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BLE121LR Datasheet(PDF) 5 Page - Silicon Laboratories

Part # BLE121LR
Description  Renamed "Bluetooth Smart" to "Bluetooth Low Energy" according to the official Bluetooth SIG nomenclature
PDF  35 Pages
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

BLE121LR Datasheet(HTML) 5 Page - Silicon Laboratories

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1 Design Check List
Min 17mm
Min 17mm
Metal clearance
area
Board edge
•
Make sure that the programing
interface (P2_, P2_2, reset) is available
for debugging or FW updates
•
Add test points for testing the current
consumption
•
Make sure that all the IO’s are in a
known state
•
Make sure that the layout under the
antenna is done as instructed
Place large capacitor in parallel
with the battery to reduce the
peak current drawn from the
battery
The external DCDC converter
will reduce the maximum TX
power by ~2 dB
The DCDC pin (P1_7) can only be
used for controlling the external
DCDC. The operation of P1_7 must
not be altered by SW.



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