MPL015A2 rev 0, 8/2010 freescale semiconductor ? freescale semiconductor, in c., 2010. all rights reserved. pressure miniature i 2 c digital barometer the MPL015A2 is an absolute pressure se nsor with digital output for low cost applications. a miniature 5 x 3 x 1.2 mm lga package ideally suits it for portable electronics and space constrained applic ations. low current consumptions of 5 a during active mode and 0.06 a during shutdown (sleep) mode target battery and other low-power applicatio ns. a wide operating temperature range from -40c to +105c fits deman ding environmental requirements. MPL015A2 employs a mems pressure sensor with a conditioning ic to provide accurate pressure measurement from 50 to 115 kpa. an integrated adc provides digitized temperature and pressure sensor outputs via an i 2 c port. calibration data is stored in internal rom. utilizing raw sensor output, the host microcontroller executes a com pensation algorithm to render compensated absolute pressure . the MPL015A2 pressure sensor?s small form factor, low power capability, precision, and digital outpu t optimize it for barometric measurement applications. features ? digitized pressure and temperature information together with programmed calibration coefficients for host micro use. ? factory calibrated ? 50 kpa to 115 kpa absolute pressure ? 1 kpa accuracy ? 2.375 v to 5.5 v supply ? integrated adc ?i 2 c interface ? monotonic pressure and temperature data outputs ? surface mount rohs compliant package ordering information device name package options case no. # of ports pressure type digital interface none single dual gauge differential absolute MPL015A2t1 tape & reel 2015 ? ? i 2 c pin description pin name function 1 vdd vdd power supply connection. 2 cap external capacitor 3 gnd ground 4 shdn shutdown (sleep): connect to gnd to disable the device. 5 rst reset: drive line low to disable i 2 c communications. 6 nc nc: no connection. 7sda (1) sda: serial data i/o line. 8scl (1) i 2 c serial clock input. 1. use 4.7k pull-up resistors for i 2 c communication. MPL015A2 50 to 115 kpa MPL015A2 5.0 mm x 3.0 mm x 1.2 mm max lga package 1 nc sda vdd cap shdn gnd rst scl 2 3 4 8 7 6 5 pin connections application examples ? barometry (portable and desk-top) ? altimeters ? weather stations ? hard disk-drives (hdd) ? industrial equipment ? health monitoring ? air control systems datasheet.in
MPL015A2 sensors 2 freescale semiconductor pressure maximum ratings voltage (with respect to gnd unless otherwise noted) v dd .............................................................................................................................. - 0.3 v to +5.5 v sclk, cs , d in , d out ................................................................................................. -0.3 v to v dd +0.3 v operating temperature range ................................ .................................................... -40c to +105c storage temperature range........................................................................................ -40c to +125 c overpressure ............................................................................................................... 1000 kpa operating characteristics (v dd = 2.375 v to 5.5 v, t a = -40c to +105c, unless otherwise noted. typical values are at v+ = 3.3 v, t a = +25c. ref parameters symbol conditions min typ max units 1 operating supply voltage v dd 2.375 3.3 5.5 v 2 supply current i dd shutdown (shdn = gnd) @ 25oc ? 0.06 1 a standby ? 3.5 10 a average ? at one measurement per second ? 5 6 a pressure sensor 3 range 50 ? 115 kpa 4 resolution ?0.15?kpa 5 accuracy -20oc to 85oc ? 1 ? kpa 6 accuracy change over temperature ? 0.125 ? kpa/oc 7 power supply rejection typical operating circuit at dc ? 0.1 ? kpa/v 100 mv p-p 217 hz square wave plus 100 mv pseudo random noise with 10 mhz bandwidth. ?0.1?kpa 8 conversion time ( start pressure convert ) tcp time between start convert command and data available in the pressure register ?0.60.7ms temperature sensor 9 range -40 ? 