ICs for VCR
1
AN2492FH
Luminance and chrominance signal processing circuit for
8 mm video (NTSC)
s
Overview
The AN2492FH is a single chip LSI on which Y/C
main signal processing circuit of NTSC normal 8 mm
VCR is integrated. It is possible to reduce the system
cost drastically thanks to the introduction of an external
filter on to the chip and fc auto adjustment.
s
Features
5 V single power supply
Reduction of the external components and adjusting
parts by adopting automatic adjustment filter
No need of glass delay lines
For NTSC (PAL: AN2493 pin-compatible)
s
Applications
8 mm VCR, 8 mm video camera
QFP064-P-1010
Unit: mm
10.00
0.20
48
33
32
17
16
1
64
49
12.00
0.20
10.00
0.20
0.10
0.10
12.00
0.20
1.95
0.20
(1.25)
(1.25)
0.50
0.18
+
0.10
-
0.05
0.15
+
0.10
-
0.05
Seating plane
(1.00)
0.50
0.20
0
to 10
AN2492FH
ICs for VCR
2
s
Block Diagram
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
50
49
14
15
16
13
12
11
10
9
8
7
6
5
f
det.
PB APC det.
PG in
C V
CC
CK
Data
C GND
C MIX in
PB C out
CLCA det.
REC C out
GCA4 CTL
NL in
LNC out
ADD out
CONP C
L IMC
To CCD
G2 det.
YCL det.
YDL in
Y GND
VNF
VF mute CTL
V mute CTL
Clamp det.
Line in
VF out
Video out
Y V
CC
CL in
ML out
CTL1
CCL det.
CDL in
G1 det.
V
REF
VXO
1/4
1/8
f det.
REC APC
RF A
G
C
90 PS
DP PC
DEMOD
D LIM
F PC
SLD
VCO
Sub BM
1/4
1/46
1/8
1/8
CL det.
GCA4
GCA3
GCA2
GCA1
Tr
a
p
CA
CC
HPF1
HPF
LPF
LPF
AC
C
BM
BPF
HPF
LIM
HSS
AT
T
Amp.
LIM
CORR
Main LPF
Sync.
MIX
Det.
Det.
Clamp
Clamp
Clamp
Clamp
Tr
a
p
Mute
CNR
MOD
W/D
Smear
N.C.
A
CC det.
REC AFC
C sub LPF
Burst DE/EM
Chroma DE/EM
4DIV
CK
DL
DOC
AT
T
AG
C
OSD
OSD
OSD
Clamp
SS
CK PC
PB
A PC
DCL Amp.
Amp.
Sub LPF
AG
C
det.
MA in LIM
Clip
4
3
2
1
64
63
62
61
60
59
58
57
56
55
54
53
52
51
26
25
24
23
22
21
20
19
18
17
VXO in
VXO
out
REC APC
det.
Clip in
DCL in
MDC
MDE
D LIM in
RF out
FM in
RF det.
SS out
SS det.
REC PB
V
O
L
CONP Y
A
GC det.
V
REF
det.
f
SC
out
f
0
CTL
PB C in
CEC det.
CE CTL
GCA3 CTL
DEV CTL
ME out (COR det. out)
W CTL
ME NF
FM out (DOC)
SW 19
SW 21
SW 0
SW 1
SW 3
SW 4
R
P
T
est 9
C
NOR
PS
N
DOC
CONP
SW 6
SW 5
Line
PBY
P
R
SW 11
SW 8
SW 12
V mute
CTL
R
P
(d)
Sub 2
C
A
PB
PR
CK
SW 13
SW 14
SW 17
P
P
P
P
P
P
R
R
R
R
R
R
SW 15
SW 16
SW 18
SW 2
Line
CONP
PB
ICs for VCR
AN2492FH
3
Pin No.
Description
1
VXO in
2
REC APC det.
3
V
REF
det.
4
f
SC
out
5
f det.
6
PB APC det.
7
PG in.
8
C V
CC
9
CK
10
Data
11
C GND
12
C MIX in
13
PB C out
14
CLCA det.
15
REC C out
16
GCA4 CTL
17
PB C in
18
CEC det.
19
Chroma emph. CTL
20
GCA3 CTL (APT CTL)
21
FM out (DOC)
22
DEV CTL
23
f
0
CTL
24
ME out (COR det. out)
25
W CTL
26
MENF
27
NL in
28
LNC out
29
CCL det.
30
CDL in
31
G1 det.
32
ADD out
Pin No.
Description
33
GCA1 CTL
34
CONP C
35
LIMC
36
To CCD
37
G2 det.
38
YDL in
39
YCL det.
40
CL in
41
ML out
42
Y GND
43
Video out
44
Y V
CC
45
VNF
46
VF mute CTL
47
VF out (BGP out)
48
V mute CTL
49
Clamp det.
50
Line in
51
AGC det.
52
CONP Y
53
REC PB VOL
54
SS det.
55
SS out
56
RF det.
