RF2157 데이터 시트보기 (PDF) - RF Micro Devices
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RF2157 Datasheet PDF : 10 Pages
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RF2157
Evaluation Board Schematic
Korea - CDMA
(Download Bill of Materials from www.rfmd.com.)
RF IN
2
C5
C24
15 pF 4.7 pF
P2-1
P2-2
C26
1 µF
R12
Jumper
C27
15 pF
R11
Jumper
R1
1 kΩ
P1
P1-1 1 VCC
2 GND
P2
P2-1 1 VREG
P2-2 2 VMODE
C13
15 pF
L4
15 nH
Board
CDMA (Korea)
Pins 1 and 9 are internally grounded to the die flag.
C30 (pF) C1 (pF)
10
4.7
L1 (nH) C14 (pF)
12
2.2
TL4
1 16 15 14 13
2
12
3
11
4
10
56789
C30
11 pF
TL3
C8
10 nF
L2
8.2 nH
C6
15 pF
C25
1 uF
P1-1
C1
TL1
4.7 pF
L1
12 nH
TL2
C7
1.5 pF
C14
2.2 pF
C3
15 pF
RF OUT
C4
15 pF
C28
10 nF
C2
4.7 uF
* L1 is a High Q inductor (i.e., Coilcraft 0805HQ-series).
**C1 and C14 are High Q capacitors (i.e., Johanson C-series).
Transmission
Line Length
CDMA (Korea)
TL1
30-40 mils
TL2
150 mils
TL3
20-30 mils
TL4
200 mils
Rev A19 010611
2-193
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