Application Circuit Description and Layout
SOT_89
MGA 31589
Oct 2010
VDD
C7
W = 0.57 mm
G = 0.59 mm
C7
C6
C5
C6
C5
IN
OUT
L2
C8
C1
L3
C9
L1
C2
C3
C4
L2
MGA-31589
C8
C1
C9
RF IN
RF OUT
L3
L1
C2
C3
C4
Figure 27. Circuit diagram
Figure 28. Demo board
Description
Bill of Materials
Description
For 700 – 800 MHz
For 800 – 1000 MHz
Circuit
Symbol Size
Value
Part Number
Manufacturer
Kyocera
Kyocera
Kyocera
Kyocera
Murata
Murata
Murata
Murata
Murata
TDK
Value
Part Number
Manufacturer
C1
C2
C3
C4
C5
C6
C7
C8*
C9*
L1
0402 6.8 pF
0402 3.3 pF
0402 1.2 pF
0402 3.6 pF
0402 100 pF
0402 0.1 mF
0805 2.2 mF
0402 100 pF
0402 100 pF
0402 5.6 nH
0603 22 nH
0402 2.7 nH
CM05CH6R8C50AH
CM05CH3R3C50AH
CM05CH1R2C50AH
CM05CH3R6C50AH
5.6 pF
5.1 pF
3.9 pF
3.0 pF
100 pF
0.1 mF
2.2 mF
100 pF
100 pF
5.6 nH
22 nH
4.3 nH
CM05CH5R6C50AH
CM05CH5R1C50AH
CM05CH3R9C50AH
Kyocera
Kyocera
Kyocera
Murata
Murata
Murata
Murata
Murata
Murata
Toko
GJM1555C1H3R0BB01D
GRM1555C1H101JA01B
GRM155R71C104KA88D
GRM21BR61A225KA01L
GRM1555C1H101JA01B
GRM1555C1H101JA01B
LLP1005-FH5N6C
GRM1555C1H101JA01B
GRM155R71C104KA88D
GRM21BR61A225KA01L
GRM1555C1H101JA01B
GRM1555C1H101JA01B
MLK1005S5N6DT000
0603CS-22NXJLW
L2
CoilCraft
Toko
0603CS-22NXJLW
CoilCraft
TaiyoYuden
L3
LLP1005-FH2N7C
HK10054N3S-T
Note: * as blocking capacitor, not required in actual application circuit.
For best performance, MGA-31589 requires only simple input and output matching network. The C3, C4, and L3 act
as the output tuning circuitry for matching and OIP3 optimization. Bandpass network C1,C2, and L1 forms the input
matching network. To bias MGA-31589, a +5 V supply (Vdd) is connected to the output pin thru a RF choke, L2 (which
isolates the inband signal from the DC supply). The low frequency bypass capacitors C6 and C7 help to eliminate low
frequency signals from power supply. Blocking capacitors are required for its input (C8) and output (C9), to isolate the
supply voltage from succeeding circuits. The recommended output tuning is for achieving wideband best OIP3, while
meeting typical specifications for other parameters.
8
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
