MP34DT05TR

MP34DT05 MEMS audio sensor omnidirectional digital microphone Datasheet - production data • • Digital still and video cameras Antitheft systems Description The MP34DT05 is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface. The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated 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. Features • • • • • • • • Single supply voltage Low power consumption AOP = 122.5 dBSPL 64 dB signal-to-noise ratio Omnidirectional sensitivity –26 dBFS ± 3 dB sensitivity PDM output HCLGA package − Top-port design − SMD-compliant − EMI-shielded − ECOPACK®, RoHS, and “Green” compliant The MP34DT05 is a low-distortion digital microphone with a 64 dB signal-to-noise ratio and –26 dBFS ± 3 dB sensitivity. The MP34DT05 is available in a top-port, SMDcompliant, EMI-shielded package and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C. Table 1: Device summary Order codes Temp. range [°C] Package Packing MP34DT05 -40 to +85 HCLGA (3 x 4 x 1 mm) 4LD Tray MP34DT05TR -40 to +85 Applications • • • • • • • Mobile terminals Laptop and notebook computers Portable media players VoIP Speech recognition A/V eLearning devices Gaming and virtual reality input devices November 2016 DocID029902 Rev 1 This is information on a product in full production. HCLGA (3 x 4 x 1 mm) 4LD Tape and reel 1/21 www.st.com Contents MP34DT05 Contents 1 Pin description ................................................................................ 5 2 Acoustic and electrical specifications ........................................... 6 2.1 Acoustic and electrical characteristics............................................... 6 2.2 Timing characteristics ....................................................................... 7 2.3 Frequency response ......................................................................... 8 3 Application recommendations ....................................................... 9 4 5 Carrier tape mechanical specifications ....................................... 11 Process recommendations ........................................................... 12 6 Sensing element ............................................................................ 14 7 Absolute maximum ratings........................................................... 15 8 Functionality .................................................................................. 16 8.1 9 10 2/21 L/R channel selection ...................................................................... 16 Package information ..................................................................... 17 9.1 Soldering information ...................................................................... 17 9.2 HCLGA package information........................................................... 18 Revision history ............................................................................ 20 DocID029902 Rev 1 MP34DT05 List of tables List of tables Table 1: Device summary ........................................................................................................................... 1 Table 2: Pin description .............................................................................................................................. 5 Table 3: Acoustic and electrical characteristics .......................................................................................... 6 Table 4: Distortion specifications @ 1 kHz ................................................................................................. 6 Table 5: Timing characteristics ................................................................................................................... 7 Table 6: Absolute maximum ratings ......................................................................................................... 15 Table 7: L/R channel selection ................................................................................................................. 16 Table 8: Recommended soldering profile limits ........................................................................................ 17 Table 9: Document revision history .......................................................................................................... 20 DocID029902 Rev 1 3/21 List of figures MP34DT05 List of figures Figure 1: Pin connections ........................................................................................................................... 5 Figure 2: Timing waveforms ....................................................................................................................... 7 Figure 3: Typical frequency response normalized to 1 kHz........................................................................ 8 Figure 4: MP34DT05 electrical connections (top view) .............................................................................. 