ICs for VCR
AN2492FH
Luminance and chrominance signal processing circuit for
8 mm video (NTSC)
Unit: mm
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.
48
49
12.00±0.20
10.00±0.20
33
32
(1.25)
10.00±0.20
12.00±0.20
64
17
1
0.50
16
+0.10
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)
(1.25)
0.10±0.10
0.18
−0.05
0.15
−0.05
1.95±0.20
+0.10
(1.00)
Seating plane
0° to 10°
0.50±0.20
s
Applications
•
8 mm VCR, 8 mm video camera
QFP064-P-1010
1
2
CTL1
CL in
CCL det.
ML out
CDL in
G1 det.
Y V
CC
NL in
YDL in
VNF
LNC out
ADD out
G2 det.
Video out
YCL det.
V mute CTL
Clamp det.
45
46
VF mute CTL
47
VF out
CONP C
35
L IMC
36
To CCD
41
Y GND
42
43
Line in
50
SW 1
49
48
44
40
39
37
38
34
33
31
32
30
29
28
27
AGC det.
OSD
PS
SW 4
NOR
51
GCA2
Mute
Trap
Clamp
HPF
LIM
HSS
C
SW 6
P
CONP
Sub 2
R
SW 12
SW 8
V mute
CTL
AN2492FH
SW 21
SW 19
SW 0
R
GCA1
Amp.
Clamp
s
Block Diagram
52
CONP Y
OSD
OSD
C
SW 3
AGC
Clamp
Det.
Det.
A
Clamp
Clamp
P
Test 9
REC PB VOL
P
53
AGC
det.
ATT
R
Main
LPF
SS det.
54
N
SW 5
PB
DOC
55
Sync.
SS
SS out
56
RF det.
Line
RF AGC
LIM
CORR
ATT
(d)
26
CNR
N.C.
PBY
57
FM in
58
RF out
ME NF
DOC
25
W CTL
D LIM in
BPF
P
R
SW 11
SW 18
R
SW 2
CONP
PB
P
59
MIX
D LIM
MA in
LIM
24
W/D
Smear
MOD
Chroma
DE/EM
P
SW 15
R P
SW 16
R
R
R
MDE
60
DEMOD
ME out
(COR det. out)
MDC
61
Sub
LPF
DCL in
62
DL
Line
DCL Amp.
Amp.
23
f CTL
0
22
HPF1
DEV CTL
Clip in
63
Clip
VXO
out
Sub BM
SLD
F PC
4DIV
CK
VCO
1/4
1/8
REC
AFC
1/46
1/8
64
90 PS
21
FM out (DOC)
GCA3
20
GCA3 CTL
19
CE CTL
18
Burst
DE/EM BM
ACC
P
SW 17
SW 14
P
P
VXO in
1
VXO
REC APC det.
2
REC APC
3
V
REF
det.
V
REF
DP PC
LPF
R
SW 13
CEC det.
C sub
17
PB C in
LPF
f
SC
out
4
1/4
CK PC
ACC det.
CL det.
PBA PC
CACC
LPF
Trap
HPF
GCA4
CK
f det.
1/8
15
16
10
Data
6
7
9
CK
11
C GND
13
PB C out
12
C MIX in
14
CLCA det.
ICs for VCR
5
f
det.
PB APC det.
8
CV
CC
PG in
REC C out
GCA4 CTL
ICs for VCR
s
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
VXO in
REC APC det.
V
REF
det.
f
SC
out
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
PB C in
CEC det.
Chroma emph. CTL
GCA3 CTL (APT CTL)
FM out (DOC)
DEV CTL
f
0
CTL
ME out (COR det. out)
W CTL
MENF
NL in
LNC out
CCL det.
CDL in
G1 det.
ADD out
Description
Pin No.
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
GCA1 CTL
CONP C
LIMC
To CCD
G2 det.
YDL in
YCL det.
CL in
ML out
Y GND
Video out
Y V
CC
VNF
VF mute CTL
VF out (BGP out)
V mute CTL
Clamp det.
Line in
AGC det.
CONP Y
REC PB VOL
SS det.
SS out
RF det.
