RF5122 Datasheet, PDF (6/11 Pages) RF Micro Devices – 3V TO 3.6V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER

RF5122
Application Schematic
for Improved Second Harmonic Performance
P1
1 ^GND
P1-2 ₂ VCC
P1-3 ₃ VCC
VCC
VCC
3.6K
P2
P2-3 ₃ VREG
1 nF
P2-2 ₂ PDETECT
1 ^GND
8
J1
RF IN
50  strip
1
VREG
2
1 F
27 nH
7
6
5
N _{1 F}
ESIG _{1.8 nH*}
D ^{50strip 10pF 50strip}
J4
RF OUT
3
330 pF
PDETECT
2.4 pF*
4**
W _{* The2.4pFcapcanbeplacedat thesamepoint asthe 1.8nHinductor}
E _{which should be as close as possible to the DC blocking cap (10 pF). The}
placement can be modified for the best linear performance. A series
N ^{capacitor (10 pF) must be added to provide a DC block after the 2Fo Filter.}
10 pF
FOR^{**Pin 4 must be left as a no-connect on the PCB.}
NOT
6 of 11
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DS110617