BA7745 데이터 시트보기 (PDF) - ROHM Semiconductor

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BA7745

VCR Hi-Fi audio signal REC / PB amplifier with flying-erase oscillator

ROHM Semiconductor 

Video ICs

•Measurement circuit

PB / REC

CTRL

CURRENT

SENSE

1k

PRE IN CH1

PRE IN CH2

1k

12pin SHORT

BA7745FS

REC MIX IN

OVERREC

CTR L

RECMUTE

CTRL

PRE OUT

EP / SP CTRL

HSWPIN

FE ON / OFF

FE OUT

Fig. 1

•Control mode tables

(1) REC / PB control

Switch between REC and PB using pin 17.

Control pin

REC / PB

H

L

Mode

REC

PB

Function

REC AMP PRE AMP REC + B SW HEAD SW (P)

ON

OFF

ON

OFF

OFF

ON

OFF

ON

5

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