105 oc 10 conversion time (start temperature convert ) tct time between start convert command and data available in the temperature register ?0.60.7ms 11 conversion time (start both convert ) tcb time between start convert command and data available in the pressure and temperature registers ?0.81 ms 12 resolution temperature adc is 472 counts @ 25oc ? -5.35 ? counts/oc i 2 c i/o stages: scl, sda 13 scl clock frequency f scl ? ? 400 khz 14 low level input voltage vil ? ? 0.3v dd v 15 high level input voltage vih 0.7v dd ?? v i 2 c outputs: sda 16 data setup time t su setup time from command receipt to ready to transmit 100 ? ? ns i 2 c addressing MPL015A2 uses 7-bit addressing, does not acknowledge the general call address 0000000. slave address has been set to 0x60 or 11 00000. datasheet.in
MPL015A2 sensors freescale semiconductor 3 pressure figure 1. block diagram compensation the 10-bit compensated pressure output, pcomp, is calculated as follows: pcomp = a0 + (b1 + padc + c12*t adc) * padc + (b2 + tadc) * tadc where: padc is the 10-bit pressure output of the MPL015A2 adc, tadc is the 10-bit temperatur e output of the MPL015A2 adc, a0 is the pressure offset coefficient, b1 is the pressure sensitivity coefficient, c12 is the coefficient for temperature sensitivity coefficient (tcs), b2 is the 1st order temperatur e offset coefficient (tco), ideally, pcomp will produce a value of 0 with an input pressure of 50 kpa and will produce a full-scale value of 1023 with an i nput pressure of 115 kpa. diff amp temp sensor mux adc scl gnd vdd sda temperature pressure coefficient storage addr addr addr addr addr i 2 c interface shdn rst cap diff amp temp sensor mux adc scl gnd vdd sda temperature pressure coefficient storage addr addr addr addr addr addr addr addr i 2 c interface shdn rst cap vdd cap shdn sda rst gnd scl c 1 f 1 f microcontroller 4.7 k 4.7 k datasheet.in
MPL015A2 sensors 4 freescale semiconductor pressure coefficient bit-width specs the table below specifies the initial coefficient bit-width specs for the compensation algorithm. * factory reserves the option to make these values = 0. example binary format definitions: 1. sign = 0, integer bits = 8, fr actional bits = 4 : coeff = s i 7 i 6 i 5 i 4 i 3 i 2 i 1 i 0 . f 3 f 2 f 1 f 0 2. sign = 1, integer bits = 4, fr actional bits = 7 : coeff = s i 3 i 2 i 1 i 0 . f 6 f 5 f 4 f 3 f 2 f 1 f 0 3. sign = 0, integer bits = 0, fractional bits = 6, dec pt zero pad = 2 : coeff = s 0 . 0 0 f 5 f 4 f 3 f 2 f 1 f 0 4. sign = 0, integer bits = 0, fractional bits = 5, dec pt zero pad = 3 : coeff = s 0 . 0 0 0 f 4 f 3 f 2 f 1 f 0 note: negative coefficients (sign = 1) are coded in 2?s complement notation. coefficient address map for coefficients with less than 16 bits, the lower lsbs are zero. fo r example, c14 is 14 bits and is stored into 2 bytes as fol lows: c14 ms byte = c14[10:3] = [c14 b13 , c14 b12 , c14 b11 , c14 b10 , c14 b9 , c14 b8 , c14 b7 , c14 b6 ] c14 ls byte = c14[2: 0] & ?00000? = [c14 b5 , c14 b4 , c14 b3 , c14 b2 , c14 b1 , c14 b0 , 0 , 0] 10-bit output: compensation coefficient specs total coeff. bits a0 b1 b2 c12 total bits 16 16 16 14 62 sign bits 1 1 1 1 integer bits 12 2 1 0 fractional bits 4 13 14 13 dec pt zero pad ? ? ? 9 address coefficient $04 a0 ms byte $05 a0 ls byte $06 b1 ms byte $07 b1 ls byte $08 b2 ms byte $09 b2 ls byte $0a c12 ms byte $0b c12 ls byte datasheet.in
