ca3217 Intersil Corporation, ca3217 Datasheet

ca3217

Manufacturer Part Number

ca3217

Description

Single Chip Tv Chroma/luminance Processor

Manufacturer

Intersil Corporation

Datasheet

1.CA3217.pdf (9 pages)

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May 1997

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Features

• All Chroma Processing and Demodulating Circuitry

• Phase Locked Subcarrier Regeneration Utilizing

• Supplementary ACC with Overload Detector to

• Linear DC Controls for Chroma Gain and Tint

• Dynamic “Flesh Correction” - Corrects Purple and

• Balanced Chroma Demodulators with Low Output

• Internal RF Filtering

• Requires Few External Components

• Automatic Beam Limiter

• Chroma Luminance Tracking Picture Control

Pinout

on a Single Chip in a 28 Lead Plastic Package

Sample and Hold Techniques

Prevent Over Saturation of the Picture Tube

Green Flesh Colors without Affecting Primary Colors

Impedance for Direct Coupling

Intersil (and design) is a registered trademark of Intersil Americas Inc.

ACC, KILLER FILTER

SANDCASTLE PULSE

OSCILLATOR IN 180

CHROMA CONTROL

OSCILLATOR IN 90

OVERLOAD FILTER

OSCILLATOR OUT

CHROMA INPUT

APC FILTER

TINT CONTROL

CHROMA OUT

GND

TOP VIEW

CA3217

(PDIP)

7-65

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.

Ordering Information

CA3217E

NUMBER

PART

BEAM LIMITER

LUMINANCE

PICTURE CONTROL

LOW PASS FILTER

BRIGHT CONTROL

BLUE

RED

GREEN

Q CARRIER IN

I CARRIER IN

DEMODULATOR CHROMA IN

OVERLOAD, FLESH DISABLE

CARRIER OUT

Chroma/Luminance Processor

TEMPERATURE

-40

RANGE

C to +85

CA3217

28 Lead PDIP

Single Chip TV

File Number

PACKAGE

1332.3

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ca3217 Summary of contents

Page 1

... Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002. All Rights Reserved Description The Harris CA3217E (Note 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 ...

Page 2

... S5 voltage. 5. Black to White. 6. T17 = T17/T16. 7. Adjust S3 for 4. amplitude = 50mV reference 15kHz. P-P 9. Adjust beam limiter to 10.7V. 10. Adjust beam limiter to 9.8V. 11. Adjust S2 for 1.5V at Pin 21, then calculate P20/P21 and P22/P21. P-P Specifications CA3217 Operating Conditions Operating Temperature Range . . . . . . . . . . . . . . . . . - +150 ...

Page 3

... Typical Performance of the CA3217E FUNCTION Nominal Supply Nominal Dissipation Oscillator Stability -14 Supply Variation 10 V Variation With Temperature (T = +50 AFPC Characteristics DC Loop Gain Pull In Range ACC Characteristics 100% Chroma Input Level 3dB Point Hue Control Range Saturation Control Range DEMODULATOR PARAMETERS ...

Page 4

... Functional Block Diagram CA3217 CA3217E 7-68 ...

Page 5

... Schematic Diagram CA3217 CA3217E 7-69 ...

Page 6

... Schematic Diagram (Continued) CA3217 CA3217E 7-70 ...

Page 7

... T = +25 C, LUMA INPUT = 0.5V A P-P CONTRAST = 6.3V, SATURATION = 6.3V 14 PIN 28 = 11. BRIGHTNESS CONTROL (V) FIGURE 2. TYPICAL P BLACK LEVEL VERSUS 21 BRIGHTNESS CONTROL CA3217 FIGURE 1. TEST CIRCUIT FOR CA3217E T = +25 (30% SYNC) A BRIGHTNESS = 4V, SATURATION = 6.3V 5.5 PIN 28 = 11.8V 4.5 3.5 2.5 1.5 0 FIGURE 3. TYPICAL P CONTROL 7- LUMA INPUT = 0.5V (30% SYNC) P ...

Page 8

... T = +25 C, CHROMA INPUT = 250mV A 200 SATURATION = 6.3V, BRIGHTNESS = 4V BEAM LIMITER = 11. CONTRAST CONTROL (V) FIGURE 6. TYPICAL P CHROMA OUTPUT vs CONTRAST 1 CONTROL CA3217 (Continued +25 A BURST = 125mV 2200 BRIGHTNESS = 4.0V, BEAM LIMITER = 11.8V 1800 CONTRAST PIN 26 1400 1000 600 200 FIGURE 5. TYPICAL P CONTROL ...

Page 9

... CA3217 FIGURE 8. TYPICAL APPLICATION CIRCUIT 7-73 ...

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