KA2198BD
RGB ENCODER FOR PAL/NTSC
RGB ENCODER FOR PAL/NTSC
The KA2198BD is a monolithic circuit designed for RGB
encoder of video system. This device provides encoding
system of PAL and NTSC video signal. The KA2198BD
contains matrix of R-Y/B-Y, modulator, pulse generator,
regulator, built in BPF of chroma and delay line of lumin-
ance, Y/C output using S-VHS system. It is suitable for
video equipment.
24-SOP-300
FUNCTIONS
•
Regulator
•
Mixer of R-Y, B-Y
•
Modulator
•
Pulse generator (ECL circuit)
•
Audio buffer
•
Clamp circuit
•
Y-TRAP filter
•
BPF & D.L circuit
•
Y/C output driver
ORDERING INFORMATION
Device
Package Operating Temperature
KA2198BD 24-SOP-300
-20°C~+65°C
FEATURES
•
Lower operating voltage : V
CC
= 5V
•
Stabilized bias condition in regulator
•
Abailable PAL/NTSC system
•
Included 75 ohm driver ( RGB output, composite video output, Y/C output)
•
External fsc ( color sub-carrier)
•
Include BPF & delay line
•
Audio buffer circuit
•
R-Y, B-Y modulator
•
Available S-VHS
•
High frequency response of luminance
BLOCK DIAGRAM
24
22
22
21
20
19
18
Y/C
MIXER
17
16
Y OUT
15
C OUT
14
13
Vref
R
, G
, B
O
U
T
P
U
T
VIDEO
OUTPUT
D.L
BPF
SYNC. ADDER
MATRIX
R-Y MODULATOR
C
A
M
P
B-Y MODULATOR
PHASE
CONTROL
R,G,B CLAMP
A
B
U
U
D
F
F
I O
E
R
SYNC. IN
1
2
3
4
5
6
7
8
9
10
11
12
KA2198BD
PIN CONFIGURATION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
(note)
DESCRIPTION
GND1
R INPUT
G INPUT
B INPUT
N.C
fsc INPUT
NTSC/PAL SW
AUDIO IN
AUDIO OUT
COMPOSITE SYNC. IN
N.C
VCC1
RGB ENCODER FOR PAL/NTSC
Pin No.
13
14
15
16
17
18
19
20
21
22
23
24
DESCRIPTION
N.C
2V REGULATOR
C.OUT
Y OUT
Y-TRAP FILTER
N.C
VCC2
COMPOSITE VIDEO OUTPUT
B OUTPUT
G OUTPUT
R OUTPUT
GND2
V
CC
1, GND1 : except output stage
V
CC
2, GND2 : output stage supply voltage
ABSOLUTE MAXIMUM RATINGS
(T
A
=25°C)
Characteristics
MAX Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
CCMAX
P
D
T
OPR
T
STG
Value
10
1250
-20~+70
-55~+150
Unit
V
mW
°C
°C
ELECTRICAL CHARACTERISTICS
(T
A
=25°C,V
CC
=5V)
Characteristics
Supply Current 1
Supply Current 2
R Output Voltage
G Output Voltage
B Output Voltage
R Frequency Response
G Frequency Response
B Frequency Response
Y Frequency Response
R 100% Y Level
Ratio(CVBS)
G 100% Y Level
Ratio(CVBS)
B 100% Y Level
Ratio(CVBS)
Symbol
I
CC
1
I
CC
2
V
OR
V
OG
V
OB
R
FC
G
FC
B
FC
Y
FCN
V
YR
1
V
YG
1
V
YB
1
Test Conditions
No signal input
R,G,B input signals
Vin=1.0 V
P-P
, f=200KHz
R,G,B input signals
Vin=1.0 V
P-P
, f=200KHz
(-3dB point)
Y OUT (-3dB point)
R,G,B input signals
Vin=1.0 V
P-P
(100% R,G,B / 100% Y)
Min
25
5.0
0.64
0.64
0.64
5.0
5.0
5.0
6.0
0.19
0.38
0.07
Typ
39
11
0.71
0.71
0.71
-
-
-
-
0.21
0.42
0.08
Max
49
16
0.78
0.78
0.78
-
-
-
-
0.25
0.48
0.09
Unit
mA
mA
V
P-P
V
P-P
V
P-P
MHz
MHz
MHz
MHz
-
-
-
KA2198BD
RGB ENCODER FOR PAL/NTSC
Characteristics
