MA-BRA381-A10-6
MA-BRA381-A10-6 是一款單端輸出的底部端口模擬 MEMS 麥克風(fēng)，由一個(gè) MEMS 傳感器和一個(gè)低噪聲級(jí)專(zhuān)用集成電路（ASIC）組成。
優(yōu)勢(shì)與特點(diǎn)
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3.76×2.95×1.1 毫米底部端口
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窄靈敏度范圍 ±1 分貝
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信噪比 66 分貝 A 計(jì)權(quán)（dBA）
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射頻屏蔽
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容標(biāo)準(zhǔn)表面貼裝回流焊技術(shù)（SMD）
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符合 RoHS 標(biāo)準(zhǔn)且無(wú)鹵素
性能參數(shù)
| 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. | ||||||
應(yīng)用實(shí)例
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頭戴耳機(jī)
