CXA1702AR データシートの表示（PDF） - Sony Semiconductor

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CXA1702AR

4-channel REC/PB Amplifier for 8 mm VCR

Sony Semiconductor 

CXA1702AR

Pin Description

Pin

Symbol

No.

1 AFM IN

Pin voltage

DC

AC

— 125mVp-p

input

(VCC, VCC2, VCC1CH, VCC2CH=4.75V, Ta=25°C)

Equivalent circuit

70µ

20p

1

140

50k

2.45V

Description

Input pin for recording AFM

signal. Input signal bias should

be in the range from 1 V to 3.5 V.

Connect to Vcc when the pin is

not in use.

2 GND2

3 CIN

0V

2.45V

—

500mVp-p

input

3

140

50k

2.45V

25µ

GND pin

Input pin for recording chroma

signal.

4 XDECK 2.4V

—

(when pin

is open)

H: 4.3 V

or more

L: 0.6 V

or less

input

5 YIN

2.45V 500mVp-p

input

20µ

100k

4

140

20µ

100k

2.9V

1.8V

DECK and NORM switching pin

H : NORM (4ch)

} L :

DECK (2ch)

Open :

Input pin for recording Y signal.

40µ

5

140

50k

2.45V

6 LOW 1.8V to

LEVEL 4.75V

input

7

T1

—

8 YLEV_MTG 1.8V to

4.75V

input

—

EVR adjusting pin for low-band

270

6

140

21k

recording signal (chroma, AFM,

video path ATF, PCM path ATF)

level. Increasing the input

3.15V voltage lowers the signal level.

90µ

90µ

—

—

Test pin. Set the pin open.

—

EVR adjusting pin for recording Y

270

270

8

140

23k

14k

signal level and middle tune boost

amount. Adjusts the former during

recording and the latter during

playback. Increasing the input

voltage lowers recording Y signal

90µ 90µ 3.2V 100µ 100µ

level and boost amount.

2.8V 1.75V

YLEVEL

MTG

—3—

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