : 5 a light source vcsel laser 850 nm package size lw h 3.5 x 3.2 x 1.0 mm ordering information part number interface package type PAT9125EL - tki t i 2 c lga 8 - pin PAT9125EL - tkm t spi lga 8 - pin for any additional inquiries, please contact us at http://www.pixart.com/contact.asp
2 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip contents introduction ................................ ................................ ................................ ................................ ................................ . 3 1.1 overview ................................ ................................ ................................ ................................ ................................ . 3 1.2 signal description ................................ ................................ ................................ ................................ .................... 4 1.3 potential tracking mechanisms ................................ ................................ ................................ ............................... 5 1.4 terminologies ................................ ................................ ................................ ................................ .......................... 6 operating specifications ................................ ................................ ................................ ................................ .............. 7 2.1 absolute maximum ratings ................................ ................................ ................................ ................................ ..... 7 2.2 recommended operating conditions ................................ ................................ ................................ ..................... 7 2.3 dc characteristics ................................ ................................ ................................ ................................ .................... 8 mechanical specifications ................................ ................................ ................................ ................................ ............ 9 3.1 mechanical dimension ................................ ................................ ................................ ................................ ............ 9 reference schematics ................................ ................................ ................................ ................................ ................ 10 4.1 schematics for i 2 c interface (PAT9125EL - tkit) ................................ ................................ ................................ ..... 10 4.1.1 high voltage segment (vdd : 2.1v ~ 3.6v) ................................ ................................ ................................ ...... 10 4.1.2 l ow voltage segment (vdd : 1.7v ~ 1.9v) ................................ ................................ ................................ ....... 10 4.2 schematics for spi interface (PAT9125EL - tkmt) ................................ ................................ ................................ .. 11 4.2.1 high voltage segment (vdd : 2.1v ~ 3.6v) ................................ ................................ ................................ ...... 11 4.2.2 low voltage segment (vdd : 1.7v ~ 1.9v) ................................ ................................ ................................ ....... 11 reg isters list ................................ ................................ ................................ ................................ .............................. 12 document revision history ................................ ................................ ................................ ................................ .................... 13
3 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip introduction 1.1 overview PAT9125EL is a high performance and an ultralow power cmo s - processed optical navigation chip with the integrated digital image pro cess algorithm/ circuits an d a vcsel laser as the light so u r ce . it is based on pixarts optical navigation technology of laser which measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the speed, the direction and the magnitude of motion. the displacement x and y information a re available in registers. a host controller can read and translate the displacement x and y information from the spi or i 2 c serial interface. note: throughout this document PAT9125EL is referred to as the chip . figure 1 . functional block diagram control registers sclk / scl sdio / sda vss vdda vdd motion ncs / id _ sel vld ( chip power input ) ( 1 . 8 v regulator output ) image processing spi slave or i 2 c slave motion detection power saving management laser driver image array ( laser power input ) laser single fault detection voltage regulator and power control light source
