RF25A-12 데이터 시트보기 (PDF) - Conexant Systems
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RF25A-12 Datasheet PDF : 17 Pages
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Rx ASIC
RF25A
FROM RF IMAGE
FILTER OUTPUT
50 ohms
TO RF IMAGE
FILTER INPUT
RX_VCC
1000 pF
3.3 pF
10
6.8 nH
33 pF
180 nH
18 pF
1.5 nH
1 nF
1 nF
800_LNA_IN
RX_VCC
FM
50 ohms
10
1K
33 pF
180 1000 pF
RX_VCC
220 pF
5.1
5.1
1000 pF
NC 1
LNA_DECOUPLE
2
NC
3
LNA_IN
4
VCC1
5
BIAS_SET
6
FM_CDMA
7
VCC2
8
GND
9
TANK–
10
TANK+
11
RF25A
56 nH
33 pF
4700 pF 4700 pF
5.1
5.1
A1 A2
56 nH
33 pF
RX_TUNE
DNI
2K
RXPLL+
1SV306
C1 C2
RXPLL–
1000 pF
DNI
1000 pF
33 pF
33 pF
DNI
390 nH
1K
3900 pF
10
RX_VCC
0.1 µF
50 ohms
RX_LO_800
39 nH
1.5 K
33 pF
RX_VCC
RX_VCC
0.1 µF
DNI
31 NC
NC
30
AMPS_IF_OUT
29
CDMA_IF_OUT–
28
CDMA_IF_OUT+
27
MIX_BYPASS
26
VGA_AMPS_IN
25
VGA_CDMA_IN–
24
VGA_CDMA_IN+
23
VCC3
22
VGA_CONTROL
21
39 nH
1.5 K
DNI
33 pF
RX_VCC
0.1 µF
3900 pF
3900 pF
3900 pF
TO AMPS IF SAW INPUT
TO CDMA
IF SAW INPUT
FROM AMPS IF SAW OUTPUT
FROM CDMA
IF SAW OUTPUT
DNI
33 pF
4.7 nF
0.1 µF
0.1 µF
1000 pF
10
1000 pF
1K
3900 pF
1K
0
0
0
0
RX_VCC
RX_AGC_ADJ
SLEEP
RXQ–
RXQ+
RXI–
RXI+
NOTES:
1. COMPONENT VALUES MAY CHANGE
2. DNI = DO NOT INSTALL
Figure 20. RF25A Schematic Diagram
101110A
Conexant – Preliminary
13
August 4, 2000
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