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this is information on a product in full production. june 2014 docid018658 rev 7 1/15 MP45DT02 mems audio sensor omnidire ctional digital microphone datasheet - production data features ? single supply voltage ? low power consumption ? 120 dbspl acoustic overload point ? omnidirectional sensitivity ? pdm single-bit output with option for stereo configuration ? hlga package (smd-compliant) plastic or metal ? ecopack ? , rohs, and ?green? compliant applications ? mobile terminals ? laptop and notebook computers ? portable media players ? voip ? speech recognition ? a/v elearning devices ? gaming and virtual reality input devices ? digital still and video cameras ? antitheft systems description the MP45DT02 is a compact, low-power, top- port, omnidirectional, digital mems microphone. the MP45DT02 is built with a sensing element and an ic interface with stereo capability. the sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process to produce audio sensors. the ic interface is manufactured using a cmos process that allows designing a dedicated circuit able to provide a digital signal externally in pdm format. the MP45DT02 has an acoustic overload point of 120 dbspl with a best on the market 61 db signal-to-noise ratio and -26 db sensitivity. the MP45DT02 is available in an smd-compliant package metal (m) or plastic and is guaranteed to operate over an extended temperature range from -30 c to +85 c. the MP45DT02?s digital output and package size (1.25 mm thick) make this device the best solution for laptop and portable computing applications. hlga (4.72 x 3.76 mm) 6ld table 1. device summary order code temperature range [c] package packing MP45DT02 -30 to +85 hlga 4.72 x 3.76 6ld tray MP45DT02tr -30 to +85 hlga 4.72 x 3.76 6ld tape and reel MP45DT02tr-m -30 to +85 hlga 4.72 x 3.76 6ld tape and reel www.st.com
contents MP45DT02 2/15 docid018658 rev 7 contents 1 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 acoustic and electrical specificat ions . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 acoustic and electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 l/r channel selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 application recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
docid018658 rev 7 3/15 MP45DT02 pin description 15 1 pin description figure 1. pin connections table 2. pin description pin n pin name function 1 gnd 0 v supply 2lr left/right channel selection; mic1 lr is connected to gnd or vdd and mic2 lr is connected to vdd or gnd (see figure 5 ) 3 gnd 0 v supply 4 clk synchronization input clock 5 dout left/right pdm data output 6 vdd power supply
acoustic and electrical specifications MP45DT02 4/15 docid018658 rev 7 2 acoustic and electrical specifications 2.1 acoustic and elect rical characteristics the values listed in the table below are specified for vdd = 1.8 v, clock = 2.4 mhz, t = 25 c, unless otherwise noted. table 3. acoustic and electrical characteristics symbol parameter test condition min. typ. (1) 1. typical specifications are not guaranteed. max. unit vdd supply voltage 1.64 1.8 3.6 v idd current consumption in normal mode no load on data line 0.65 ma iddpdn current consumption in power-down mode (2) 2. input clock in static mode. 20 a scc short-circuit current 1 10 ma aop acoustic overload point 120 dbspl so sensitivity -29 -26 -23 dbfs snr signal-to-noise ratio a-weighted @1 khz, 1pa 61 db psr power supply rejection guaranteed by design (3) 3. test signal: 217 hz square wave, 100 mvpp on vdd pin. -70 dbfs clock input clock frequency (4) 4. duty cycle: min = 40% max = 60%. 1 2.4 3.25 mhz twk wake-up time (5) 5. time from the first clock edge to valid output data. guaranteed by design 10 ms to p operating temperature range -30 +85 c v iol low level logic input/output voltage i out = 1 ma -0.3 0.35xvdd v v ioh high level logic input/output voltage i out = 1 ma 0.65xvdd vdd+0.3 v table 4. distortion specifications parameter test condition value distortion 100 dbspl (50 hz - 4 khz) < 1% thd + n distortion 115 dbspl (1 khz) < 5% thd + n
docid018658 rev 7 5/15 MP45DT02 acoustic and electrical specifications 15 2.2 timing characteristics figure 2. timing waveforms table 5. timing characteristics parameter description min max unit f clk clock frequency for normal mode 1 3.25 mhz f pd clock frequency for power-down mode 0.23 mhz t clk clock period for normal mode 308 1000 ns t r,en data enabled on data line, l/r pin = 1 30 (1) 1. from design simulations ns t r,dis data disabled on data line, l/r pin = 1 16 (1) ns t l,en data enabled on data line, l/r pin = 0 30 (1) ns t l,dis data disabled on data line, l/r pin = 0 16 (1) ns high z high z high z high z t l,en r,dis r,en t l,dis t t t clk am045165v1 clk pdm r pdm l
acoustic and electrical specifications MP45DT02 6/15 docid018658 rev 7 2.3 frequency response figure 3. typical frequency response normalized at 1 khz
docid018658 rev 7 7/15 MP45DT02 sensing element 15 3 sensing element the sensing element shall mean the acoustic sensor consisting of a conductive movable plate and a fixed plate placed in a tiny silic on chip. this sensor transduces the sound pressure into the changes of coupled capacity between those two plates. omron corporation supplies this element for stmicroelectronics.