FM in
RF out
DLIM in
MD E
MD C
DCL in
Clip in
VXO out
Description
AN2492FH
3
AN2492FH
s
Absolute Maximum Ratings
Parameter
Supply voltage
Supply current
Power dissipation
*2
Operating ambient temperature
*1, *3
Storage temperature
*1
Symbol
V
CC
I
CC
P
D
T
opr
T
stg
Rating
5.5
100
359
−10
to
+70
−55
to
+125
ICs for VCR
Unit
V
mA
mW
°C
°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
=
70°C) 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
Recommended Operating Range
Parameter
Supply voltage
Symbol
V
CC
Range
4.7 to 5.2
Unit
V
s
Electrical Characteristics at V
CC
=
4.8 V, T
a
=
25°C
Parameter
Consumption current 1
Consumption current 2
Consumption current 3
Consumption current 4
Internal reference voltage source
REC overall
Y-AGC control characteristics
Y-AGC through mode
View finder amp. frequency
characteristics
Video-OSD white mute level
Video-OSD black mute level
Video-OSD white mute CTL
voltage
Video-OSD black mute CTL
voltage
Video-OSD through CTL voltage
Symbol
I
CC1
I
CC2
I
CC3
I
CC4
V
REF
V
ME
∆V
AGC
V
26S
f
BA
V
OW
V
OB
V
48W
V
48B
V
48S
Conditions
Consumption current for recording
Consumption current for playback
Power save mode
Camera power save mode
Pin 3 voltage
Adjust pin 53 to set pin 47 output
at 1 V[p-p]
Pin 47 output gain ratio with input
0.5 V[p-p] and 2.0 V[p-p]
Pin 24 output at pin 50 input
Output ratio of 5 MHz/100 kHz
at input 100 kHz, 5 MHz
DC voltage based on a pedestal level
DC voltage based on a pedestal level
Pin 48 input at inserting a record
character
Pin 48 input at inserting a record
character
Pin 48 input at inserting a record
character
Min
52
58
42
−8
−14
−1.5
200
−1.5
56
−7
3.6
2.0
0
Typ
72
78
62
−4.2
2.5
−12
0
250
0
68
0
Max
92
98
82
−1
−10
1.5
Unit
mA
mA
mA
mA
V
dB
dB
300 mV[p-p]
1.5
80
12
4.8
2.6
1.0
dB
IRE
IRE
V
V
V
4
ICs for VCR
s
Electrical Characteristics at V
CC
=
4.8 V, T
a
=
25°C (continued)
Parameter
Video-OSD quasi V level
Video-OSD quasi V mute CTL
voltage
Video-OSD through CTL
voltage
Y-main-LPF frequency
characteristics 1
Y-main-LPF frequency
characteristics 2
Video amp. output amplitude
Video amp. frequency
characteristics
Symbol
V
OV
V
48V
V
48G
Df
ML1
Df
ML2
V
VO
f
VI
Conditions
Min
Typ
−50
−2
2.0
0
68
0
−20
68
0
2.0
760
AN2492FH
Max
0
4.8
1.0
2
−25
2.25
1.5
80
12
4.8
2.6
1.0
20
4.8
1.0
80
12
4.8
2.6
1.0
2.25
65
960
Unit
mV
V
V
dB
dB
V[p-p]
dB
IRE
IRE
V
V
V
mV
V
V
IRE
IRE
V
V
V
V[p-p]
mV[p-p]
ns
DC voltage difference based on sync.
−100
tip in PB mode
PB mode, pin 48 input
PB mode, pin 48 input
Input: 100 kHz, 2.5 MHz
Output: 2.5 MHz/100 kHz
Input: 100 kHz, 3.58 MHz
Output: 3.58 MHz/100 kHz
VF out 1 V[p-p] adjustment
Input: 100 kHz, 5 MHz
Output: 5 MHz/100 kHz
DC voltage based on a pedestal level
DC voltage based on a pedestal level
Pin 48
=
0 V at inserting
the display characters
Pin 48
=
0 V at inserting
the display characters
Pin 48
=
0 V at inserting
the display characters
DC voltage based on sync. tip in
PB mode
PB mode, pin 48 input
PB mode, pin 48 input
DC voltage based on a pedestal level
DC voltage based on a pedestal level
Pin 48
=
0 V at inserting
the display characters
Pin 48
=
0 V at inserting
the display characters
Pin 48
=
0 V at inserting
the display characters
Pin 48
=
0 V at inserting
the display characters
Input sync. level
Measurement of sync. delay at
pin 40 and pin 55
2.0
0
−5
1.75
−1.5
56
−7
3.6
2.0
0
−60
2.0
0
56
−7
3.6
2.0
0
1.75
560
View finder OSD white mute level V
BOW
View finder OSD black mute level V
BOB
View finder OSD white mute
CTL voltage
View finder OSD black mute
CTL voltage
View finder OSD through CTL
voltage
View finder OSD quasi V level
View finder OSD quasi V mute
CLT voltage
View finder OSD through CTL
voltage
PB OSD white mute level
PB OSD black mute level
PB OSD white mute CTL
voltage
PB OSD black mute CTL
voltage
PB OSD through CTL voltage
PB OSD off
Sync. separation min. input
sensitivity
Sync. separation pulse delay
amount
V
46W
V
46B
V
46S
V
BOV
V
B48V
V
B48S
V
POW
V
POB
V
46W
V
46B
V
46S
V
VOO
V
SS
t
SS
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