4 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip 1.2 signal description figure 2 . pin configuration table 1 . signal pins description pin no. signal name type description spi i 2 c 1 vld vld pwr anode of the vcsel laser, voltage range: 2.7v ~ 3.3v 2 vdda vdda pwr vdd is the main power supply for ic circuits high voltage segment (vdd: 2.1v ~ 3.6v): vdda is 1.8v regulator output and should connect a 4.7uf capacitor to ground low voltage segment (vdd: 1.7v ~ 2.1v): vdda should connect to vdd directly 3 vdd vdd pwr 4 vss vss gnd chip ground 5 sclk scl in sclk : clock input for spi interface scl : clock input for i 2 c interface 6 sdio sda i/o sdio : bi - directional i/o for spi interface sda : bi - directional i/o for i 2 c interface 7 motion motion out motion detection output (active low) 8 ncs id_sel in ncs : chip select for 3 - wire spi interface (active low) id_sel : slave id (7 - bit) selection for i 2 c interface high = 0x73, low=0x75, nc = 0x79 9 test test nc this pin is l ocated on the back of the chip and is for pixart tes ting purpose . please do not connect it to any part of the pcb. please refer to figure 9 . + y + x
5 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip 1.3 potential tracking mechanisms figure 3 . tracking on a moving surface figure 4 . tracking on the side of a rotational shaft figure 5 . tracking on the end of a rotational shaft figure 6 . tracking on a disk edge figure 7 . tracking on a rotational bezel
6 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip 1.4 terminologies term description ack ackno w ledge bit of i 2 c bus cpi counts per inch dof depth of field fps frame s per second i 2 c inter - integrated circuit ips inches per second ld laser diode lga land grid array lop laser output power , unit: uw (micro - watt) na not - a cknowledge bit of i 2 c bus rpm revolution s per minute spi serial peripheral interface sts stainless steel vcsel vertic al - cavity surface - emitting laser
7 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip operating specifications 2.1 absolute maximum ratings table 2 . absolute maximum ratings parameters symbol min. max. unit notes storage temperature t stg - 40 85 c power supply voltage v dc - 0.3 3.9 v signal input voltage v in - 0.3 v dc v for all input i/o lead solder temp t sol - 260 c non - condensing, non - biased esd v hbm - 2 kv all pins, human body m odel mil 883 method 3015 notes: 1. at room temperature. 2. maximum ratings are those values beyond which damage to the device may occur. 3. exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. functional operation under absolute maximum - rated conditions is not im plied. 4. functional operation should be restricted to the recommended operating conditions. 2.2 recommended operating conditions table 3 . recommended operating conditions description symbol min. typ. max. unit notes operating temperature t a - 20 - 60 c power supply voltage vdd 2.1 - 3. 6 v for chip operated in h igh voltage s egment 1.7 1.8 1.9 v for chip operated in low voltage s egment vld 2.7 3.0 3. 6 v for laser power supply noise v npp - - 100 m v peak to peak voltage within 10khz C 80 mhz distance to tracking surface (dof) z 1 3 0 mm on sts surface (refer to notes below) tracking speed v sp - - 30 ips based on flat sts with distance R 3mm 10 ips b ased on flat sts with distance 1~3mm 900 r pm based on 1.0mm diameter sts shaft with distance R 3mm 300 rpm based on 1.0mm diameter sts shaft with distance 1 ~3mm notes: 1. pixart does not guarantee the performance if the operating temperature is beyond the specified limit. 2. when the distance to tracking surface is < 3mm, the reported cpi resolution could be lower than the cpi value at R 3mm . please refer to figure 8 below.
8 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip figure 8 . cpi vs speed @different distance 2.3 dc characteristics table 4 . dc electrical specifications parameters symbol min. typ. max. unit condition s run mode c urrent i run - 0.7 - ma tracking s peed dependent @vdd = v ld= 3.3v on sts sleep 1 mode current i slp1 - 25 - a based on 32ms sampling period @vdd= v ld= 3.3v on sts sleep 2 mode current i slp 2 - 10 a based on 128ms sampling period @vdd= v ld= 3.3v on sts power down current i pd - 5 1 0 a @vdd = v ld =3.3v input voltage high v ih vdd*0.7 - - v for ncs, sclk, sdio, motion pins input v oltage low v il - - vdd*0.3 v output voltage high v oh vdd - 0.4 - - v output voltage low v ol - - 0.4 v notes: all the parameters are tested under operating conditions: t a = 25c
