8-33

May 1999

CA3126

TV Chroma Processor

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

Copyright

File Number

860.5

Features

• Phase Locked Subcarrier Regeneration Utilizes

Sample-and-Hold Techniques

• Automatic Chrominance Control (ACC)/Killer Detector

Employs Sample-and-Hold Techniques

• Supplementary ACC with an Overload Detector to

Prevent Oversaturation of this Picture Tube

• Sinusoidal Subcarrier Output

• Keyed Chroma Output

• Emitter Follower Buffered Outputs for Low Output

Impedance

• Linear DC Saturation Control

Applications

• TV/CATV Receiver Circuits

• NTSC Color Decoder/Processor

• Computer Graphics Subcarrier Regenerator

• Timing Reference for Frame Grabbers

• DSP Clock Timing Reference Source

Description

The Harris CA3126 is a monolithic silicon integrated circuit

designed for TV chroma processing and is ideally suited for

NTSC color graphic applications that require subcarrier

regeneration of the color burst signal.

Pinouts

Part Number Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

CA3126E

-40 to 85

16 Ld PDIP

E16.3

CA3126M1

-40 to 85

20 Ld SOIC

M20.3

CA3126

(PDIP)

TOP VIEW

CA3126

(SOIC)

TOP VIEW

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

CHROMA IN

AFPC FILTER +

AFPC FILTER -

RF BYPASS

GROUND

VCO OUT

CARRIER OUT

VCO IN

CHROMA GAIN CONT.

ZENER REF

OVERLOAD DET.

V+

ACC+

ACC-

HORIZ. KEY IN

CHROMA OUT

11

12

13

14

15

16

17

18

20

19

10

9

8

7

6

5

4

3

2

1

CHROMA IN

AFPC FILTER +

NC

AFPC FILTER -

RF BYPASS

GROUND

VCO IN

VCO OUT

NC

NC

CHROMA GAIN CONT.

NC

ZENER REF

OVERLOAD DET.

CHROMA OUT

V+

ACC +

ACC -

HORIZ. KEY IN

CARRIER OUT

[ /Title

(CA31

26)

/Sub-

ject

(TV

Chrom

a Pro-

cessor)

/Autho

r ()

/Key-

words

(Har-

ris

Semi-

con-

ductor,

TV

chroma

pro-

cessor,

subcar-

rier

regen-

era-

tion,

ntsc,

acc,

over-

load

detec-

tor,

keyed

chroma

out-

put,

color

proces-

sor,

indus-

trial

OBSOLETE

PRODUCT

NO RECOMMENDED

REPLA

CEMENT

Call

Central

Applications

1-800-442-7747

or email:

centapp@harris.com