tda9725 NXP Semiconductors, tda9725 Datasheet - Page 3
![no-image](/images/manufacturer_photos/0/4/487/nxp_semiconductors_sml.jpg)
tda9725
Manufacturer Part Number
tda9725
Description
Y/c Automatic Adjustment Processor Vhs Standard
Manufacturer
NXP Semiconductors
Datasheet
1.TDA9725.pdf
(44 pages)
- Current page: 3 of 44
- Download datasheet (217Kb)
Philips Semiconductors
BLOCK DIAGRAM
1996 Oct 14
handbook, full pagewidth
Y/C automatic adjustment processor
(VHS standard)
(1) Low leakage current.
All capacitors for loop filter 10%; all other capacitors +10%/ 50%; all resistors 5%; all inductors 10%; unless otherwise specified.
LPNC
PCTL
1
52
1.3
k
CDEV
nF
47
GND(Y)
1.6 V
2
EDIT
(1)
51
4.7
10
F
C CCD
F
50 k
TP2
25 k
50
3
NFB
VTC
49
4
DEVIATION/PLAYBACK
270
1 nF
SQPB
5%
1 k
CLAMP
ME
EDIT
EDIT
1HDL
CCD
AGC
CCD
2
DETECTOR
VFC
48
SQPB
1 F
5
MEO
50 k
CANCELLER
to CLP3
C CLP3
W/DC
PICTURE
PROCESSOR
47
CLPB
CLAMP
YNR
NOISE
6
to pin 6
1
1
YNR
nF
22
46
C SS
Fig.1 Block diagram (continued in Fig.2).
22 nF
0.1 F
MODULATOR
REC
DOP
PB
DEVIATION
C F0E
CONTROL
7
SEPARATOR
CLAMP
MIXER
45
SYNC
SYNC
3
YNR
1.5 k
HSS
4.7 F
PB
8
MDEC
peaking
470
DETECTOR
680 pF
FM DEMODULATOR
5%
MIXER
C AGC
CLPA
3
AGC
Y/C
REC
44
SUBLPF
DTE
NLE
43
CVBSI
AGC
SQPB
REC
PB
4.7 F
9
MDEB
1.5 k
NLDE
YLPF
to BPF 4.43
PROCESSOR
SCL
0.1
REC
F
f 0
LPF
PB
10
V CC(FM)
REC
PB
1 k
k
50
2.5 dB
DOUBLE
LIMITER
PB
CHI
PB
FMO
42
11
CHARACTER
INSERT
CVBSO
NOISE
CLIP
50 k
41
DETECTOR
ENVELOPE
DETECTOR
DROP-OUT
PTR
12
Product specification
0.1
F
A
pin 14
HIGH
TDA9725
0.01
F
40
TDA9725
AGC
FMI
FM
V CC(Y)
13
22
GATE
C FMA
H
14
MGB694
0.33
DOP
10
F
F
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