9 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip mechanical specifications 3.1 mechanical dimension figure 9 . package outline diagram
10 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip reference schematic s 4.1 schematics for i 2 c interface (PAT9125EL - tkit) the chip supports standard i 2 c interface and the scl clock speed is up to 1mhz. three different slave ids can be selected from the id_sel pin ( high = 0x73, low=0x75, nc = 0x79). notice that 5k of r1 and r2 (scl/sda bus pull - high resistors) is just for reference and the resistance might have to be adjus ted according to the overall i 2 c bus loading of users whole system. 4.1.1 high voltage segment (vdd : 2.1v ~ 3.6 v) figure 10 . schematics for high voltage segment (i 2 c interface) 4.1.2 low voltage segment (vdd : 1.7v ~ 1.9v) figure 11 . schematics for low voltage segment (i 2 c interface) vld vdda vdd vss id _ sel motion scl sda pat 9125 el - tkit ( top view ) host controller vdd ( 2 . 1 v ~ 3 . 6 v ) 4 . 7 uf int scl vddio vld ( 2 . 7 v ~ 3 . 6 v ) sda 10 uf 0 . 1 uf 10 uf 0 . 1 uf slave id = 0 x 75 ( 7 - bit ) vdd vdd r 1 = 5 k r 2 = 5 k vld vdda vdd vss id _ sel motion scl sda pat 9125 el - tkit ( top view ) host controller vdd ( 1 . 7 v ~ 1 . 9 v ) int scl vddio vld ( 2 . 7 v ~ 3 . 6 v ) sda 10 uf 0 . 1 uf 10 uf 0 . 1 uf slave id = 0 x 75 ( 7 - bit ) vdd vdd 5 k 5 k
11 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip 4.2 schematics for spi interface (PAT9125EL - tkmt) the chip only supports simplified 3 - wire spi slave mode, while some host controllers only support standard 4 - wire spi master mode. in this case, users can connect t he host controller to the chip using the method shown below to communicate each other. notice that 3 .3k for r1 is just for reference and the resistance might have to be modified according to different i/o capability of different host controllers. 4.2.1 high voltage segment (vdd : 2.1v ~ 3. 6 v) figure 12 . schematics for high voltage segment (spi interface) 4.2.2 low voltage segment (vdd : 1.7v ~ 1.9v) figure 13 . schematics for low voltage segment (spi interface) vld vdda vdd vss ncs motion sclk sdio pat 9125 el - tkmt ( top view ) host controller vdd ( 2 . 1 v ~ 3 . 6 v ) 4 . 7 uf int ncs sclk vddio vld ( 2 . 7 v ~ 3 . 6 v ) miso mosi r 1 = 3 . 3 k 10 uf 0 . 1 uf 10 uf 0 . 1 uf vld vdda vdd vss ncs motion sclk sdio pat 9125 el - tkmt ( top view ) host controller vdd ( 1 . 7 ~ 1 . 9 v ) int ncs sclk vddio vld ( 2 . 7 ~ 3 . 6 v ) miso mosi r 1 = 3 . 3 k 10 uf 0 . 1 uf 10 uf 0 . 1 uf
12 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip registers list address register name access reset brief description 0x00 product_id1 ro 0x31 product identifier [11:4] 0x01 product_id2 ro 0x91 upper 4 bits for product identifier, pid [3:0] lower 4 bits for product version, vid [3:0] 0x02 motion_status ro - motion status information 0x03 delta_x _lo ro - 8 - bit 2 s c omplement number for x - movement data in 8 - bit movement data format x - movement = delta_x_lo[7:0] 0x04 delta_y _lo ro - 8 - bit 2s complement n umber for y - movement data in 8 - bit movement data format y - movement = delta_y_lo[7:0] 0x05 operation_mode r/w 0xa0 operation mode selection 0x06 configuration r/w 0x17 software power down and reset 0x09 write_protect r/w 0x00 write protect to avoid mis sed - writing registers 0x0a sleep1 r/w 0x77 sleep1 configuration 0x0b sleep2 r/w 0x10 sleep2 configuration 0x0d res _x r/w 0x14 cpi resolution setting for x axis 0x0e res _y r/w 0x14 cpi resolution setting for y axis 0x12 delta_xy_hi ro - high nibble of x - movement and y - movement for 12 - bit 2 s complement data format. x - movement = { delta_xy_hi[7:4], delta_x_lo[7:0]} y - movement = {delta_xy_hi[3:0], delta_y_lo[7:0]} 0x14 shutter ro - index of laser shutter time 0x17 frame_avg ro - average brightness of a frame 0x19 orientation r/w 0x04 c hip orientation selection
13 pixart imaging inc. pixart imaging inc. http://www.pixart.com all rights reserved. any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permiss ion. version 1. 2 | 3 1 may 2017 | 21002 a en PAT9125EL product datasheet optical track ing miniature chip document revision history revision number date description 1.1 05 apr 2017 based on ds v1.1 1.2 3 1 may 2017 based on ds v1.1 1. widened the spec. of vdd from 2.1v~3.3v to 2.1v~3.6v 2. widened the spec. of vl d from 2.7 v~3.3v to 2. 7 v~3.6v 3. added laser class 1 product logo

▲Up To Search▲

Price & Availability of PAT9125EL

	To Download PAT9125EL Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .