VCC1
VCC2
R292
121
F2
9
OSC
1
OSCOUT
2
CLK
7
DIN
5
DOUT
8
EN
6
FR
9
LD
11
PD
13
R
14
V
15
FV
10
FIN
4
VSS
12
VDD
16
REF
3
U81
MC145170
C167
0.1UF
R290
121
C171
0.1UF
R284
402
R398
4.12K
R287
750.0
Q4
R199
221
C65
0.1UF
+12V
A
A
VCC1
1
VCC2
14
VEE1
7
VEE2
8
OUT
3
TANK
12
BIAS
10
AGC
5
U78
MC1648
L5
2.2-3.2UH
G4
8
A
A
R420
47.5K
R423
47.5K
6
5
7
U39B
LT1013
C237
0.1UF
C67
0.1UF
C81
.01UF
R447
2.21K
R213
5.00K
CR16
OFFSET1
C70
0.1UF
R419
20.0K
R418
20.0K
C235
270PF
R421
20.0K
R422
20.0K
C236
270PF
C2
3
LD0
A
A
A
A
+5VA
R286
1.00M
B2
D2
B2
D2
10
OFFSET_IN
SCCLK
SCTD
TRI_SRD
(SYNTH1)
SYNTH_SDATA
C234
0.1UF
A
A
C66
0.1UF
U150
79L05
A
-8V
A
C166Fr
0.1UF
D2
10
(SYNTH2)
OSC
1
OSCOUT
2
CLK
7
DIN
5
DOUT
8
EN
6
FR
9
LD
11
PD
13
R
14
V
15
FV
10
FIN
4
VSS
12
VDD
16
REF
3
U82
MC145170
R293
1.00M
C170
0.1UF
C71
0.1UF
R427
20.0K
R428
20.0K
C240
270PF
R424
20.0K
R425
20.0K
C239
270PF
R426
47.5K
C2
3
LD1
A
A
A
+5VA
R431
1.50K
2
3
1
8
4
U39A
LT1013
C78
0.1UF
R429
47.5K
C241
0.1UF
R214
5.00K
R448
2.21K
C84
.01UF
CR18
OFFSET2
+12V
A
A
1
14
VEE1
7
VEE2
8
OUT
3
TANK
12
BIAS
10
AGC
5
U79
MC1648
L7
2.2-3.2UH
G4
8
A
A
R285
1.50K
C75
0.1UF
C168
0.1UF
R432
1.00K
Q14 Q15
OFFSET
(OFFSET)
A
A
A5
A5
9
A
C68
0.1UF
U149
79L05
A
-8V
R430
1.00K
C76
0.1UF
C69
0.1UF
-5V
A
A
A
C238
0.1UF
A
AM 700
FREQUENCY OFFSET
PART OF A3 DIGITAL AUDIO BOARD
7
FREQUENCY SYNTHESIZER 1
FREQUENCY SYNTHESIZER 2
CURRENT-TO-TTL CONVERTER
VCO
VCO
F COMPARATOR
F COMPARATOR
ERRIR AMPLIFIER
ERRIR AMPLIFIER