absolute maximum ratings MP45DT02 8/15 docid018658 rev 7 4 absolute maximum ratings stresses above those listed as ?absolute ma ximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device under these conditions is not implied. ex posure to maximum rating conditions for extended periods may affect device reliability. table 6. absolute maximum ratings symbol ratings maximum value unit vdd supply voltage -0.3 to 6 v vin input voltage on any control pin -0.3 to vdd +0.3 v t stg storage temperature range -40 to +125 c esd electrostatic discharge protection 2 (hbm) kv this device is sensitive to mechanical shock, improper handling can cause permanent damage to the part. this device is esd-sensitive, improper han dling can cause permanent damage to the part.
docid018658 rev 7 9/15 MP45DT02 functionality 15 5 functionality 5.1 l/r channel selection the l/r digital pad lets the user select the dout signal pattern as explained in table 7 . the l/r pin must be connected to vdd or gnd. table 7. l/r channel selection l/r clk low clk high gnd data valid high impedence vdd high impedence data valid
application recommendations MP45DT02 10/15 docid018658 rev 7 6 application recommendations figure 4. MP45DT02 electrical connections figure 5. MP45DT02 electrical connections for stereo configuration power supply decoupling capacitors (100 nf ceramic, 10 f ceramic) should be placed as near as possible to pin 6 of th e device (common design practice). the l/r pin must be connected to vdd or gnd (refer to table 7 ). vdd 1 2 3 4 5 6 clk dout 10 f 10 0 nf l/ r to p v ie w codec am07927v1 dou t top vie w codec vd d vd d 1 0 f 10 0 n f clk mic 1 mic 2 dout top vie w am07928v1 1 2 3 4 5 6 1 2 3 4 5 6
docid018658 rev 7 11/15 MP45DT02 package mechanical data 15 7 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions a nd product status are available at: www.st.com . ecopack ? is an st trademark. soldering information the hlga (4.72 x 3.76 x 1.25) mm package is also compliant with the rohs and ?green? standards and is qualified for sold ering heat resistance acco rding to jedec j-std-020. landing pattern and soldering recommendations are available at www.st.com . figure 6. recommended soldering profile limits table 8. recommended soldering profile limits description parameter pb free average ramp rate t l to t p 3 c/sec max preheat minimum temperature maximum temperature time (t smin to t smax ) t smin t smax t s 150 c 200 c 60 sec to 120 sec ramp-up rate t smax to t l time maintained above liquidus temperature liquidus temperature t l t l 60 sec to 150 sec 217 c peak temperature t p 260 c max time within 5 c of actual peak temperature 20 sec to 40 sec ramp-down rate 6 c/sec max time 25 c (t25 c) to peak temperature 8 minutes max t25c to peak ramp-down ramp-up t s preheat t l t p critical zone t l to t p t smax t smin time t p t l temperature 30 60 90 120 150 180 210 240 270 300 330 360 390 am045166v1
package mechanical data MP45DT02 12/15 docid018658 rev 7 figure 7. hlga (4.72 x 3.76 mm) 6-lead package outline note: the mems microphone metal cap can exhibit some level of variation in color when the device is subjected to a thermal process.
docid018658 rev 7 13/15 MP45DT02 package mechanical data 15 figure 8. hlga (4.72 x 3.76 mm9 6-lead package outline d 1 e1 d 2 e2 a1 7 * g 1 pin 1 indicator l2 n2 n4 n 3 l 1 n 1 d e kd ke k k // kc c r 1 8287552_a table 9. hlga (4.72 x 3.76 mm) 6-lead package dimensions symbol mm. min. typ. max. a1 1.125 1.250 1.375 d1 4.670 4.720 4.770 d2 1.320 r1 0.750 0.840 0.930 e1 3.710 3.760 3.810 e2 1.880 l1 3.200 3.300 3.400 l2 2.250 2.350 2.450 n1 1.550 1.650 1.750 n2 1.075 1.175 1.275 n3 1.350 1.450 1.550 n4 0.865 0.965 1.065 g1 0.810 0.910 1.010 k0.050
revision history MP45DT02 14/15 docid018658 rev 7 8 revision history table 10. document revision history date revision changes 28-mar-2011 1 initial release 21-oct-2011 2 added max. peak temperature t p to table 8 added min. and max. sensitivity so to table 3 01-mar-2012 3 document status promoted from preliminary to production data updated snr to 61 db ( description and ta ble 3 ) 07-may-2012 4 added v iol , v ioh to table 3: acoustic and electrical characteristics 05-jul-2012 5 added section 3: sensing element 21-mar-2014 6 added new package figure 7: hlga (4.72 x 3.76 mm) 6-lead package outline 17-jun-2014 7 updated figure 3 on page 6
docid018658 rev 7 15/15 MP45DT02 15 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. st products are not designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems wi th product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ?automotive, automotive safety or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2014 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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