SPM0408LE5H-TB TM Amplified Zero-Height SiSonic Microphone With Enhanced RF Protection The SPM0408LE5H-TB is a miniature, high- Features: performance, low power, bottom port Up to 20dB of Gain silicon microphone. Using Knowles proven Enhanced RF protection TM high performance SiSonic MEMS Flat Frequency Response TM technology, the SPM0408LE5H-TB consists Zero-Height Mic of an acoustic sensor, a low noise input Operation to 5v buffer, and an output amplifier. These Ultra-Stable Performance devices are suitable for applications such as Standard SMD Reflow cellphones, smart phones, laptop Omnidirectional computers, sensors, digital still cameras, portable music recorders, and other portable electronic devices where excellent wideband audio performance and RF immunity are required. Revision: D 3/27/2013 Sheet 1 of 11 2013 Knowles Electronics SPM0408LE5H-TB 1. ABSOLUTE MAXIMUM RATINGS Parameter Absolute Maximum Rating Units V to Ground -0.5, +7.0 V DD OUT to Ground -0.3, V + 0.3 V DD Input Current to Any Pin 5 mA Temperature Range -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. 2. ACOUSTIC & ELECTRICAL SPECIFICATIONS TEST CONDITIONS: 23 2C, 5520% R.H., V (min) < V < V (max), no load, Gain = 20dB, DD DD DD unless otherwise indicated Parameter Symbol Conditions Min Typ Max Units 1 Supply Voltage V 1.5 - 5.5 V DD 1,2 Supply Current I - - 350 A DD 1 Sensitivity S 94 dB SPL 1 kHz -21 -18 -15 dBV/Pa Signal to Noise Ratio SNR 94 dB SPL 1 kHz, A-weighted - 63 - dB(A) Total Harmonic 94 dB SPL 1 kHz, THD - - 1 % Distortion S = Typ, R > 2 k load Acoustic Overload 10% THD 1 kHz, Gain = 0dB, 3 AOP 115 - - dB SPL Point S = Typ, V = 5.5V, R > 2 k DD load Output Impedance Z 1 kHz - - 200 OUT Directivity Omnidirectional Polarity Increasing sound pressure Increasing output voltage 1 100% tested. 2 Maximum specifications are measured at maximum V . Typical specifications are measured at V = 1.8V. DD DD 3 For gain = 20dB, AOP(min) = 95 dB SPL. Revision: D 3/27/2013 Sheet 2 of 11 2013 Knowles Electronics