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PDF CA3194 Data sheet ( Hoja de datos )
| Número de pieza | CA3194 | |
| Descripción | Single Chip PAL Luminance/Chroma Processor | |
| Fabricantes | Intersil | |
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Semiconductor
May 1997
Features
CA3194
NOT
RECOMMENDED
FOR
NEW
DESIGNS
Single Chip PAL
Luminance/Chroma Processor
Description
• All PAL Luminance and Chrominance Processing The Harris CA3194E is a silicon monolithic integrated circuit
Circuitry on a Single Chip in a 24-Lead Plastic designed to perform all of the signal processing functions for both
Package
the chroma and luminance signals of PAL color television receivers.
• Phase-Locked Subcarrier Regeneration Utilizing
Sample-and-Hold
• DC Controls for Brightness, Contrast, and Color
Saturation Functions
• Input for Average Beam-Current Limiting
• Contrast Control Having Excellent Tracking of
Luma and Chroma Channels
• Low-lmpedance RGB Outputs with Excellent
Tracking for Direct Coupling to Video Driver
Circuitry
This circuit performs all the functions needed between the video
detector and the video RGB output stages. DC contrast, bright-
ness, and saturation controls and average beam limiting functions
are included. The RGB buffer stages are capable of delivering
5mA of current into the video output stages.
NOTE: Formerly Dev. No. TA10313.
Ordering Information
PART
NUMBER
CA3194E
TEMPERATURE
RANGE
-40oC to +85oC
PACKAGE
24 Lead PDIP
Pinout
CA3194
(PDIP)
TOP VIEW
GND 1
CHROMA OUT 2
SAT. CONTR. 3
CHROMA INPUT 4
ACC FILTER 5
ACC FILTER 6
APC FILTER 7
APC FILTER 8
90o INPUT 9
0o INPUT 10
VCO OUTPUT 11
VCC 12
AVER. BEAM
24 INFO
23
BRIGHTNESS
CONTROL
22 PICTURE CONTROL
21
LOW PASS
FILTER
20 LUMA INPUT
19
PEAK BEAM
LEVEL
18 R OUTPUT
17 G OUTPUT
16 B OUTPUT
15 VR-Y INPUT
14 VB-Y INPUT
13 SANDCASTLE
TERMINAL VOLTAGE AND CURRENT RATINGS
VOLTAGE (NOTE 1) -V
CURRENT - mA
TERMINAL MIN MAX IIN IOUT
1 ----
2 0 13 0 30
3 0 8 10 -
4 05 - -
5
0 Note -
-
6 - - 0.1 0.5
7
0 Note -
-
8
0 Note -
-
9 08 - -
10 0 8 - 0.7
11 0 13 - 10
12
0 13 -
-
13
0 12 -
-
14 0 5 - 1.5
15 0 5 - 1.5
16 0 13 - 10
17 0 13 - 10
18 0 13 - 10
19
0 Note -
-
20 0 5 - -
21
0 Note -
-
22 0 8 - -
23 0 5 - -
24
NOTE:
0 12 -
-
1. The maximum should not exceed the VCC voltage. Voltage with respect to
Terminal 1 for VCC (Terminal 12) of 12V ±10%.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1997
7-56
File Number 1270.3
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
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Typical Performance Curves
CA3194
11
VC = VS = 2.85V
10 VCC = 12V
PIN 20 : 0.5VP-P (30% SYNC)
9
8
7
6
5
4
3
01 2 34 5
PIN 23 - BRIGHTNESS CONTROL (VB, V)
FIGURE 1. BRIGHTNESS CONTROL (VB) MEASURED AT PIN
18 OUTPUT TERMINAL
4
VS = 2.85V
VCC = 12V
PIN 4 : BURST = 100mVP-P
3 CHROMA = 220mVP-P
2
1
0
0 12 34 5
PIN 22 - COLOR CONTRAST CONTROL (VC, V)
FIGURE 2. CONTRAST CONTROL (VC) MEASURED AT 2ND
CHROMA AMPLIFIER OUTPUT TERMINAL
4
VS = 2.85V
VCC = 12V
PIN 20 : 0.5VP-P (30% SYNC)
3 BLACK LEVEL = 7V
2
1
0
0 1 2 34 5
PIN 22 - CONTRAST CONTROL (VC, V)
FIGURE 3. CONTRAST CONTROL (VC) MEASURED AT PIN 18
OUTPUT TERMINAL
32
VC = VS = 2.85V
28 V18 = 2VP-P AT VCC = 12V
VB SET TO BLACK LEVEL = 7V
24
20
16
12
8
4
0
7 8 9 10 11 12 13 14 15 16 17
PIN 12 - SUPPLY VOLTAGE (V)
FIGURE 4. LUMA GAIN vs SUPPLY VOLTAGE (VCC) MEASURED
AT LUMA AMPLIFIER OUTPUT TERMINAL
18
VS = 2.85V
16 VB AND VC ADJUSTED FOR MAX
LINEAR V16
14 PIN 4: BURST = 100mVP-P
CHROMA = 220mVP-P
12
TOP CLIPPING
10
BLACK LEVEL
8
6
BOTTOM CLIPPING
4
2
11
12 13 14 15
PIN 12 - SUPPLY VOLTAGE (V)
16
FIGURE 5. LINEAR OPERATING RANGE AS A FUNCTION OF
VCC MEASURED AT PIN 16 OUTPUT TERMINAL
(BEST OPERATING RANGE IS 11-13V VCC)
20
CHROMA INPUT: BURST = 100mVP-P
CHROMA = 220mVP-P
LUMA INPUT: 0.5VP-P (30% SYNC)
10 ADJUST VC FOR V18 = VPEAK LUMA,
THEN ADJUST VS FOR V18 = 2VPEAK
CHROMA (RED BAR)
0
-10
-20
0
1 2 34
PIN 22 - CONTRAST CONTROL (VC, V)
5
FIGURE 6. LUMA/CHROMA TRACKING AS A FUNCTION OF VC
MEASURED AT PIN 18 OUTPUT TERMINAL
7-60
Datasheet pdf - http://www.DataSheet4U.net/
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| PDF Descargar | [ Datasheet CA3194.PDF ] | |
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