RF5222 Datasheet, PDF (3/8 Pages) RF Micro Devices – 3.0V TO 4.2V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER

RF5222
Pin
1
2
3
4
5
6
7
8
Pkg
Base
Function
RF IN
VREG
PDETECT or
NC
NC
RF OUT
VC2
VC1
VCC
GND
Description
RF input. Input is matched to 50Ω and DC block is provided internally.
Bias current control voltage for the first and second amplifier stage.
Power detector which provides an output voltage proportional to the RF output power level. May need external
decoupling capacitor for P_DETECT load sensitivity. May need external circuitry to bring output voltage to desired
level.
May be left unconnected if function is not desired.
This pin may be left unconnected or may be connected to ground.
RF output. A DC blocking capacitor may be needed as this pin of the PA is a DC short to ground.
Voltage supply for second stage amplifier. External low frequency bypass capacitors should be connected if no
other low frequency decoupling is employed.
Voltage supply for the first amplifier stage. External low frequency bypass capacitors should be connected if no
other low frequency decoupling is employed.
Supply voltage for the bias reference and control circuit. May be connected with V_C1 and V_C2 (with a single sup-
ply voltage). The 56pF bypass capacitor should be placed as close as possible to the IC for the best perfor-
mance.
The center metal base of the QFN package provides DC and RF ground as well as heat sink for the amplifier.
INDEX
AREA
2.20
Package Drawing
2 PLCS
0.10 C
0.10 C
2 PLCS
0.50
0.40
0.152
REF
-B-
-A-
2.20
0.65
0.05
0.00
SEATING
PLANE
-C-
0.10
MAX
11..2000TYP
Dimensions in mm.
Shaded lead is pin 1.
0.31
0.21
0.28
0.18
0.10 M C A B
Rev A0 DS070717
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
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