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May 1997
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CA3217
Single Chip TV
Chroma/Luminance Processor
Features
鈥?All Chroma Processing and Demodulating Circuitry
on a Single Chip in a 28 Lead Plastic Package
鈥?Phase Locked Subcarrier Regeneration
Sample and Hold Techniques
Utilizing
Description
The Harris CA3217E (Note) is a monolithic silicon integrated
circuit. It contains all the required circuit functions between
the video detector and the picture tube RGB driver stages of
a color television receiver. The CA3217E decodes the
chrominance signals and then produces three different color
signals that are internally combined with the luminance to
develop the RGB signals. The picture saturation, hue and
brightness DC controls are externally adjustable by the
viewers. The AFPC, ACC, Dynamic flesh control, Beam
limiting and Gate black level (Brightness) control are servo
loops used to stabilize the RGB output and reduce frequent
manual adjustment. The automatic beam limiter circuit
reduces picture contrast and brightness to prevent
excessive drive output at the picture tube.
NOTE: Formerly Developmental Type No. TA10806.
鈥?Supplementary ACC with Overload Detector to
Prevent Over Saturation of the Picture Tube
鈥?Linear DC Controls for Chroma Gain and Tint
鈥?Dynamic 鈥淔lesh Correction鈥?- Corrects Purple and
Green Flesh Colors without Affecting Primary Colors
鈥?Balanced Chroma Demodulators with Low Output
Impedance for Direct Coupling
鈥?Internal RF Filtering
鈥?Requires Few External Components
鈥?Automatic Beam Limiter
鈥?Chroma Luminance Tracking Picture Control
Ordering Information
PART
NUMBER
CA3217E
TEMPERATURE
RANGE
-40
o
C to +85
o
C
PACKAGE
28 Lead PDIP
Pinout
CA3217
(PDIP)
TOP VIEW
CHROMA OUT
CHROMA CONTROL
CHROMA INPUT
1
2
3
28 BEAM LIMITER
27 LUMINANCE
26 PICTURE CONTROL
25 LOW PASS FILTER
24 BRIGHT CONTROL
23 V
CC
22 BLUE
21 RED
20 GREEN
19 Q CARRIER IN
18 I CARRIER IN
17 DEMODULATOR CHROMA IN
16 OVERLOAD, FLESH DISABLE
15 CARRIER OUT
OVERLOAD FILTER 4
5
ACC, KILLER FILTER
6
SANDCASTLE PULSE
GND
APC FILTER
10
OSCILLATOR IN 90
o
11
OSCILLATOR IN 180
o
12
OSCILLATOR OUT 13
TINT CONTROL 14
7
8
9
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2002. All Rights Reserved
7-65
File Number
1332.3
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