Page 1
KA2195D RGB ENCODER FOR NTSC
RGB ENCODER
The KA2195D 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.
The KA2195D is suitable for video equipment
FUNCTION
•
Regulator
•
Mixer of R-Y, B-Y
•
Modulator
•
Pulse generator
•
Audio buffer
•
X-tal oscillator
•
Clamp circuit
•
BPF & D.L circuit
FEATURE
•
Lower operating voitage:Vcc= 5V
• Stabilized bias condition in regulator
• Available only NTSC system
• Included 75 ohm driver (RGB Output, composite video output, composite sync. output)
• Sub-carrier frequency using X-tal and available external input
• Include BPF & delay line
:Minimized external components
• Audio buffer circuit
• R-Y, B-Y modulator
BLOCK DIAGRAM
PIN CONFIGURATION
Device Package Operating Temperature
KA2195D 24SOP
-20~+70°C
24 SOP
ORDERING INFORMATION
1
5
7
9 10 11 12
24 23
22 21
20 19 18 17 16 15 14
R
G
B
VIDEO
OUTPUT
Y/C
MIXER
3.58M
BPF
DL &
TRAP
R,G,B CLAMP
2
R
G B
3
4
B-Y MODULATOR
PULSE
GEN.
13
R-Y MODULATOR
SYNC
OUT
6 8
BUFFER
+
SYNC
ADD
MATRIX
PHASE
SHIFTER
X-TAL
OSC.
REGULATOR
R,G,B OUTPUT
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KA2195D RGB ENCODER FOR NTSC
* VCC 1,GND 1: EXCEPT OUTPUT STAGE
* VCC 2, GND 2: OUTPUT STAGE
ABSOLUTE MAXIMUM RATINGS (TA=25°C)
ELECTRICAL CHARACTERISTICS(T
A
=25°C, VCC=5V)
Pin No. DESCRIPTION Pin No DESCRIPTION
1 GND 1 13 REGULATOR CURRENT SINK
2 RED INPUT 14 2V REGULATOR OUTPUT
3 GREEN INPUT 15 N.C
4 BLUE INPUT 16 N.C
5 X-TAL OUT 17 N.C
6 X-TAL IN 18 N.C
7 NTSC S/W(VCC) 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
Characteristic Symbol Value Unit
Supply Voltage V
CC
10 V
Power dissipation P
D
1250 mW
Operating Temperature T
OPR
-20~+70
°C
Storage Temperature T
STG
-55~+150
°C
Characteristic Symbol Test Condition Min Typ Max Unit
Supply Current 1 I
CC1
No Signal input 20 27 32 mA
Supply Current 2 I
CC2
No Signal input 5.6 7.6 11 mA
R Output Voltage V
O
R
IN
=1 V
P-P
0.64 0.71 0.78 V
P-P
G Output Voltage V
O
GIN =1 V
P-P
0.64 0.71 0.78 V
P-P
B Output Voltage V
O
BIN =1 V
P-P
0.64 0.71 0.78 V
P-P
R Frequency Response f
C
R, G, B f = 200 KHz 5 - - MHz
G Frequency Response f
C
-dB POINT 5 - - MHz
B Frequency Response f
C
5 - - MHz
Sync. Level V
OS
Condition:R, G, B and 0.26 0.29 0.33 V
R 100% Y Level V
O
C Sync. input 0.19 0.21 0.25 V
G 100% Y Level V
O
Measure Composite 0.38 0.42 0.48 V
B 100% Y Level V
O
Video Output 0.07 0.08 0.09 V
Page 3
KA2195D RGB ENCODER FOR NTSC
Characteristic Symbol Test Conditions Min Typ Max Unit
While 100% Y level V
O
0.64 0.71 0.82 V
Differiential Gain DG Composite Video - - 3.0 %
Differiential Phase DP Output - - 3.0 deg
Burst Level V
OB
0.22 0.29 0.34 V
P-P
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
WB
2.5 2.75 3.6 us
Burst Position T
DB
0.45 0.5 0.75 us
Carrier Leakage VI - - 30 mV
P-P
C Sync. Output Level V
OS
0.2 0.29 0.4 V
P-P
Audio Buffer Gain G
A
1V
P-P
, f=1KHz -1.0 0 1.0 dB
Audio Freq. Response F
A
-3dB 30 - - KHz
Audio Distortion THD 1V
P-P
, f=1KHz - - 1.0 %
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KA2195D RGB ENCODER FOR NTSC
* AUDIO OUT * SYNC. OUT
2.0V
0.8V
Vos
Vo
AUDIO OUT
AUDIO IN
Vin=1Vp-p
f=1kHz
SYNC OUT
SYNC IN
* COMPOSITE VIDEO OUT
2.0V
0.8V
SYNC IN
0.5V
0.2V
VIDEO IN
0.3V
CHROMA IN
Composite Video
Output
Page 5
KA2195D RGB ENCODER FOR NTSC
TEST WAVEFORM
* R,G,B OUT * COMPOSITE VIDEO OUT
2.0V
0.8V
SYNC IN
64us
4.5us
2.0V
0.8V
SYNC IN
1.0Vp-p
f=200KHz
R,G,B
IN
R,G,B
OUT
Vo
1 Vp-p
R IN
1 Vp-p
G IN
1 Vp-p
B IN
COMPOSITE VIDEO OUT
Page 6
KA2195D RGB ENCODER FOR NTSC
TEST CIRCUIT
KA2195D
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
75
Ω
75Ω
75Ω 75Ω
75Ω
75Ω 75Ω
++++
75Ω
5V
470µF
470µF
470µF
470µF
+
10µF
27KΩ
10µF
+
0.1µF 0.1µF
0.1µF
2.0V
50PF
15KΩ
30P
5V
R
G
B
AUDIO IN
+
10µF
+
10µF
C SYNC. IN
+
470µF
75Ω
75Ω
5V
A
3.58MHz
X-tal
Page 7
KA2195D RGB ENCODER FOR NTSC
APPLICATION CIRCUIT
6
5
KA2195D
0.1µF
N.C
400 ~ 1000mVp-p
fsc in
3.579545MHz
23 22 21 20 19 18 17 16 15 14 13
1
2 3 4 5 6 8 9 10 11 12
0.1µF
RINGINB
IN
0.1µF
0.1µF
15KΩ
30PF
AUDIO
IN
C.SYNC
IN
+
10µF 10µF
3.58MHz
X-tal
+
AUDIO
OUT
C. SYNC
OUT
+
75Ω
470µF
+
+
24
75Ω
470µF
470µF
470µF
75Ω
75Ω
75Ω
R
OUT
G
OUTBOUT
composite
video OUT
7
+
+
+
100µF
0.01µF
Vcc(5V)
+
10µF
27KΩ
+
10µF
n.c
n.c n.c n.c
470µF
50PF
KA2195D
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