SM1211E915TOPIC Semtech, SM1211E915TOPIC Datasheet - Page 83

• Manufacturer Part Number: SM1211E915TOPIC
• Description: KIT PICTAIL EXT FOR SX1211
• Manufacturer: Semtech
• Type: Transceiver, UHFr

Specifications of SM1211E915TOPIC

• Frequency: 915MHz
• For Use With/related Products: SX1211
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Notes:
Rev 7 – Sept 2
ADVANCED COMMUNICATIONS & SENSING
As noted in section 7.5.4, the 869 MHz SAW filter does not cover the whole European 863 – 870 MHz
frequency band when used in a 50 ohms environment. Hence the output power degradation at the lowest
frequencies. For applications in the 863 – 870 MHz band it is recommended that an appropriate SAW filter be
implemented or that the SAW response tuned by external matching.
The SAW filter ripple references are the insertion loss of each SAW at 869 MHz and 915 MHz.
7.6.8. Pout and IDD vs. PA Setting
nd
, 2008
12.00
10.00
-12.0
8.00
6.00
4.00
2.00
0.00
12.0
-4.0
-8.0
8.0
4.0
0.0
902
0
Figure 74: Pout and IDD at all PA Settings, 869 MHz
904
Figure 73: Pout for 915 MHz Band Operation
906
1
908
Pout & IDD vs. TXParam_Pout Setting
2
910
Pout over the Frequency Band
912
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Frequency [MHz]
Pout
TXParam_Pout [d]
3
914
Pout
SAW Ripple
916
IDD
4
918
920
5
922
924
6
926
928
4.0
2.0
0.0
-2.0
-4.0
-6.0
-8.0
7
28.00
26.00
24.00
22.00
20.00
18.00
16.00
14.00
12.00
10.00
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SX1211