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RN4870 データシート(PDF) 13 Page - Microchip Technology

部品番号 RN4870
部品情報  Bluetooth 4.2 Low Energy Module
PDF  48 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RN4870 データシート(HTML) 13 Page - Microchip Technology

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 2016 Microchip Technology Inc.
DS50002489A-page 13
RN4870/71
4.0
PHYSICAL DIMENSIONS AND
ATTRIBUTES
4.1
RN4870 Module
Figure 4-1 shows the physical dimensions of the
RN4870 module. Figure 4-2 illustrates the recom-
mended PCB layout, and Figure 4-3 shows the recom-
mended mounting details.
Ensure that there is no top copper layer near the test
pin area, indicated by the shaded keep out areas, as
shown in Figure 4-2. When laying out the host PCB, the
areas under the antenna must not contain any top,
inner layer, or bottom copper as shown in Figure 4-3. A
low-impedance ground plane ensures the best radio
performance (best range; lowest noise). Figure 4-3
also shows a minimum ground plane area to the left
and right side of the module for best antenna
performance. The ground plane can be extended
beyond the minimum recommended as required for
host PCB EMC noise reduction. For best range
performance, keep all external metal at least 30 mm
away from the ceramic chip antenna.
FIGURE 4-1:
RN4870 MODULE DIMENSIONS



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