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AN4630 Datasheet(PDF) 16 Page - STMicroelectronics

Part # AN4630
Description  PCB design guidelines for the BlueNRG and BlueNRG-MS devices
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4630 Datasheet(HTML) 16 Page - STMicroelectronics

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Design recommendations when using QFN32
package
AN4630
4
Design recommendations when using QFN32
package
Design recommentations when using QFN32 package
The application board TOP layer layout using the QFN32 package is shown in Figure 11:
"QFN32 package application board TOP layer".
Figure 11: QFN32 package application board TOP layer
It is crucial to connect very well the ground of the exposed pad of the QFN32 to the ground
on the application board. So many vias are necessary to be sure that the parasitic inductor
introduced from each via is negligible.
16/33
DocID027262 Rev 1



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