Table of Contents
Advertisement
IC Block Diagrams
IC281 < SECAM > M52325AP
BELL
ACC
OUT
2
13
CVBS
BELL
IN
AMP
ACC
16
FILTER
BELL
BELL
ref.
7
IDENT
TUNING
PLL
INTERFACE
TUNING
1
fref/
PLL
IDENT
ref.
IC501 < Vertical Output > LA7841
THERMAL
PROTECTION
LA7841
2
1
3
0.1µF
BAND
GAP
PLL
PLL
auto 2
auto 1
4
12
11
BANDGAP
PLL
DE-
SECAM
EMPHASIS
SW.
PULSE
GEN.
5
15
14
8
BGP
SAND
ID BUF.
IN
OUT
OUT
PUMP
UP
-
AMP
+
7
6
4
5
IC3401 <BBE> QBA3880AFS
GND
Vcc
3
DETR
DEFR
CTL
B-Y
10
-(B-Y)
OUTPUT
OUT
VCAR
R-Y
9
-(R-Y)
OUTPUT
OUT
R-MIX
R-OUT
6
R-IN
GND
APFR
HPFR
LPFR
BIASC
IC3071 <Audio Control > QM62420FP
20
19
AVDD
VR2
VR1
ref
1
-6-
1
2
CTL
3
VCA
VCA
4
–
LD
+
+
HI MID
5
+
+
+
+
6
7
8
+
+
+ +
9
MID
HI
LO
+
HPF
+
–
10
LPF
11
LPF
12
16
18
17
15
14
1.8K
VR4
+
-
VR6
136K SIMAMP2
200K
ref
S4
S6
S2
S8
200K
TONE
AMP2
+
-
6.5K
+
6.5K
-
ref
VOLAMP2
VOLAMP1
ref
-
6.5K
+
6.5K
-
+
TONE
AMP1
200K
S1
S7
S5
S3
ref
200K
136K
SIMAMP1
-
VR5
+
VR3
1.8K
4
2
2
3
5
6
7
24 DETL
CTL
23
22 DEFL
21 VCC
20 VCAL
19 L-MIX
18
L-OUT
L-IN
17
16
APFL
15
HPFL
14
HPF
13
LPFL
13
12
11
CONTROL
LOGIC
2
I
C BUS
INTERFACE
8
9
10
Advertisement
Table of Contents
