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參數(shù)資料
| 型號： | LV25700PM |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | AUDIO TUNER, PQFP80 |
| 封裝： | 20 X 14 MM, QIP-80 |
| 文件頁數(shù)： | 15/22頁 |
| 文件大?。?/td> | 746K |
| 代理商： | LV25700PM |
LV25700PM
No.A1709-22/68
FM/AM level Diagram
FM FE
MIX_OUT1
FM_RFDAC
FM_ANTDAC
FM_IN1
PM_IN2
RF_GND2
PM_ANT_D
VCO_GND
FM_RF
AGC
AM_IF
AGC
80
1
7
8
9
10
12
14
R10
30
Ω
R8
220k
Ω
R11A
100k
Ω
R11B
180
Ω
C57
1000pF
C11A
1000pF
L8
FM ANT
FM_ANT
GND_RF
R11C
100k
Ω
R11D
100k
Ω
C11B
1000pF
C11D
1000pF
D4
1SV251
C11E
4pF
C11C
2pF
G2
G1
FET2
3SK263
R7
30k
Ω
R80
30
Ω
C10A
1000pF
C7
1000pF
C8
0.22
μF
RF
AGC
Keyed
AGC
C10
4pF
R10A
100
Ω
C11
4pF
VCD1
FM_RF
VCD3
FM_ANT
T10
FM_RF
C10B
8pF
R13
330
Ω
C13
0.1
μF
R9A
30k
Ω
C9
1000pF
C80
0.022
μF
CF75
CF_10.7M
VCA
C2C
0.022
μF
T80
MIX_OUT2
IFT_10.7M
8V
W
AGC
N
AGC
13
11
RF AGC
Narrow AGC pick up
MIX OUT(4bit adj)
Wide AGC pick up
MIX IN (10,11pin)(4bit adj)
Keyed AGC
Controls narrow and wide AGC (4-bit adjustment)
using the S-meter (Pin 44).
MIX
Image rejection Mixer(4bit adj)
1
st IF (10.7MHz)
FM IF
10.7MHz
for
SD/SNC/HCC
/Keyed
1st IF
MIX2
10.25MHz
for
MRC/NC/
SA13:D7
FIL_VSMON
BPF
S-meter
HPF
SA10:D3
HPF_FC
IF count
SA12:D7-4
SIG_Q
level
meter
FM/AM
SD
RDS
DEMOD
SOFT
CONTROL
D/A
MOD
AFC
PLL
U.DET
S-meter
DET
DET OUT
NC IN
Q_CONT
MUTE_COUNT
73
75
70
60
59
55
64
RDS_LPF
41
S-meter(sub)
57
S-meter
44
RD_CL
30
RD_DA
29
S-meter (10.7MHz)
2
nd IF (450kHz)
BPF (40kHz to 180kHz automatic control)
Detection path
→ S-meter sub/Det out/AFC modulation index
S-meter for BPF (dedicated to filter adjustment)
IF count freq (10.7MHz)
IF Limiter AMP
Band SD
Soft Mute
RDS Decoder
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