RF5144 Datasheet, PDF (5/8 Pages) RF Micro Devices – DUAL-BAND CDMA 800MHz/1900MHz TRI-MODE POWER AMPLIFIER MODULE

RF5144
VMODE_PCS
VREG_PCS
RF IN - PCS
VREG_Cell
Evaluation Board Schematic - CDMA
VCC BIAS
VCC1_PCS
C2
C13
4.7 μF 2200 pF
50 Ω μstrip
C7
C14
4.7 μF 2200 pF
C4
4.7 μF
C6
4.7 μF
C
4.7 μF
C16
2200 pF
C6
4.7 μF
C10
2200 pF
24 23 22 21 20 19
1
Bias
18
PCS
2
17
3
16
Bias
4
Cell
15
5
14
6
13
7 8 9 10 11 12
C9
1000 pF
VCC2_PCS
C1
22 μF
50 Ω μstrip
RF OUT_PCS
50 Ω μstrip
RF OUT_Cell
VMODE_Cell
RF IN_Cell
50 Ω μstrip
C11
2200 pF
C8
4.7 μF
VCC1_Cell
L2*
VCC2_Cell
C12
C5
2200 pF 22 μF
*The current rating for component L2 needs to be 1A. On the evaluation board, the parasitic
inductance of a 0603 0 Ω resistor (Panasonic part #ERJ-3GEY0R00) is used to realize the required
inductance. An inductor with value between 1 nH and 1.5 nH can also be used for L2. Different
inductance will give slight tradeoff between ACPR and efficiency. The 0 Ω resistor is chosen on the
evaluation board for the reason of low BOM cost.
Rev A0 060214
2-693