57
FM in
58
RF out
59
DLIM in
60
MD E
61
MD C
62
DCL in
63
Clip in
64
VXO out
s
Pin Descriptions
AN2492FH
ICs for VCR
4
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Consumption current 1
I
CC1
Consumption current for recording
52
72
92
mA
Consumption current 2
I
CC2
Consumption current for playback
58
78
98
mA
Consumption current 3
I
CC3
Power save mode
42
62
82
mA
Consumption current 4
I
CC4
Camera power save mode
-
8
-
4.2
-
1
mA
Internal reference voltage source
V
REF
Pin 3 voltage
2.5
V
REC overall
V
ME
Adjust pin 53 to set pin 47 output
-
14
-
12
-
10
dB
at 1 V[p-p]
Y-AGC control characteristics
V
AGC
Pin 47 output gain ratio with input
-
1.5
0
1.5
dB
0.5 V[p-p] and 2.0 V[p-p]
Y-AGC through mode
V
26S
Pin 24 output at pin 50 input
200
250
300
mV[p-p]
View finder amp. frequency
f
BA
Output ratio of 5 MHz/100 kHz
-
1.5
0
1.5
dB
characteristics
at input 100 kHz, 5 MHz
Video-OSD white mute level
V
OW
DC voltage based on a pedestal level
56
68
80
IRE
Video-OSD black mute level
V
OB
DC voltage based on a pedestal level
-
7
0
12
IRE
Video-OSD white mute CTL
V
48W
Pin 48 input at inserting a record
3.6
4.8
V
voltage
character
Video-OSD black mute CTL
V
48B
Pin 48 input at inserting a record
2.0
2.6
V
voltage
character
Video-OSD through CTL voltage
V
48S
Pin 48 input at inserting a record
0
1.0
V
character
s
Absolute Maximum Ratings
Parameter
Symbol
Range
Unit
Supply voltage
V
CC
4.7 to 5.2
V
s
Recommended Operating Range
Parameter
Symbol
Rating
Unit
Supply voltage
V
CC
5.5
V
Supply current
I
CC
100
mA
Power dissipation
*2
P
D
359
mW
Operating ambient temperature
*1,
*3
T
opr
-
10 to
+
70
C
Storage temperature
*1
T
stg
-
55 to
+
125
C
Note) *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for T
a
=
25
C.
*2: The power dissipation shown is for the IC package at T
a
=
70
C.
P
D
=
696 (mW) (T
a
=
70C) in mounting on the glass epoxy printed circuit board of 50
50
0.8 (mm).
*3: P
D
=
471 (mW) at supply voltage V
CC
=
4.8 V.
s
Electrical Characteristics at V
CC
=
4.8 V, T
a
=
25
C
ICs for VCR
AN2492FH
5
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Video-OSD quasi V level
V
OV
DC voltage difference based on sync.
-
100
-
50
0
mV
tip in PB mode
Video-OSD quasi V mute CTL
V
48V
PB mode, pin 48 input
2.0
4.8
V
voltage
Video-OSD through CTL
V
48G
PB mode, pin 48 input
0
1.0
V
voltage
Y-main-LPF frequency
Df
ML1
Input: 100 kHz, 2.5 MHz
-
5
-
2
2
dB
characteristics 1
Output: 2.5 MHz/100 kHz
Y-main-LPF frequency
Df
ML2
Input: 100 kHz, 3.58 MHz
-
25
dB
characteristics 2
Output: 3.58 MHz/100 kHz
Video amp. output amplitude
V
VO
VF out 1 V[p-p] adjustment
1.75
2.0
2.25
V[p-p]
Video amp. frequency
f
VI
Input: 100 kHz, 5 MHz
-
1.5
0
1.5
dB
characteristics
Output: 5 MHz/100 kHz
View finder OSD white mute level V
BOW
DC voltage based on a pedestal level
56
68
80
IRE
View finder OSD black mute level
V
BOB
DC voltage based on a pedestal level
-
7
0
12
IRE
View finder OSD white mute
V
46W
Pin 48
=
0 V at inserting
3.6
4.8
V
CTL voltage
the display characters
View finder OSD black mute
V
46B
Pin 48
=
0 V at inserting
2.0
2.6
V
CTL voltage
the display characters
View finder OSD through CTL
V
46S
Pin 48
=
0 V at inserting
0
1.0
V
voltage
the display characters
View finder OSD quasi V level
V
BOV
DC voltage based on sync. tip in
-
60
-
20
20
mV
PB mode
View finder OSD quasi V mute
V
B48V
PB mode, pin 48 input
2.0
4.8
V
CLT voltage
View finder OSD through CTL
V
B48S
PB mode, pin 48 input
0
1.0
V
voltage
PB OSD white mute level
V
POW
DC voltage based on a pedestal level
56
68
80
IRE
PB OSD black mute level
V
POB
DC voltage based on a pedestal level
-
7
0
12
IRE
PB OSD white mute CTL
V
46W
Pin 48
=
0 V at inserting
3.6
4.8
V
voltage
the display characters
PB OSD black mute CTL
V
46B
Pin 48
=
0 V at inserting
2.0
2.6
V
voltage
the display characters
PB OSD through CTL voltage
V
46S
Pin 48
=
0 V at inserting
0
1.0
V
the display characters
PB OSD off
V
VOO
Pin 48
=
0 V at inserting
1.75
2.0
2.25
V[p-p]
the display characters
Sync. separation min. input
V
SS
Input sync. level
65
mV[p-p]
sensitivity
Sync. separation pulse delay
t
SS
Measurement of sync. delay at
560
760
960
ns
amount
pin 40 and pin 55
s
Electrical Characteristics at V
CC
=
4.8 V, T
a
=
25
C (continued)
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