MA-BRA381-A10-6
MA-BRA381-A10-6 是一款单端输出的底部端口模拟 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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3.76×2.95×1.1 毫米底部端口
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窄灵敏度范围 ±1 分贝
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信噪比 66 分贝 A 计权（dBA）
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射频屏蔽
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容标准表面贴装回流焊技术（SMD）
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符合 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 | dBFS2 | ||
| Polarity |
|
Sound pressure increase | Output voltage increase | dBFS | ||
| Sensitivity vs. Voltage | ΔS | Vs= 3.3V to 1.6V | 0.5 | dB | ||
| Output Impedance | ZOUT | f=1kHz |
|
|
400 | Ω |
| Current Consumption1 | I | 1.6 V to 3.3V |
|
95 | 200 | µA |
| S/N Ratio | S/N | 20-20kHz Bandwidth, A-Weighted | 64 | 66 |
|
dBA |
| Total Harmonic Distortion | THD | 94dB SPL @1KHz |
|
0.1 | 0.5 | % |
| Total Harmonic Distortion | THD | 120dB SPL @1KHz |
|
1 |
|
% |
| Acoustic Overload Poin | AOP | THD 10%@1KHz |
|
124 |
|
dBSPL |
| Power Supply Rejection | PSR | 100mVpp Squarewave @217Hz, A-weighted |
|
-105 | -80 | dB |
| Power Supply Rejection Ratio | PSRR | 200mVpp Sinewave @1KHz | 60 | 74 |
|
dB |
| DC output | VDC |
|
|
0.85 |
|
V |
| Output load |
Cload |
|
|
|
150 | pF |
| Output load | Rload |
|
0.01 |
|
10 | MΩ |
|
|
Note：Frequency response, sensitivity and current consumption are tested by 100% on product line. | |||||
应用实例
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头戴耳机