9 Figure 5: MP34DT05 electrical connections for stereo configuration (top view) ...................................... 10 Figure 6: Carrier tape without microphone (top view) ............................................................................... 11 Figure 7: Carrier tape with microphone (top view) .................................................................................... 11 Figure 8: Recommended picking area ...................................................................................................... 12 Figure 9: Recommended picker design .................................................................................................... 13 Figure 10: Recommended soldering profile limits .................................................................................... 17 Figure 11: HCLGA (3 x 4 x 1 mm) 4-lead package outline and mechanical data .................................... 18 Figure 12: Land pattern............................................................................................................................. 19 4/21 DocID029902 Rev 1 MP34DT05 1 Pin description Pin description Figure 1: Pin connections LR 2 3 CLK Vdd 1 4 DOU T 5 GND (BOT TOM VIEW) Table 2: Pin description Pin # Pin name Function 1 Vdd Power supply 2 LR Left/Right channel selection 3 CLK Synchronization input clock 4 DOUT Left/Right PDM data output 5 (ground ring) GND 0 V supply DocID029902 Rev 1 5/21 Acoustic and electrical specifications MP34DT05 2 Acoustic and electrical specifications 2.1 Acoustic and electrical 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 Vdd Supply voltage Idd Current consumption in normal mode IddPdn Short-circuit current AOP Acoustic overload point So Max. Unit 1.6 1.8 3.6 V 650 (2) 1 -29 A-weighted @1 kHz, 94 dB SPL SNR Signal-to-noise ratio PSR Power supply rejection Input clock frequency µA 5 µA 10 mA 122.5 Sensitivity fCLK Typ. (1) Mean value Current consumption in power-down mode Scc Min. -26 dBFS dB(A) -72 dBFS 3.25 MHz 10 ms -40 +85 °C V 1.2 (4) -23 64 100 mVpp sine 1 kHz (3) dBSPL 2.4 Ton Turn-on time Top Operating temperature range VIOL Low-level logic input/output voltage Iout = 1 mA -0.3 0.35xVdd VIOH High-level logic input/output voltage Iout = 1 mA 0.65xVdd Vdd+0.3 V 100 pF CLOAD Guaranteed by design Capacitive load Notes: (1)Typical specifications are not guaranteed. (2)Input clock in static mode. (3)Duty cycle: min = 40% max = 60%. (4)Time from the first clock edge to valid output data. Table 4: Distortion specifications @ 1 kHz Parameter Test condition Typical value (1) Distortion 94 dBSPL 0.2% THD + N Distortion 110 dBSPL 0.7% THD + N Distortion 120 dBSP 6% THD + N Notes: (1)Typical 6/21 specifications are not guaranteed. DocID029902 Rev 1 MP34DT05 2.2 Acoustic and electrical specifications Timing characteristics Table 5: Timing characteristics Parameter Description fCLK Clock frequency for normal mode fPD Clock frequency for power-down mode Min. Max. Unit 1.2 3.25 MHz 0.23 MHz TCLK Clock period for normal mode 308 1000 ns TR,EN Data enabled on DATA line, L/R pin = 1 70 90 ns TR,DIS Data disabled on DATA line, L/R pin = 1 4.3 5.3 ns TL,EN Data enabled on DATA line, L/R pin = 0 64 87 ns TL,DIS Data disabled on DATA line, L/R pin = 0 3.5 4.3 ns Figure 2: Timing waveforms TCLK CLK TL,DIS TR,EN TR,DIS High Z PDM R High Z TL,EN PDM L High Z DocID029902 Rev 1 High Z 7/21 Acoustic and electrical specifications 2.3 MP34DT05 Frequency response Figure 3: Typical frequency response normalized to 1 kHz 8/21 DocID029902 Rev 1 MP34DT05 3 Application recommendations Application recommendations Figure 4: MP34DT05 electrical connections (top view) DocID029902 Rev 1 9/21 Application recommendations MP34DT05 Figure 5: MP34DT05 electrical connections for stereo configuration (top view) Power supply decoupling capacitors (100 nF ceramic, 1 μF ceramic) should be placed as near as possible to pin 1 of the device (common design practice). The L/R pin must be connected to Vdd or GND (refer to Table 7: "L/R channel selection"). 10/21 DocID029902 Rev 1 MP34DT05 4 Carrier tape mechanical specifications Carrier tape mechanical specifications Figure 6: Carrier tape without microphone (top view) Figure 7: Carrier tape with microphone (top view) DocID029902 Rev 1 11/21 Process recommendations 5 MP34DT05 Process recommendations To ensure a consistent manufacturing process it is strongly advised to comply with following recommendations: • • • • • • • • • The recommended pick-up area for the MP34DT05 package must be defined using the worst case (ie. no device alignment during picking process). This area has been defined considering all the tolerances of the components involved (reel, package, sound inlet). Picker tolerance shall be considered as well. To prevent damage to the MEMS membrane or incorrect pick-up and placement, do not pick up the component on the inlet area For the