SPH1642HT5H-1 Knowles

SPH1642HT5H-1 HARDY V2 WIDE BANDWIDTH, LOW NOISE, PRECISION TM TOP PORT SISONIC MICROPHONE The SPH1642HT5H-1 is a miniature, high-performance, low power, matched sensitivity top port silicon microphone. Using Knowles proven high performance SiSonic MEMS technology, the SPH1642HT5H-1 consists of an acoustic sensor, a low noise input buffer, and an output amplifier. These devices are suitable for applications such as cellphones, smart phones, laptop computers, sensors, digital still cameras, portable music recorders, and other PRODUCT FEATURES portable electronic devices where excellent wideband audio performance and RF immunity are required. Matched Sensitivity LGA Package Flat Frequency Response Change Vdd Regulator Low Current Pump MaxRF Protection Top Port Ultra-Stable Performance MEMS OUT Buffer Transducer Standard SMD Reflow GND Omnidirectional TYPICAL APPLICATIONS Portable electronics ABSOLUTE MAXIMUM RATINGS Cellphones Table 1: Absolute Maximum Ratings Laptop Computers Tablets Parameter Absolute Maximum Rating Units Digital Still Cameras Portable Music Recorders Vdd to Ground -0.3, +5.0 V Out to Ground -0.3, Vdd+0.3 V Input Current to any pin 5 mA Storage Temperature -40 to +100 C Operating Temperature -30 to +100 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. knowles.com DATASHEET SPH1642HT5H-1 REV E 2017, Knowles Electronics, LLC, Itasca, IL, USA. All Rights Reserved. SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.WIDE BANDWIDTH, LOW NOISE, PRECISION TM TOP PORT SISONIC MICROPHONE 1 ACOUSTIC & ELECTRICAL SPECIFICATIONS Table 2: General Microphone Specifications Test Conditions: 23 2C, 5520% R.H., Vdd=1.8V, no load, unless otherwise indicated Parameter Symbol Conditions Min Typ Max Units Supply Voltage Vdd 1.5 - 3.6 V Vdd = 3.6V - 132 185 Supply Current Idd A Vdd = 1.8V - 117 130 Sensitivity S 94 dB SPL 1 kHz -39 -38 -37 dBV/Pa Signal to Noise Ratio SNR 94 dB SPL 1 kHz, A-weighted - 65 - dB(A) Total Harmonic Distortion THD 94 dB SPL 1 kHz, S = Typ, Rload > 2k - 0.25 - % 1% THD 1 kHz - 107 - dB SPL Vdd = 1.8v, S = Typ, Rload > 2k 10% THD 1 kHz, Acoustic Overload Point AOP - 124 - dB SPL Vdd = 1.8v, S = Typ, Rload > 2k Low Frequency Rolloff LFRO -3dB relative to 1kHz - 55 - Hz Power Supply Rejection Ratio PSRR 200 mVpp sinewave 1kHz, Vdd = 1.8 v - 77 - dB 200 mVpp 7/8 duty cycle rectangular wave Power Supply Rejection PSR+N - -102 - dBV(A) 217 Hz, Vdd = 1.8V, A-weighted DC Output Vdd = 1.8V - 1.30 - V Output Impedance 1 kHz - 500 Sensitivity Drop Vdd(min) Vdd Vdd(max) - - 0.25 dB Directivity Omnidirectional Polarity Increasing sound pressure Increasing output voltage 1 Sensitivity and Supply Current are 100% tested. APPLICATION NOTES Figure 1: Typical Application Circuit Codec or NOTES: Applications All Ground pins must be Processor Vdd connected to ground. Vdd Analog Mic Capacitors near the microphone should Interface Mic Vdd not contain Class 2 dielectrics due to Vdd their piezoelectric effects. OUT GND Rout Detailed information on acoustic, mechanical, and system integration TM can be found in the latest SiSonic GND Design Guide application note. knowles.com DATASHEET SPH1642HT5H-1 REV E 2017, Knowles Electronics, LLC, Itasca, IL, USA. All Rights Reserved. 2 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.