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SPK0415HM4H-B Dataheets PDF



Part Number SPK0415HM4H-B
Manufacturers Knowles Electronics
Logo Knowles Electronics
Description Digital High-SNR SiSonic Microphone
Datasheet SPK0415HM4H-B DatasheetSPK0415HM4H-B Datasheet (PDF)

SPK0415HM4H-B Digital High-SNR SiSonicTM Microphone The SPK0415HM4H-B is a miniature, highperformance, low power, top port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPK0415HM4H-B consists of an acoustic sensor, a low noise input buffer, and a sigma-delta modulator. These devices are suitable for applications such as cellphones, smart phones, laptop computers, sensors, digital still cameras, portable music recor.

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SPK0415HM4H-B Digital High-SNR SiSonicTM Microphone The SPK0415HM4H-B is a miniature, highperformance, low power, top port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPK0415HM4H-B consists of an acoustic sensor, a low noise input buffer, and a sigma-delta modulator. These devices are suitable for applications such as cellphones, smart phones, laptop computers, sensors, digital still cameras, portable music recorders, and other portable electronic devices where excellent audio performance and RF immunity are required. The high Signal-to-Noise-Ratio (SNR) of the SPK0415HM4H-B enhances the performance of far-field applications and many complex, multi-microphone algorithms. Features: • Low Noise • Low Current • RF Shielded • PDM Output • Supports Dual Multiplexed Channels • Ultra-Stable Performance • Standard SMD Reflow • Omnidirectional Revision: E Sheet 1 of 13 6/18/2013 ©2013 Knowles Electronics SPK0415HM4H-B 1. ABSOLUTE MAXIMUM RATINGS Parameter VDD, DATA to Ground CLOCK to Ground SELECT to Ground Input Current Short Circuit Current to/from DATA Temperature Range Absolute Maximum Rating -0.3, +5.0 -0.3, +5.0 -0.3, +5.0 ±5 Indefinite to Ground or VDD -40 to +100 Units V V V mA sec °C Stresses exceeding these “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation at these or any other conditions beyond those indicated under “Acoustic & Electrical Specifications” is not implied. Exposure beyond those indicated under “Acoustic & Electrical Specifications” for extended periods may affect device reliability. 2. ACOUSTIC & ELECTRICAL SPECIFICATIONS TEST CONDITIONS: 23 ±2°C, 55±20% R.H., VDD=1.8 V, FCLOCK=2.4 MHz, SELECT pin grounded, no load, unless otherwise indicated Parameter Supply Voltage1 Supply Current1,2,3 Sleep Current3 Sensitivity1 Symbol VDD IDD ISLEEP S Conditions FCLOCK < 1 kHz 94 dB SPL @ 1 kHz Min Typ Max Units 1.6 - 3.6 V - - 650 µA - 25 50 µA -29 -26 -23 dBFS Signal to Noise Ratio SNR 94 dB SPL @ 1 kHz, A-weighted - 61 - dB(A) Total Harmonic Distortion Acoustic Overload Point THD AOP 94 dB SPL @ 1 kHz, S = Typ 10% THD @ 1 kHz, S = Typ - .10 .35 % 119 122 - dB SPL Power Supply Rejection Ratio PSRR 200 mVpp sinewave @ 1 kHz - 39 - dBV /FS Power Supply Rejection PSR 100 mVpp square wave @ 217 Hz, A-weighted - -71 - dBFS (A) DC Output Fullscale = ±100 - -4 - % FS Directivity Omnidirectional Polarity Increasing sound pressure Increasing density of 1’s Data Format ½ Cycle PDM Logic Input High VIH 0.65xVDD - 3.6 V Revision: E Sheet 2 of 13 6/18/2013 ©2013 Knowles Electronics SPK0415HM4H-B Parameter Symbol Conditions Min Typ Max Units Logic Input Low Logic Output High VIL VOH IOUT = 1 mA -0.3 - 0.35xVDD V 0.65xVDD - VDD V Logic Output Low VOL IOUT = 1 mA 0 - 0.35xVDD V SELECT (high) SELECT (low) VDD -0.2 -0.3 - 3.6 V 0.2 V.


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