MP34DT04TR-C1

MP34DT04-C1 MEMS audio sensor omnidirectional digital microphone Datasheet - production data • • • Gaming and virtual reality input devices Digital still and video cameras Antitheft systems Description The MP34DT04-C1 is an ultra-compact, lowpower, 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. Features • • • • • • • • Single supply voltage Low power consumption 120 dBSPL acoustic overload point 64 dB signal-to-noise ratio Omnidirectional sensitivity –26 dBFS sensitivity PDM output HCLGA package − Top-port design − SMD-compliant − EMI-shielded − ECOPACK®, RoHS, and “Green” compliant 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 MP34DT04-C1 has an acoustic overload point of 120 dBSPL with a 64 dB signal-to-noise ratio and –26 dBFS sensitivity. The MP34DT04-C1 is available in a top-port, SMD-compliant, 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 [ºC] Package Packing MP34DT04TR-C1 -40 to +85 HCLGA (3x4 x1.095 mm) 4LD Tape and reel Applications • • • • • • Mobile terminals Laptop and notebook computers Portable media players VoIP Speech recognition A/V eLearning devices December 2016 DocID029851 Rev 2 This is information on a product in full production. 1/21 www.st.com Contents MP34DT04-C1 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 DocID029851 Rev 2 MP34DT04-C1 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 ................................................................................................................6 Table 5: Timing characteristics ...................................................................................................................7 Table 6: Frequency response mask for digital microphones ......................................................................8 Table 7: Absolute maximum ratings .........................................................................................................15 Table 8: L/R channel selection .................................................................................................................16 Table 9: Recommended soldering profile limits........................................................................................17 Table 10: Document revision history ........................................................................................................20 DocID029851 Rev 2 3/21 List of figures MP34DT04-C1 List of figures Figure 1: Pin connections ...........................................................................................................................5 Figure 2: Timing waveforms .......................................................................................................................7 Figure 3: Frequency response and mask ...................................................................................................8 Figure 4: MP34DT04-C1 electrical connections (top view) ........................................................................9 Figure 5: MP34DT04-C1 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 (3x4x1.095) 4-lead package outline and mechanical data ........................................18 Figure 12: Land pattern.............................................................................................................................19 4/21 DocID029851 Rev 2 MP34DT04-C1 1 Pin description Pin description Figure 1: Pin connections LR 2 3 CLK Vdd 1 4 DOUT 5 GND 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 DocID029851 Rev 2 5/21 Acoustic and electrical specifications MP34DT04-C1 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 Vdd Supply voltage Idd Current consumption in normal mode IddPdn Current consumption in power-down mode(2) Scc Short-circuit current AOP Acoustic overload point So Test condition Min. Typ.(1) Max. Unit 1.6 1.8 3.6 V Mean value 650 1 μA 10 μA 10 mA 120 Sensitivity -29 -26 dBSPL -23 dBFS SNR Signal-to-noise ratio A-weighted at 1 kHz, 94 dB SPL 64 dB (A) PSR Power supply rejection 100 mVpp sine 1 kHz -70 dBFS fCLK Input clock frequency(3) Ton Turn-on time(4) Top Operating temperature range VIOL Low-level logic input/output voltage VIOH High-level logic input/output voltage CLOAD 1.2 3.25 MHz 10 ms -40 +85 °C Iout = 1 mA -0.3 0.35xVdd V Iout = 1 mA 0.65xVdd Vdd+0.3 V 100 pF Guaranteed by design Capacitive load 2.4 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 Parameter Test condition Typ. value(1) Distortion 100 dBSPL (50 Hz - 4 kHz)