CXA1700 datasheet(6/51 Pages) SONY

Part #	CXA1700

Description	Luminance and Color Signal Processing for 8mm VCR

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Manufacturer	SONY [Sony Corporation]

Direct Link	http://www.sony.co.jp

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6 / 51 page

—6—

CXA1700AQ/AR

Symbol

Pin voltage

Equivalent circuit

Description

No.

DC

AC

Internal reference voltage

source. (Can not be used as

external bias for Pins other

than 4, 6, and 9.)

Outputs chroma signal that

has passed through PB C

BPF and chroma feedback

comb filter subtracter

after frequency conversion

during playback.

Connects decoupling

capacitor for limiter of the

playback Y comb block.

Outputs Y signal processed by

comb filter. During playback,

the signal is output through

the sharpness circuit. If mode

E is set High, the signal is

output without passing

through the f sc Trap; if mode

SHP THRU is set High, the

signal is output without

passing through the sharp

-ness circuit.

VCA gain adjustment in the

comb filter block. (Refer to

Adjustment Procedure.)

150

3k

11

2.5k

150

300

12

0.6mA

270

150

13

150

10k

1.4mA

150

14

150

15

11 VG1

12 C TRAP

13 LIM C

14 Y COMB

OUT

15 COMB ADJ

2.05V

2.4V

1.2V

(sync tip

level)

Control

range: 1.8V

to Vcc

—

Chroma

signal

300mVp-p

output during

playback

—

Y signal

500mVp-p

output

—

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CXA1700 Datasheet(PDF) 6 Page - Sony Corporation

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