RF2948B Просмотр технического описания (PDF) - RF Micro Devices
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RF2948B Datasheet PDF : 18 Pages
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RF2948B
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
VCC
R43
10 Ω
C68
100 pF
C65
10 nF
R42 C58 C57
10 kΩ 22 nF 22 nF
RX VGC
32 31 30 29 28 27 26 25
VCC
J1
X/TX IF IN
R10*
0Ω
R56
130 Ω
PD
1
24
VCC C52
C72
10 nF
R49
10 Ω
C73
100 pF
RX/TX EN 2
R44
10 nF
23
R1
C77
51 Ω 100 pF
23.7k, 1%
3
4
C76
5
100 pF
6
R61
220 Ω
R9
0Ω
VCC
C74
10 nF
J11
IF LO
R11*
0Ω
R62
51 Ω
50 Ω µstrip
R32
47 Ω
J6
IF OUT
VCC
C70
100 pF
C24
10 nF
P1-2
P1
1 GND
2 VCC
P1-3
3 TX VGC
C82
100 pF
CON3
P3
7
TX VGC 8
9
C69
R28*
10 nF 270 kΩ
10 11 12
VCC
R27
10 Ω
J10
PA OUT
50 Ω µstrip
C95
22 pF
22
21
20
S 19
18
N 17
13 14 15 16
C47
1 nF
IG C40
22 pF
S VCC
C60
10 nF
50 Ω µstrip
E C40
D22 pF
J8
RF LO
R45
47 Ω
C48
1 nF
C91
5 pF
L16
3.9 nH
C90
5 pF
R48
10 Ω
C54
22 pF
VCC
R39
2.2 kΩ
L15
27 nH
C50
3 pF
P3-1 1 VREF1 BUF
50 Ω µstrip
50 Ω µstrip
C12
10 nF
P2-2
P2-3
C20
10 nF
P2-4
C19
100 pF
2 GND
CON2
P2
1
GND
R8*
0Ω
W 2 RX/TX EN
3 PD
4 RX VGC
E CON4
*Configured for RX Demod and
TX Cascaded Evaluation
50 Ω µstrip
Evaluate Populate Unpopulate Changes
TX Mod Out
R11
R62
N/A
N TX Upconverter R10
R9, R61 R56 to 0
R7
0Ω
J9
PA IN
OUT IN
GND
R5
0Ω
R6*
0Ω
J7
RF OUT
NOT FOR
VREF1 BUF
J2
Q OUT
J3
I OUT
J4
TXQ DATA
J5
TXI DATA
L14
33 nH
R54
10 Ω
C43
1 nF
VCC
C44
12 pF
FL2
374 MHz
GND
L12
33 nH
Rev A6 040930
11-251
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