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ADMP421 数据表(PDF) 8 Page - Analog Devices

部件名 ADMP421
功能描述  Omnidirectional Microphone with Bottom Port and Digital Output
Download  16 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADMP421 数据表(HTML) 8 Page - Analog Devices

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ADMP421
Rev. 0 | Page 8 of 16
PCB LAND PATTERN LAYOUT
The recommended PCB land pattern for the ADMP421 should
be laid out to a 1:1 ratio to the solder pads on the microphone
package, as shown in Figure 8. Care should be taken to avoid
applying solder paste to the sound hole in the PCB. A suggested
solder paste stencil pattern layout is shown in Figure 9. The
diameter of the sound hole in the PCB should be larger than the
diameter of the sound port of the microphone. A minimum
diameter of 0.5 mm is recommended.
4× 0.40 × 0.60
(0.30)
0.90
(0.30)
ø1.70
3.80
(0.30)
0.35
2.80
2× R0.10
(0.30)
0.35
2.05
0.70
ø1.10
Figure 8. Suggested PCB Land Pattern Layout
1.45
0.9
2.45
0.7
1.525
1.498
0.205 WIDE
0.248 × 0.498 (2×)
0.248 × 1.148 (2×)
0.248 × 0.948 (2×)
1.498 × 0.248
0.398 × 0.298 (4×)
0.362 CUT (3×)
1.17
Figure 9. Suggested Solder Paste Stencil Pattern Layout


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