SPW0442HR5H-1 Precision Top Port TM SPW0442HR5H-1 Rev E SiSonic Microphone Datasheet The SPW0442HR5H-1 is a miniature, high-performance, low power, top port silicon microphone. TM Using Knowles proven high-performance SiSonic MEMS technology, the SPW0442HR5H-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 portable electronic devices where excellent wideband audio performance and RF immunity are required. Product Features Top Ported Design Matched Sensitivity Ultra-Stable Performance Small Package Standard SMD Reflow Low Current Omnidirectional MaxRF Protection Typical Applications Tablets Portable electronics Digital Still Cameras Cellphones Portable Music Recorders Laptop Computers knowles.com Datasheet SPW0442HR5H-1 Rev E Copyright 2017 Knowles 1 Absolute Maximum Ratings Table 1: Absolute Maximum Ratings Parameter Absolute Maximum Rating Units Vdd to Ground -0.5, +5.0 V OUTPUT to Ground -0.3, Vdd+0.3 V Input Current to any pin 5 mA Temperature -40 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. Acoustic & Electrical Specifications Table 2: Normal Mode Microphone Specifications Test Conditions: 23 2C, 5520% R.H., Vdd(min) < Vdd < Vdd(max), no load, unless otherwise indicated Parameter Symbol Conditions Min Typ Max Units Supply Voltage Vdd 1.5 - 3.6 V Supply Current Idd Vdd = 1.8V - 130 165 A 1 Supply Current Idd Vdd = 3.6V - 150 185 A 1 Sensitivity S 94 dB SPL 1 kHz -43 -42 -41 dBV/Pa Signal to Noise Ratio SNR 94 dB SPL 1 kHz, A-weighted - 59 - dB(A) Total Harmonic 94 dB SPL 1 kHz, THD - 0.15 0.25 % Distortion S = Typ, Rload > 3k 10% THD 1 kHz, Acoustic Overload Point AOP 128 130 - dB SPL S = Typ, Vdd = 3.6V, Rload > 3k Power Supply Rejection 200 mVpp sine wave 50-20kHz PSRR - 66 - dB Ratio 1kHz, Vdd = 1.8V Power Supply Rejection PSR 100 mVpp square wave - -100 - dBV(A) DC Output Vdd = 1.5V - 1.3 - V Output Impedance Zout 1 kHz - - 500 Directivity Omnidirectional Polarity Increasing sound pressure Decreasing output voltage 1 100% tested. Application Notes V DD .1f R F Notes: All Ground pins must be connected to ground. V DD Capacitors near the microphone should not contain OUTPUT R S Class 2 dielectrics due to their piezoelectric effects. Detailed information on acoustic, mechanical, and system integration can be found in the latest V REF TM GROUND SiSonic Design Guide application note. External Gain = -R /R F S Dashed Section Represents TM (Set By User) SiSonic Microphone Figure 1: Typical Application Circuit knowles.com Datasheet SPW0442HR5H-1 Rev E Copyright 2017 Knowles 2