package outline please refer to Figure 7: "Carrier tape with microphone (top view)". Nozzle shape, size, and placement accuracy are the other key factors to consider when deciding on the coordinates for the picking. Device alignment before picking is highly recommended. A vacuum force greater than 7 psi must be avoided 1 kPa = 0.145 psi (lb/in²) = 0.0102 kgf/cm² = 0.0098 atm MSL (moisture sensitivity level) Class 3 Maximum of 3 reflow cycles is recommended All recommended dimensions (device safe-picking area) do not include the pick-andplace equipment tolerances Figure 8: Recommended picking area To have a safe pick-up "by design", ST strongly advises an ad hoc nozzle. The following picker ensures that the holes for the vacuum and the air stream are ALWAYS away from the porthole of the device (4 vacuum ports located at each corner of the device). The recommended nozzle also has a recess, in the form of a cross, which guarantees that the porthole is always left at atmospheric pressure. By using the recommended nozzle, the membrane will not suffer any sudden air disturbances during the picking or placing of the devices in the tape and reel. 12/21 DocID029902 Rev 1 MP34DT05 Process recommendations Figure 9: Recommended picker design DocID029902 Rev 1 13/21 Sensing element 6 MP34DT05 Sensing element The sensing element shall mean the acoustic sensor consisting of a conductive movable plate and a fixed plate placed in a tiny silicon chip. This sensor transduces the sound pressure into the changes of coupled capacity between those two plates. Omron Corporation supplies this element for STMicroelectronics. 14/21 DocID029902 Rev 1 MP34DT05 7 Absolute maximum ratings Absolute maximum ratings Stresses above those listed as “absolute maximum 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. Table 6: Absolute maximum ratings Symbol Ratings Vdd Supply voltage Vin Input voltage on any control pin TSTG Storage temperature range Maximum value Unit -0.3 to 5 V -0.3 to Vdd +0.3 V -40 to +125 °C ±2000 (HBM) ESD Electrostatic discharge protection ±200 (MM) V ±750 (CBM) ESD Product standard EN 55024:2010 - 3 air discharge DocID029902 Rev 1 ±15000 V 15/21 Functionality MP34DT05 8 Functionality 8.1 L/R channel selection The L/R digital pad lets the user select the DOUT signal pattern as shown in Table 7: "L/R channel selection". 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 impedance Vdd High impedance Data valid Note: As the L/R pin is internally connected to GND via a 200 kohm pull/down resistor, it is not mandatory to connect the pin itself to GND for the respective channel selection. 16/21 DocID029902 Rev 1 MP34DT05 9 Package information 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. Soldering information The HCLGA (3 x 4) 4LD package is also compliant with the RoHS and “Green” standards and is qualified for soldering heat resistance according to JEDEC J-STD-020. Land pattern and soldering recommendations are available at www.st.com. Figure 10: Recommended soldering profile limits tp TP CRITICAL ZONE RAMP-UP TL to T P TL TSMAX TEMPERATURE 9.1 tL TSMIN ts PREHEAT RAMP-DOWN T25° to PEAK 30 60 90 120 150 180 210 TIME 240 270 300 330 360 390 Table 8: Recommended soldering profile limits Description Average ramp rate Preheat Minimum temperature Maximum temperature Time (TSMIN to TSMAX) Ramp-up rate Parameter Pb free TL to TP 3 °C/sec max TSMIN TSMAX tS 150 °C 200 °C 60 sec to 120 sec TSMAX to TL Time maintained above liquids temperature Liquids temperature tL TL Peak temperature TP Time within 5 °C of actual peak temperature 60 sec to 150 sec 217 °C 260 °C max 20 sec to 40 sec Ramp-down rate 6 °C/sec max Time 25 °C (t25 °C) to peak temperature 8 minutes max DocID029902 Rev 1 17/21 Package information 9.2 MP34DT05 HCLGA package information Figure 11: HCLGA (3 x 4 x 1 mm) 4-lead package outline and mechanical data Dimensions are in millimeter unless otherwise specified General Tolerance is +/-0.15mm unless otherwise specified OUTER DIMENSIONS ITEM Length [L] Width [W] Height [H] AP DIMENSION [mm] 3 4 1.00 Ø 0.25 TOLERANCE [mm] ±0.1 ±0.1 ±0.1 ±0.1 DM00231908_1 1. 2. 18/21 The MEMS microphone plastic cap can exhibit some level of variation in color when the device is subjected to thermal processes. This variation does does not affect acoustic or electrical performance. Ring plating can be subject to change not affecting acoustic and electrical performances. DocID029902 Rev 1 MP34DT05 Package information Figure 12: Land pattern 0.85 GND 0.85 0.35 1.30 2.30 GND LR Vdd 0.95 CLK GND DOUT 0.40 0.35 GND Pad + solder paste DocID029902 Rev 1 19/21 Revision history 10 MP34DT05 Revision history Table 9: Document revision history 20/21 Date Revision 04-Nov-2016 1 Changes Initial release DocID029902 Rev 1 MP34DT05 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2016 STMicroelectronics – All rights reserved DocID029902 Rev 1 21/21