100% Y Level ( CVBS )
Sync. Level 1 ( CVBS )
R 100% Y Level Ratio (Y OUT)
G 100% Y Level Ratio (Y OUT)
B 100% Y Level Ratio (Y OUT)
100% Y Level (Y OUT)
Sync. Level 1 (Y OUT)
Audio Buffer Gain
Audio Frequency Response
Audio Distortion
NTSC mode
R Chroma Ratio 1 (CVBS)
G Chroma Ratio 1 (CVBS)
B Chroma Ratio 1 (CVBS)
Burst level 1 (CVBS)
R Chroma Ratio 2 (C OUT)
G Chroma Ratio 2 (C OUT)
B Chroma Ratio 2 (C OUT)
Burst level 2 (C OUT)
R Phase (CVBS)
G Phase (CVBS)
B Phase (CVBS)
Burst Width
Burst Position
Carrier Leakage
PAL mode
R Chroma Ratio 3 (CVBS)
G Chroma Ratio 3 (CVBS)
B Chroma Ratio 3 (CVBS)
Burst level 3 (CVBS)
R Chroma Ratio 4 (C OUT)
G Chroma Ratio 4 (C OUT)
B Chroma Ratio 4 (C OUT)
Burst level 4 (CVBS)
R Phase (CVBS)
G Phase (CVBS)
B Phase (CVBS)
Burst Width
Burst Position
PAL Burst Phase 1
PAL Burst Phase 2
Y Frequency Response
Symbol
V
YW1
V
SNC1
V
YR2
V
YG2
V
YB2
V
YW2
V
SNC2
Ga
Fa
THD
R/B1
G/B1
B/B1
Vob1
R/B2
G/B2
B/B2
Vob2
SR
N
SG
N
SB
N
T
WN
T
PN
CL
R/B3
G/B3
B/B3
Vob3
R/B4
G/B4
B/B4
Vob4
SR
P
SG
P
SB
P
T
WP
T
PP
P1
P2
Y
FCP
Test Conditions
Min
0.64
0.26
0.19
0.38
0.07
0.64
0.26
-1.0
30
-
2.70
2.55
1.90
0.20
2.70
2.55
1.90
0.20
94
231
337
2.5
0.45
-
2.70
2.55
1.90
0.20
2.80
2.65
2.01
0.20
94
231
337
2.0
0.35
125
215
6.0
Typ
0.71
0.29
0.21
0.42
0.08
0.71
0.29
1.0
-
-
3.15
2.95
2.24
0.29
3.15
2.95
2.24
0.29
104
241
347
2.75
0.5
-
3.15
2.95
2.24
0.29
3.15
2.95
2.24
0.29
104
241
347
2.25
0.45
135
225
-
Max
0.82
0.33
0.25
0.48
0.09
0.82
0.33
1.1
-
1.0
3.50
3.25
2.47
0.34
3.50
3.25
2.47
0.34
114
251
357
3.6
0.75
0.03
3.50
3.25
2.47
0.34
3.50
3.25
2.47
0.34
114
251
357
2.5
0.55
145
235
-
Unit
V
P-P
V
P-P
-
-
-
V
P-P
V
P-P
dB
KHz
%
-
-
-
V
P-P
-
-
-
V
P-P
deg
deg
deg
usec
usec
V
P-P
-
-
-
V
P-P
-
-
-
V
P-P
deg
deg
deg
usec
usec
deg
deg
MHz
R,G,B input signal
Vin=1.0V
P-P
(100% R,G,B / 100% Y)
Audio Input
100KHz, 1V
P-P
fsc input 3.58MHz, 400mV
P-P
( check CVBS out )
fsc input 3.58MHz, 400mV
P-P
( check C out )
fsc input 3.58MHz, 400mV
P-P
( check CVBS out )
CVBS out, Y out
fsc input 3.58MHz, 400mV
P-P
( check CVBS out )
fsc input 3.58MHz, 400mV
P-P
( check C out )
fsc input 3.58MHz, 400mV
P-P
( check CVBS out )
CVBS out, Y out
Y output (-3dB point)
KA2198BD
APPLICATION CIRCUIT
R
OUT
G
B
OUT OUT
CVBS
OUT
RGB ENCODER FOR PAL/NTSC
Y OUT C OUT
ì
0.01¥ F
+
75
¥ Ø
75
¥ Ø
75
¥ Ø
75
¥ Ø
*L
ì
ì
ì
470¥ F 470¥ F 470¥ F 470¥ F
ì
470¥ F 470¥
ì
ì
F
Vcc (5V)
100¥
ì
F
75
¥ Ø
75
¥ Ø
10¥
ì
F
+
24
23
+
22
+
21
+
n.c
*C
+
16
+
15
+
n.c
20
19
18
17
14
13
KA2198BD
1
2
3
4
5
n.c
6
7
8
9
10
11
n.c
12
Vcc (NTSC)
GND (PAL)
ì
ì
0.1¥ F 0.1¥ F 0.1¥ F
ì
AUDIO
OUT
R
IN
G
IN
B
IN
fsc in
AUDIO
IN
C.SYNC
IN
0.3 ~5.7Vpp
3.58MHz(NTSC), 4.43 MHz(PAL)
SYSTEM
NTST
PAL
Fo(MHz)
3.57
4.43
HL(uH)
100
82
HC(pF)
20
15
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