KA2197D RGB ENCODER FOR NTSC
24-SOP
RGB ENCODER
The KA2197 is a monolithic integrated circuit designed
for RGB encoder of video system. This device contains
matrix of R-Y/B-Y, modulator, pulse generator, regulator
and built in BPF of chroma and delay line of luminance
and Y/C output using S-VHS system.
The KA2197D is suitable for video equipment.
FUNCTIONS
• Regulator
• Mixer of R-Y, B-Y
• Modulator
• Pulse generator
• Audio buffer
• X-tal oscillator
• Clamp circuit
• BPF & D.L circuit
• Y/C output
BLOCK DIAGRAM
24 23
22 21
20 19 18 17 16 15
R
G
R,G,B OUTPUT
B
VIDEO
OUTPUT
MATRIX
ORDERING INFORMATION
Device Package Operating Temperature
KA2197D 24SOP
Y/C
MIXER
R-Y MODULATOR
B-Y MODULATOR
DL &
TRAP
C OUTY OUT
3.58M
BPF
+
-20°C ~+70°C
14
REGULATOR
13
SYNC
ADD
R,G,B CLAMP
R
1
2
G B
3
4
X-TAL
OSC.
5
PHASE
SHIFTER
6 8
7
PULSE
GEN.
BUFFER
9 10 11 12
SYNC
OUT
KA2197D RGB ENCODER FOR NTSC
PIN CONFIGURATION
Pin No. DESCRIPTION Pin NO DESCRIPTION
1 GND 1 13 REGULATOR CURRENT SINK
2 RED INPUT 14 2V REGULATOR OUTPUT
3 GREEN INPUT 15 C OUT
4 BLUE INPUT 16 Y OUT
5 X-TAL OUT 17 N.C
6 X-TAL IN 18 N.C
7 N.C 19 VCC 2
8 AUDIO IN 20 COMPOSITE VIDEO OUTPUT
9 AUDIO OUT 21 BLUE OUTPUT
10 COMPOSITE SYNC INPUT 22 GREEN OUTPUT
11 COMPOSITE SYNC OUTPUT 23 RED OUTPUT
12 VCC 1 24 GND 2
* VCC 1, GND 1 : EXCEPT OUTPUT STAGE
* VCC 2, GND 2 : OUTPUT STAGE
ABSOLUTE MAXIMUM RATINGS (TA=25°C)
Characteristic Symbol Value Unit
Supply Voltage V
Power dissipation P
Operating Temperature T
Storage Temperature T
CC
D
OPR
STG
ELECTRICAL CHARACTERISTICS(TA=25°C, VCC=5V)
Characteristic Symbol Test Condition Min Typ Max Unit
Supply Current 1 I
Supply Current 2 I
R Output Voltage V
G Output Voltage V
B Output Voltage V
R Frequency Response f
G Frequency Response f
B Frequency Response f
Sync. Level V
R 100% Y Level V
G 100% Y Level V
B 100% Y Level V
CC1
CC2
O
O
O
C
C
C
OS
O
O
O
No Signal input 29 39 49 mA
No Signal input 6.0 11 16 mA
R
=1 V
IN
P-P
GIN =1 V
BIN =1 V
P-P
P-P
R, G, B f = 200 KHz 5 - - MHz
-dB POINT 5 - - MHz
Condition:R, G, B and 0.26 0.29 0.33 V
C Sync. input 0.19 0.21 0.25 V
Measure Composite 0.38 0.42 0.48 V
Video Output 0.07 0.08 0.09 V
10 V
1250 mW
-20~+70
-55~+150
0.64 0.71 0.78 V
0.64 0.71 0.78 V
0.64 0.71 0.78 V
5 - - MHz
°C
°C
P-P
P-P
P-P
KA2197D RGB ENCODER FOR NTSC
Characteristic Symbol Test Conditions Min Typ Max Unit
While 100% Y level V
O
Differiential Gain DG Composite Video - - 3.0 %
Differiential Phase DP Output - - 3.0 deg
Burst Level V
OB
R Chroma Ratio R/BN 2.8 3.15 3.5 times
G Chroma Ratio G/BN 2.65 2.95 3.25 times
B Chroma Ratio B/BN 2.01 2.24 2.57 times
R Phase SR 94 104 114 deg
G Phase SG 231 241 251 deg
B Phase SB 337 347 357 deg
Burst Width T
Burst Position T
WB
DB
Carrier Leakage VI - - 30 mV
C Sync. Output Level V
Audio Buffer Gain G
Audio Freq. Response F
Audio Distortion THD 1V
OS
1V
A
A
, f=1KHz -1.0 0 1.0 dB
P-P
-3dB 30 - - KHz
, f=1KHz - - 1.0 %
P-P
Sync. Level Y(CS) Y OUTPUT 0.26 0.29 0.33 V
R 100% Y Level Y(R) 0.19 0.21 0.25 V
G 100% Y Level Y(G) 0.38 0.42 0.48 V
B 100% Y Level
White 100% Y Level
Y(B)
Y(W)
Burst Level C(BN) C OUTPUT 0.22 0.29 0.34 V
R Chroma ratio C(R/BN) 2.80 3.15 3.50 time
G Chroma ratio C(G/BN) 2.65 2.95 3.25 time
B Chroma ratio C(B/BN) 2.01 2.24 2.47 time
0.64 0.71 0.82 V
0.22 0.29 0.34 V
2.5 2.75 3.6 us
0.45 0.5 0.75 us
0.2 0.29 0.4 V
0.07
0.64
0.08
0.71
0.09
0.82
P-P
P-P
P-P
V
V
P-P
P-P
KA2197D RGB ENCODER FOR NTSC
TEST WAVEFORM
*R,G,B OUT * COMPOSITE VIDEO OUT
*AUDIO OUT
AUDIO IN
64us
4.5us
2.0V
SYNC IN
0.8V
1.0Vp-p
f=200KHz
Vo
Vin=1Vp-p
f=1kHz
R,G,B
IN
R,G,B
OUT
2.0V
SYNC IN
0.8V
1 Vp-p
1 Vp-p
1 Vp-p
COMPOSITE VIDEO OUT
2.0V
0.8V
R IN
G IN
B IN
SYNC IN
AUDIO OUT
Vo
Vos
SYNC OUT
KA2197D RGB ENCODER FOR NTSC
APPLICATION CIRCUIT
R
G
OUT
OUTBOUT
75Ω75
470µF
470µF
+
+
24 23 22 21 20 19 18 17 16 15 14 13
composite
video OUT
75
Ω
470µF
75
Ω
470µF
470µF
+
Ω
+
Y OUT
+
75
Ω
470µF
C OUT
+
75
Ω
10µF
+
KA2197D
1 2 3 4 5 7 9 10 11 12
0.1µF
G
IN
0.1µF
B
IN
0.1µF
R
IN
n.c
6 8
n.c
10µF
0.1µF
AUDIO
IN
n.c
+
+
10µF
C. SYNC
IN
75
0.01µF
n.cn.c n.c
AUDIO
OUT
+
100µF
Vcc(5V)
400 ~ 100mVp-p
fsc in
4.43MHz
** only using external fsc input
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