SPA1687LR5H-1 High SPL Differential Bottom Port TM SPA1687LR5H-1 Rev A SiSonic Microphone Datasheet The SPA1687LR5H-1 is a miniature, high-performance, low power, bottom port silicon differential TM microphone. Using Knowles proven high performance SiSonic MEMS technology, the SPA1687LR5H-1 consists of an acoustic sensor, a low noise input buffer, and a differential 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 MaxRF Protection High SPL Bottom Port Low Noise Ultra-Stable Performance Flat Frequency Response Standard SMD Reflow Differential Output Omnidirectional Small Package Low Current Typical Applications Tablets Portable electronics Digital Still Cameras Cellphones Portable Music Recorders Laptop Computers knowles.com Datasheet SPA1687LR5H-1 RevA Copyright 2016 Knowles 1 Absolute Maximum Ratings Table 1: Absolute Maximum Ratings Parameter Absolute Maximum Rating Units Vdd to Ground -0.5, +5.0 V Out-, Out+ 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. 1 Acoustic & Electrical Specifications Table 2: General Microphone Specifications Test Conditions: 23 2C, 5520% R.H., V 2.7V, no load, unless otherwise indicate DD= Parameter Symbol Conditions Min Typ Max Units Directivity Omnidirectional Polarity Increasing sound pressure Increasing Output Voltage 2 Startup Time S within 0.5dB on final value - - 30 ms Mode Switch Time 94 dB SPL 1 kHz, A-weighted - - 30 ms Table 3: Microphone Specifications Test Conditions: 23 2C, 5520% R.H., V 2.7V, no load, unless otherwise indicate DD= Parameter Symbol Conditions Min Typ Max Units Supply Voltage Vdd 2.3 2.7 3.6 V Supply Current Idd - 300 325 A Sensitivity S 94 dB SPL 1 kHz -39 -38 -37 dBV/Pa Signal to Noise Ratio SNR 94 dB SPL 1 kHz, A-weighted 64 65 - dB(A) Total Harmonic Distortion THD 94 dB SPL 1 kHz, S = Typ, Rload > 10 - 0.1 0.5 % 10% THD 1 kHz, Acoustic Overload Point AOP 132 - dB SPL S = Typ, Rload > 10 Power Supply Rejection PSRR 100 mVpp, sinewave 1K Hz 80 85 - dB Ratio 100mVpp 7/8 duty cycle rectangular wave Power Supply Rejection PSR -101 -100 217Hz, A-weight, 20K Hz BW DC Output 0.59 0.69 0.78 V Output Impedance Zout 1 kHz - - 600 DC offset OUT+ to OUT- 5 50 mV 1 Sensitivity and Supply Current are 100% tested. 2 OUT+ and OUT- must be AC coupled knowles.com Datasheet SPA1687LR5H-1 RevA Copyright 2016 Knowles 2