RF2948B RF Micro Devices, RF2948B Datasheet - Page 13

• Manufacturer Part Number: RF2948B
• Description: 2.4GHz SPREAD-SPECTRUM TRANSCEIVER
• Manufacturer: RF Micro Devices

Rev A6 040930
X/TX IF IN
J1
VCC
VCC
R10*
0 Ω
130 Ω
R56
P1-2
P1-3
P2-3
0 Ω
10 nF
R9
100 pF
C20
10 nF
C82
220 Ω
51 Ω
C24
R61
R1
P2-2
10 nF
C12
100 pF
P2-4
51 Ω
R62
100 pF
100 pF
C19
VCC
R11*
10 nF
C77
C76
10 nF
0 Ω
C72
C74
IF LO
CON3
J11
P1
1
2
3
CON4
GND
VCC
TX VGC
P2
1
2
3
4
10 Ω
R49
IF OUT
50 Ω µstrip
J6
GND
RX/TX EN
PD
RX VGC
P3-1
47 Ω
100 pF
R32
C73
CON2
P3
TX Upconverter
1
2
TX Mod Out
(Download Bill of Materials from www.rfmd.com.)
VCC
Evaluate
100 pF
Evaluation Board Schematic
C70
23.7k, 1%
VREF1 BUF
GND
R44
*Configured for RX Demod and
TX Cascaded Evaluation
10 nF
RX/TX EN
C69
PA OUT
Populate
TX VGC
J10
R11
R10
VCC
PD
270 kΩ
R28*
Unpopulate
R9, R61
1
2
3
4
5
6
7
8
50 Ω µstrip
R62
RX VGC
100 pF
10 Ω
R43
10 nF
32
C68
9
C65
Changes
R56 to 0
10 Ω
31
10
R27
N/A
10 kΩ
22 pF
R42
30
11
C95
50 Ω µstrip
29
12
22 nF
C58
R8*
0 Ω
28
13
50 Ω µstrip
22 nF
22 pF
C57
PA IN
C40
0 Ω
R7
J9
27
14
10 nF
C60
VCC
26
15
OUT
50 Ω µstrip
GND
RF LO
22 pF
C40
J8
25
16
IN
24
23
22
21
20
19
18
17
47 Ω
R45
C47
1 nF
0 Ω
R5
50 Ω µstrip
R6*
0 Ω
RF OUT
J7
VCC
3.9 nH
10 nF
C52
L16
C90
5 pF
22 pF
10 Ω
C54
R48
VCC
RF2948B
1 nF
C48
5 pF
C91
2.2 kΩ
27 nH
R39
C50
3 pF
L15
33 nH
L14
33 nH
L12
GND
1 nF
12 pF
C43
C44
10 Ω
R54
374 MHz
FL2
11-251
VREF1 BUF
VCC
Q OUT
I OUT
TXQ DATA
TXI DATA
J3
J2
J5
J4