MA-HFA381-H13-1AF
MA-HFA381-H13-1AF 是一款高信噪比、单端输出的顶部端口模拟 MEMS 麦克风，，， ， ，，，由一个 MEMS 传感器和一个低噪声级专用集成电路（ASIC）组成。。。。。。 。。
优势与特点
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3.5×2.65×0.98 毫米顶部端口
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单端输出
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窄迅速度规模 ±1 分贝
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信噪比，，， ， ，，，达 66.5 分贝 A 计权（dBA）
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射频屏障
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兼容标准外貌贴装回流焊手艺（SMD）
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切合 RoHS 标准且无卤素
性能参数
| Parameter | Symbol | Condition | Min | Nom. | Max | Unit |
| Sensitivity | S | f=1kHz, Pin=1Pa, 0dB=1V/Pa | -39 | -38 | -37 | dB |
| Operating Voltage | VDD | 1.6 | 2 | 3.3 | V | |
| Directivity | Omni-directional | |||||
| Polarity | Sound pressure increase | Output voltage increase | ||||
| Sensitivity vs. Voltage | ΔS | Vs= 3.3V to 2.4V | 0.5 | dB | ||
| Output Impedance | ZOUT | f=1kHz | 400 | Ω | ||
| Current Consumption1 | I | 1.6 V to 3.3V | 85 | 200 | ?A | |
| S/N Ratio | S/N | 20-20KHz Bandwidth, A-Weighted | 64.5 | 66.5 | dBA | |
| Total Harmonic Distortion | THD | 94dB SPL @1KHz | 0.11 | 0.5 | % | |
| Total Harmonic Distortion | THD | 116dB SPL @1KHz | 1 | % | ||
| Acoustic Overload Poin | AOP | THD 10%@1KHz | 124 | dBSPL | ||
| Power Supply Rejection | PSR | 100mVpp Squarewave @217Hz, A-weighted | -99 | -80 | dB | |
| Power Supply Rejection Ratio | PSRR | 200mVpp Sinewave @1KHz | 60 | 67 | dB | |
| DC output | VDC | 0.85 | V | |||
| Output load | Cload | 150 | pF | |||
| Output load | Rload | 10 | 100 | KΩ | ||
| Note：Frequency response, sensitivity and current consumption are tested by 100% on product line. | ||||||
