ICs for VCR
1
AN3479FBP
VCR Signal(Luminance, Chroma and Normal Audio Signals) Process-
ing IC
s
Overview
The AN3479FBP is an IC designed for NTSC-dedicated
VHS VCR signal processing and incorporates circuits for
processing RF and normal audio signals as well as lumi-
nance and chroma signals.
s
Features
Compatible with I
2
C-bus
Totally free of adjustments
Low-frequency comb system
An improved chroma S/N ratio ensured by built-in CNR
and CPC(chroma phase compensator) circuits
Compatible with SQPB
s
Applications
VCR(NTSC)
21.20.2
18.00.2
21.20.2
0.10.1
0.10.1
3.250.2
1.550.1
1.550.1
18.00.2
63
43
1
21
22
42
84
64
(1.0)
0.60.2
0.35
+0.1
0.05
0.15
+0.1
0.05
Seating plane
0.80
0.60.2
0
to 10
0.15
+0.10
0.05
QFH084-P-1818B
Unit:mm
AN3479FBP
ICs for VCR
4
Parameter
Symbol
Range
Unit
Supply voltage
V
CC
4.7
5.3
V
s
Recommended Operating Range
Note) *1 : T
a
=
25
C except operating ambient temperature and storage temperature.
*2 : Power dissipation of the package at T
a
=
70
C.
s
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply voltage
V
CC
5.5
V
Supply current
I
CC
222
mA
Power dissipation
*2
P
D
958
mW
Operating ambient temperature
*1
T
opr
-
20
+
70
C
Storage temperature
*1
T
stg
-
55
+
150
C
s
Pin Descriptions(continued)
Pin No.
Descriptions
Impedance
67
NA REC EQ LP/SLP SW
SP : 100 k
LP/SLP :
Push-pull
68
NA V
CC
69
NA Line Out
Push-pull
70
NA AGC Det
222
+
E.F.
71
NA Tuner In
30 k
72
NA V
REF
25 k
73
NA Line In
30 k
74
VCO Gnd
Pin No.
Descriptions
Impedance
75
NA Mute
211 k
76
REC C Adj
200 k
77
C Gnd
78
REC AFC/PB APC Det
Collector base
79
2f
SC
Out/fsc Out
Push-pull
80
Side Lock Det
C.C.
81
XO/VCXO Out
Push-pull
82
XO/VCXO In
1 900
83
REC Y Adj.
105 k
84
REC APC Det
Collector base
ICs for VCR
AN3479FBP
5
s
Electrical Characteristics
T
a
=
25
C
2
C
Parameter
Symbol
Conditions
min.
typ.
max.
Unit
Circuit current 1
I
REC
V
CC
=
5 V,Rec.- mode
116
140
175
mA
Circuit current 2
I
PB
V
CC
=
5 V,PB-mode
125
150
188
mA
Acknowledge output driver current
I
ACK
V
CC
=
5 V
1.8
2.5
5.0
mA
SCL, SDA signals input "H"level
V
SHI
V
CC
=
5 V
3.1
5.0
V
SCL, SDA signals input "L"level
V
SLO
V
CC
=
5 V
0
0.9
V
SCL clock frequency
f
SCL
V
CC
=
5 V
100
kHz
Video EE output amplitude
V
EE
Video(W
-
100 %),1 V
PP
1.995 2.100 2.205
V
PP
In : Pin18,Out : Pin25
Y tuner/line 1 crosstalk
CT
TL1
Sin 100 mV
PP
,1 MHz
-
45
dB
In : Pin18,Out : Pin25
Y line 2/line 1 crosstalk
CT
L2L1
Sin 100 mV
PP
,1 MHz
-
45
dB
In : Pin18,Out : Pin25
Y tuner/line 2 crosstalk
CT
TL2
Sin 100 mV
PP
,1 MHz
-
45
dB
In : Pin16,Out : Pin25
Y line 1/line 2 crosstalk
CT
L1L2
Sin 100 mV
PP
,1 MHz
-
45
dB
In : Pin16,Out : Pin25
Y line 1/tuner crosstalk
CT
L1L
Sin 100 mV
PP
,1 MHz
-
45
dB
In : Pin20,Out : Pin25
Y line 2/tuner crosstalk
CT
L2T
Sin 100 mV
PP
,1 MHz
-
45
dB
In : Pin20,Out : Pin25
Keyed AGC control sensitivity
S
KAGC
Video(W
-
100 %),2.0 V
PP
/0.5 V
PP
1.0
dB
In : Pin18,Out : Pin25
Y AGC frequency characteristic
G
AGC
Sin 100 mV
PP
,5 MHz/1 MHz
-
1.5
0.5
dB
In : Pin18,Out : Pin25
Y MLPF frequency
G
YL1
Sin 100 mV
PP
,2.7 MHz/320 kHz
-
7.8
-
6.3
-
4.8
dB
characteristic 1
In : Pin18,Out : Pin5
Y MLPF frequency
G
YL2
Sin 100 mV
PP
,3.58 MHz/320 kHz
-
29
dB
characteristic 2
In : Pin18,Out : Pin5
Y MLPF group delay 1
t
DYL1
Sin 100 mV
PP
,320 kHz
970
1 050 1 130
ns
In : Pin18,Out : Pin5
Y MLPF group delay 2
t
DYL2
Sin 100 mV
PP
,1.8 MHz
-
100
-
70
-
40
ns
In : Pin18,Out : Pin5
Sync.-sepa. min. input
S
SS
Video(W
-
100 %)
33
%
sensitivity
In : Pin18,Out : Pin14
Sync.-sepa. front edge delay
t
DSS
Video(W
-
100 %),1 V
PP
1.6
1.8
2.0
s
In : Pin18,Out : Pin14
Sync.-sepa. output amplitude
V
SS
Video(W
-
100 %),1 V
PP
,LP-mode
4.0
V
PP
In : Pin18,Out : Pin14
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