AP3722AT

AP3722AT Analog MEMS Microphone AP3722AT is an omnidirectional, stable, low power, top port, analog MEMS microphone. The AP3722AT consists of a MEMS acoustic transducer and a low noise amplifier, which is suitable for cellphones, Bluetooth earphones, headsets, and other portable electronic devices. Features:      Flat frequency response Low current consumption Omnidirectional Good uniformity Standard SMD Reflow Typical applications:     Cellphones Bluetooth earphones Headsets Laptops  Digital cameras 1. ABSOLUTE MAXIMUM RATINGS Parameter VDD to GND ESD Tolerance (HBM) ESD Tolerance (CDM) Storage Temperature Maximum Rating Units -0.3 to +5.5 ±2.0 ±200 -40 to +105 V kV V °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. All Power Semiconductor Co.,Ltd V1.1 1 AP3722AT Analog MEMS Microphone 2. ACOUSTIC & ELECTRICAL SPECIFICATIONS Test condition: 25±2°C, 45±20% R.H., unless otherwise indicated. Parameter Symbol Directivity - Sensitivity S Signal to Noise Ratio Total Harmonic Distortion Acoustic Overload Point Output DC Impedance Conditionsi Omnidirectional -43 -42 -41 dBV/Pa 94 dB SPL @ 1 kHz 94 dB SPL @ 1 kHz, THD 0.1 % 94 dB SPL @ 1 kHz AOP 125 dB SPL 10% THD @ 1 kHz IDD Rejection Units dB(A) Supply Current Power Supply Max 57 VDD Rejection Ratio Typ SNR Supply Voltage Power Supply Min 1.6 95 3.6 V 110 μA A-weighted 200 mVpp sinewave @ 1 PSRR 66 dB kHz, VDD = 1.8 V 100 mVpp square wave PSR -92 dB @ 217 Hz, Vdd = 1.8V, A-weighted - 220 300 Ω 3. FREQUENCY RESPONSE CURVE All Power Semiconductor Co.,Ltd V1.1 2 AP3722AT Analog MEMS Microphone 4. APPLICATION CIRCUIT V supply M EM S m icrophone Codec C1 VDD - OUTPUT + C2 GND V out RL Analog ground Power supply decoupling: A 0.1uF ceramic type decoupling capacitor C1is strongly recommended for every microphone and it should be placed as close to the VDD pad to reduce the noise on power supply; The trace connected to each pad of capacitor should be as short as possible, and should stay on one layer of PCB without via.For the best performance, recommend to place the capacitor equidistance from power and ground pins of microphone, or slightly closer to the power pin if space not allowed. System ground should connect to far side of the capacitor All Power Semiconductor Co.,Ltd V1.1 3 AP3722AT Analog MEMS Microphone 5. MECHANICAL SPECIFICATIONS Item Dimension Tolerance Length (L) 3.76 ±0.10 Width (W) 2.24 ±0.10 Height (H) 1.10 ±0.07 Acoustic Port (AP) Ø0.5 ±0.05 Pin # Description Pin Name 1 Power Supply VDD 2 Ground GND 3 Ground GND 4 Output Signal OUT Dimensions are in millimeters unless otherwise specified. Tolerance is ±0.15mm unless otherwise specified All Power Semiconductor Co.,Ltd V1.1 4 AP3722AT Analog MEMS Microphone 6. EXAMPLE OF LAND PATTERN 7. EXAMPLE SOLDER STENCIL PATTERN Note: Dimensions are in millimeters unless otherwise specified. All Power Semiconductor Co.,Ltd V1.1 5 AP3722AT Analog MEMS Microphone 8. PACKING & MARKING DETAIL Note: 1) Dimensions are in mm; 2) Do not push the vacuum suction nozzle alignment the port hole; 3) Tape & Reel Per EIA-481 standard; 4) Label applied to external package and direct to reel; 5) Static voltage