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2-105
RF2131
Rev B4 010417
2
Application Schematic 2
Optimized for Power and Efficiency over 4.0V to 4.8V
This application circuit differs from Application schematic 1 only slightly in the output tuning. The output shunt capacitor
has been moved 0.060” closer to the device, and has increased from 5.6 pF to 6.2pF. This retuning allows over
+30.8dBm of output power to be achieved down to 4.0V, however a couple of percent points of efficiency are sacrificed.
This implementation is recommended for some additional margin on output power.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
BIAS
100 nF
100 pF
RF IN
10 nF
V
CC
10 nF
100 pF
10 nH
4.7 pF
10 nH
4.7 pF
2.7 nH
100 pF
RF OUT
6.2 pF
33 pF
V
CC
100 pF
100 nF
33 pF
V
CC
0.140"
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