Datasheet

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SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
Notes - For +20 dBm restrictions on operation please consult the following section.
- To ensure correct operation at the highest power levels ensure that the current limiter OcpTrim is adjusted to
permit delivery of the requisite supply current.
- If the PA_BOOST pin is not used it may be left floating.
5.4.3. High Power +20 dBm Operation
The SX1272/73 has a high power +20 dBm capability on PA_BOOST pin, with the following settings:
Table 32 High Power Settings
Notes - High Power settings must be turned off when using PA0
- The Over Current Protection limit should be adapted to the actual power level, in RegOcp
Specific Absolute Maximum Ratings and Operating Range restrictions apply to the +20 dBm operation. They are listed in
Tab le 33 and Ta bl e 34.
Table 33 Operating Range, +20 dBm Operation
Table 34 Operating Range, +20 dBm Operation
The duty cycle of transmission at +20 dBm is limited to 1%, with a maximum VSWR of 3:1 at antenna port, over the
standard operating range (-40 to +85 °C). For any other operating conditions, contact your Semtech representative.
Register Address
Value for
High Power
Default value
PA0 or +17dBm
Description
RegPaDac 0x5A 0x87 0x84
High power PA control
Symbol Description Min Max Unit
DC_20dBm Duty Cycle of transmission at +20 dBm output - 1 %
VSWR_20dBm Maximum VSWR at antenna port, +20 dBm output - 3:1 -
Symbol Description Min Max Unit
VDDop_20dBm Supply voltage, +20 dBm output 2.4 3.7 V