参数资料
型号: LA1784M
元件分类: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封装: QIP-64
文件页数: 13/50页
文件大小: 568K
代理商: LA1784M
AC Characteristics Test Circuit
No. 6039-20/50
LA1784M
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
ANT
D
BUFF
AM
1ST
OSC
AGC
TRIG
GATE
HPF
FF
19<90
k
LPF
SNC
MRC
FF
19<0
FF
38k<0
FF
PHASE
COMP
VCO
TRIG
PILOT
DET
P-CAN
SUB
DEC
MA
TRIX
VCO
STOP
MAIN
HC
HCC
ANT
D
HOLE
DET
MUTE
DRIVE
AMVSM
AM SD
IF BUFF
FMVSM
FM SD
IF limiter
amplifier
DET
IF
AGC
BUFF
L.C.
OSC
BUFF
OSC
DC-C
DET
AFC
CIAMP
Q.DET
MUTE
AMP
MIX
AM/FM
MIX
RF AGC
W.B. AGC
TWEET
BUFF
AM FM
VREF
KEYED
AGC
FF
REG
FM/AM
SW
W.B.AGC
RF AGC
+
+
ANT
D
RF
AGC
FE
GND
OSC
20k
SW1
VA1
VA9
8V
VCC
VA6
10k
20pF
300pF
6800pF
0.01
F
10
F
0.015
F
0.015
F
0.01
F
0.22
F
0.47
F
1
F
B
A
SW4 (T)
1
F
AM HC
AM LEVEL
1
F
1
F
20k
3pF
100k
VR1
VR2
8V
SW9
5.6k
8200pF
0.047
F
0.022
F
10.26MHz
X TAL
5pF
1
F
0.022
F
0.022
F
0.01
F
0.47
F
1M
50k
50k
VD2
VA3
FM/AM IFBUFF.
VD4
SW5
4.3k
100k
100k
+
AM
OSC
MPX
OUT
PI.CAN ADJ
SEP.ADJ
CSB912JF108
AM/FM
S-METER
GND
SNC
HCC
NC-IN
DET OUT
FM S-METER
N.C.MPX
GND
MUTE DRIVE
0.1
F
0.47
F
0.22
F
0.022
F
2.2
F
3.3
F
1
F
15k
IF7
100
F
2200pF
AFC
IN
QD
OUT
QD
IN
V
REF
FM
SD
ADJ.
AM
LC
CHCC
PILOT
DET
MUTE
OR
ADJ
KEYED
AGC
10k
10k
22k
240k
6.8k
0.1
F
RFAGC
IF OUT
B
A
IF IN
SW3
SW2 ( i )
MIX
GND
VCC
0.022
F
0.022
F
100
H
47
F
20k
0.022
F
0.022
F
100
H
0.022
F
30
100k
620
510
1k
30
25
50
300k
0.022
F
10pF
330
FC18
ANTD
VD6
SW8
SW7
1MH
6.8MH
FM IF
IN
FM IF OUT
AM IF IN
FE IF IN
330
200
300
0.022
F
AM MIX OUT
FM WB AGCIN
AM SD ADJ
MUTE ATT
FEVCC
VCC
5pF
3pF
39pF
100k
50
10k
1M
100
100
GND
VT
0.022
F
0.022
F
1000
F
0.022
F
15pF
JIS
DUMMY
30
50
65pF
30k
RIGHT
CH.
LEFT
CH.
AM/FM
OSC
BUFF
VA2
FM
GND
FM
V
CC
SEEK
→AM/FM SD
STOP
→AM ST BUFFER
FM ST IND.
ADJ
VD1
200k
30k
VCC2
VD3
VCC2
VD5
MRC-IN
VCC
8V
VCC3
HCC
NC-IN
SNC
PG1
(AC1)
+
VCC1
5V
100k
SW6
+
AC5
+
AC1
SG1
300
50
50
+
AC3
SG3
+
AC2
SG2
A11754
3pF
0.022
F
10k
10k
VCC
VA7
8V
SW10
10
F
+
10k
1M
VA8
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