MPL015A2 sensors freescale semiconductor 5 pressure solder recommendations 1. use sac solder alloy (i.e., sn-ag-cu) with a meltin g point of about 217c. it is recommended to use sac305 (i.e., sn-3.0 wt.% ag-0.5 wt.% cu). 2. reflow ? ramp up rate: 2 to 3 c/s. ? preheat flat (soak): 110 to 130s. ? reflow peak temperature: 250c to 260c (depends on exact sac alloy composition). ? time above 217c: 40 to 90s (depends on board type, thermal mass of the board/ quantities in the reflow). ? ramp down: 5 to 6 c/s. ? using an inert reflow environment (with o2 level about 5 to 15 ppm). note: the stress level and signal offset of the device also depend s on the board type, board core material, board thickness and metal finishing of the board. handling recommendations it is recommended to handle the mpl015a pressure sensor with a vacuum pick and place tool. sharp objects utilized to move the mpl015a pressure sensor increase the possibility of da mage via a foreign object/tool into the small exposed port. the sensor die is sensitive to light exposure. direct light exposure through the po rt hole can lead to varied accuracy of press ure measurement. avoid such exposure to the port during normal operation. datasheet.in
MPL015A2 sensors 6 freescale semiconductor pressure package dimensions case 2015-02 issue a lga package datasheet.in
MPL015A2 sensors freescale semiconductor 7 pressure package dimensions case 2015-02 issue a lga package datasheet.in
MPL015A2 rev. 0 8/2010 information in this document is provided solely to enable system and software implementers to use freescale semicondu ctor products. there are no express or implied copyright licenses gr anted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. freescale semiconductor reserv es the right to make changes without further notice to any products herein. freescale semiconduct or makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does freescale semiconductor assume any liability arising out of the application or use of any product or circuit, and specif ically disclaims any and all liability, including without limitation consequential or incidental da mages. ?typical? parameters that may be provided in freescale semiconductor data sh eets and/or specifications can and do vary in different applications and actual perform ance may vary over time. all operating parameters, including ?typicals?, must be validated for each customer application by customer?s technical experts. freescale semiconductor does not convey any license under its patent rights nor the rights of others. freescale semi conductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the freescale semiconductor product could create a situation where personal injury or death may occur. should buyer purchase or use freescale semiconductor products for any such unintended or unauthorized application, buyer shall indemnify and hold freescale semiconductor and its officers, employees, subsidiaries, aff iliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that freescale semiconductor was negligent regarding the design or manufacture of the part. freescale and the freescale logo are tra demarks of freescale semiconductor, inc., reg. u.s. pat. & tm. off. all other product or service names are the property of their respective owners. ? freescale semiconductor, inc. 2010. all rights reserved. how to reach us: home page: www.freescale.com web support: http://www.freescale.com/support usa/europe or locations not listed: freescale semiconductor, inc. technical information center, el516 2100 east elliot road tempe, arizona 85284 1-800-521-6274 or +1-480-768-2130 www.freescale.com/support europe, middle east, and africa: freescale halbleiter deutschland gmbh technical information center schatzbogen 7 81829 muenchen, germany +44 1296 380 456 (english) +46 8 52200080 (english) +49 89 92103 559 (german) +33 1 69 35 48 48 (french) www.freescale.com/support japan: freescale semiconductor japan ltd. headquarters arco tower 15f 1-8-1, shimo-meguro, meguro-ku, tokyo 153-0064 japan 0120 191014 or +81 3 5437 9125 support.japan@freescale.com asia/pacific: freescale semiconductor china ltd. exchange building 23f no. 118 jianguo road chaoyang district beijing 100022 china +86 010 5879 8000 support.asia@freescale.com for literature requests only: freescale semiconductor literature distribution center 1-800-441-2447 or +1-303-675-2140 fax: +1-303-675-2150 ldcforfreescalesemiconductor@hibbertgroup.com datasheet.in
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