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preliminary data this is preliminary information on a new product now in deve lopment or undergoing evaluation. details are subject to change without notice. august 2010 doc id 17801 rev 1 1/11 11 MP45DT01 mems audio sensor omni-directional digital microphone features single supply voltage operation low power consumption 120 dbspl acoustic overload point omni-directional sensitivity pdm single-bit output with stereo operation support hlga package 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 MP45DT01 is a compact low-power microphone built up with a sensing element and an ic interface with st ereo operation 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 to design a dedicated circuit able to provide a digital signal to the external world in pdm format. the MP45DT01 has an acoustic overload point of 120 dbspl with 58 db si gnal to noise ratio. the MP45DT01 is availa ble in smd compliant package and it is guaranteed to operate over an extended temperature range from -30 c to +85 c. hlga 4.72 x 3.76 6ld table 1. device summary order code temperature range [c] package packing MP45DT01 -30 to +85 hlga 4.72x3.76 6ld tray MP45DT01tr -30 to +85 hlga 4.72x3.76 6ld tape and reel www.st.com obsolete product(s) - obsolete product(s)
contents MP45DT01 2/11 doc id 17801 rev 1 contents 1 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 acoustic and electrical specificati ons . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 acoustic and electrical characte ristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 l/r channel selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 obsolete product(s) - obsolete product(s)
MP45DT01 pin description doc id 17801 rev 1 3/11 1 pin description figure 1. pin connection table 2. pin description pin # pin name function 1 gnd 0 v supply 2lr left/right channel selection; mic1 lr connected to gnd/vdd and mic2 lr connected to vdd/gnd (see figure 3 ) 3 gnd 0 v supply 4 clk syncronization input clock 5 dout left/right pdm data output 6 vdd power supply ( top view ) ( bo ttom v iew) dout clk vdd lr gnd gnd 1 3 4 5 am07926v1 6 5 4 1 2 3 obsolete product(s) - obsolete product(s)
acoustic and electrical specifications MP45DT01 4/11 doc id 17801 rev 1 2 acoustic and electrical specifications 2.1 acoustic and electrical characteristics characteristics @ vdd = 1.8 v, clock = 2.4 mhz, t = 25 c unless otherwise noted. table 3. electrical characteristics symbo l parameter test condition min. typ. (1) 1. typical specificat ions 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 dbsp l so sensitivity -26 dbfs snr signal to noise ratio a-weighted @1 khz, 1pa 58 db psr power supply rejection guaranteed by design (3) 3. test signal: 217hz 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 cloc k edge to valid output data. guaranteed by design 10 ms to p operating temperature range -30 +85 c table 4. distorsion specifications parameter test condition value distorsion 100 dbspl (50hz - 4khz) <1 % thd + n distorsion 115 dbspl (1khz) <5 % thd + n obsolete product(s) - obsolete product(s)
MP45DT01 acoustic and electrical specifications doc id 17801 rev 1 5/11 2.2 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. exposure to maximum rating conditions for extended periods may affect device reliability. 2.3 frequency response table 5. 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 is a mechanical shock sensitive device, improper handling can cause permanent damages to the part this is an esd sensitive device, improper handling can cause permanent damages to the part table 6. frequency response mask for digital microphones (1) 1. @ t=20c and acoustic stimulus =1pa (94db spl) frequency / hz lower limit upper limit unit 20...100 -5 +5 dbr 1khz 100...8000 -2 +2 dbr 1khz 8000...10000 -5 +5 dbr 1khz obsolete product(s) - obsolete product(s)
functionality MP45DT01 6/11 doc id 17801 rev 1 3 functionality 3.1 l/r channel selection the l/r digital pad lets the user select the data signal pattern as explained in table . 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 obsolete product(s) - obsolete product(s)
MP45DT01 application hints doc id 17801 rev 1 7/11 4 application hints figure 2. MP45DT01 electrical connection figure 3. MP45DT01 electrical connection for stereo configuration power supply decoupling capacitors (100 nf ceramic, 10 f ceramic) should be placed as near as possible to the pin 6 of the device (common design practice). l/r pin must be connected to vdd or gnd (refer to table 2 ). vdd 1 2 3 4 5 6 clk do u t 10 f 10 0nf l/ r to p v ie w codec am07927v1 do u t top vie w codec vd d vd d 10 f 10 0 n f clk mic 1 mic 2 do u t top vie w am0792 8 v1 1 2 3 4 5 6 1 2 3 4 5 6 obsolete product(s) - obsolete product(s)
application hints MP45DT01 8/11 doc id 17801 rev 1 4.1 soldering information the hlga 4.72x3.76 6ld package is compliant with the ecopack ? , rohs and ?green? standard. it is qualified for soldering heat resistance according to jedec j-std-020. land pattern and soldering recommendations are available at www.st.com . obsolete product(s) - obsolete product(s)
MP45DT01 package information doc id 17801 rev 1 9/11 5 package information 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 and product status are available at: www.st.com. ecopack is an st trademark. figure 4. hlga 4.72x3.76 6ld: mechanical data and package dimensions dimensions ref. mm min. typ. max. a1 0.900 1.0 1.10 d1 4.620 4.720 4.820 d2 1.070 1.320 1.570 r1 0.740 0.840 0.940 e1 3.620 3.760 3.820 e2 1.630 1.880 2.130 l1 3.150 3.300 3.450 l2 2.200 2.350 2.500 n1 1.500 1.650 1.800 n2 1.025 1.175 1.325 n3 1.300 1.450 1.600 n4 0.815 0.965 1.115 g1 0.760 0.910 1.160 k 0.050 hlga 4.72x 3 .76 6ld outline and 8113611_c mechanical data obsolete product(s) - obsolete product(s)
revision history MP45DT01 10/11 doc id 17801 rev 1 6 revision history table 8. document revision history date revision changes 06-aug-2010 1 first release. obsolete product(s) - obsolete product(s)
MP45DT01 doc id 17801 rev 1 11/11 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. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. 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. ? 2010 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 obsolete product(s) - obsolete product(s)

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