CA3126E datasheet(4/9 Pages) HARRIS

No de pièce	CA3126E

Description	TV Chroma Processor

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Fabricant	HARRIS [Harris Corporation]

Site Internet	http://www.harris.com

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4 / 9 page

8-36

Block Diagram

TV CHROMA PROCESSOR

NOTES:

6. Optional design features.

7. Pinout numbers refer to the PDIP package.

-

π/4

φ SHIFTER

4

3

6

7

2

SIGNAL

SAMPLE

AND HOLD

BIAS

SAMPLE

AND HOLD

DC CONTR.

BALANCED

φ SHIFTER

VCO

AMPL.

LIMIT

AFPC

DET.

+

π/4

φ SHIFTER

AMPL.

8

CARRIER

OUTPUT

ACC

AMPL.

ACC

DET.

INTERN.

REF.

ATTENU-

ATOR

OVERLOAD

DETECTOR

SECOND

CHROMA

AMPL.

13

BIAS

CONTROL

COUPLING

NETWORK

KILLER

AMPL.

12

15

DELAY

BIAS

DELAY

BIAS

SIGNAL

SAMPLE

AND HOLD

BIAS

SAMPLE

AND HOLD

BALANCE-

UNBALANCE

TRANSLATOR

10

11

1

16

FIRST

CHROMA

AMPL.

SUPPLY

VOLTAGE

2N2102

CHROMA

OUTPUT

270

Ω

10k

Ω

0.05

µF

0.01

µF

3.9k

Ω

ZENER

REF.

KEYER

14

9

2k

Ω

5

µs WIDTH

HORIZONTAL

KEY INPUT

0V

KILLER

FILTER

CHROMA

INPUT

CHROMA

INPUT

0.01

µF

2.45k

Ω

2

µF

CHROMA GAIN

CONTROL

1.2k

Ω

50k

Ω

10

k

Ω

TO

TERM. 12

0.01

µF

0.01

µF

1

µF

ACC

FILTER

CA3126

0.01

µF

+11.2V

33pF

20pF

10pF

CRYSTAL

FILTER

680

Ω

2k

Ω

AFPC

FILTER

1.0

µF

0.01

µF

RF

BYPASS

0.01

µF

GND

0.01

µF

+24V

CW

CCW

(NOTE 6)

5

CA3126

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