詳細信息
（MEMS）麥克風有許多較傳統(tǒng)麥克風優(yōu)勝之處。它體積較小、更穩(wěn)定、更統(tǒng)一，而且更可靠。此外，它也能輕易與其他微型電路整合，因此適合廣泛應用于各行各業(yè)，包括工業(yè)、醫(yī)藥、汽車，以至流動通訊裝置、平板電腦、筆記本電腦等。它亦適合應用于任何需要纖巧、高效率的麥克風解決方案的應用范圍。
A.Introduction
The MEMS Microphones are integrated with specialized pre-amplification ASIC to provide high sensitivity, high SNR output from a capacitive audio sensor. It’s packaged fro surface mounting and high temperature re-flow assembly.
B.Temperature Range
1. Operating Temperature Range: -40℃ to +100℃
2. Storage Temperature Range: -40℃ to +125℃
C.Technical Specification(test conditions:+25+/-2℃， 45%~65%R.H)
Items | Min. | Nom. | Max. | Unit | ||
1 | Directivity | Omni Directional | ||||
2 | Operating Voltage | 1.6 | -- | 3.6 | V | |
3 | Sensitivity (F=1KHz) | -41 | -38 | -35 | dB | |
4 | Current consumption | -- | -- | 200 | uA | |
5 | Output impedance | -- | -- | 200 | Ω | |
6 | Signal to noise ratio (F=1KHz) | -- | 58 | -- | dB | |
7 | Maximum input sound level | 120 | dB SPL | |||
8 | Total Harmonic Distortion @ 104dB | -- | -- | 1 | % | |
9 | Total Harmonic Distortion @ 114dB | -- | -- | 10 | % | |
10 | Sensitivity variation over operating voltage range (1.6 to 3.6 V) | -0.5 | 0 | 0.5 | dB | |
D.Frequency Response Curve:
E.Mechanical Layout and Dimensions:
Item | Symbol | Dim. | Tol. | Units |
Length | L | 3.76 | ±0.10 | mm |
Width | W | 2.95 | ±0.10 | mm |
Height | H | 1.10 | ±0.10 | mm |
ACOUSTIC PORT | AP | Φ0.250 | ±0.05 | mm |