AN8746 데이터 시트보기 (PDF) - Panasonic Corporation

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AN8746

PWM driver IC for portable CD player

Panasonic Corporation 

ICs for Compact Disc/CD-ROM Player

AN8746SA

s Application Notes

2. Logic table of driver

VC

PC

H

H

Fil to Fi4

L

Ril to Ri4

L

Fol to Fo3

L

Rol to Ro3

L

Fo4 Ro4

L

L

H

H

L

H

L

H

L

H

H

H

H

L

H

L

L

L

H

H

H

H

L

L

H

L

H

L

X

X

L

L

L

L

L

X

X

X

Hi-Z

Hi-Z

Hi-Z Hi-Z

Note) AC = H on the above logic table. H stands for VC power supply potential, L for GND potential (0 V) and X for H or L.

Hi-Z indicates that the driver output pin becomes a high impedance state.

Logic input pin must not be left open. And do not apply any other voltages than H or L.

s Application Circuit Example

DSP ⇔

Micro-

computer ⇔

M

M

VGI = 7 V

Logic circuit

Reset

Pre-

TSD

driver

H

bridge

VBG

Pre-

driver

VM1

monitor Logic circuit

H

bridge

H

bridge

Logic circuit

Pre-

driver

VG

limiter

H

bridge

Pre-

driver

Logic circuit

DSP ⇔

VC = 2.4 V/0 V

VM = 2.4 V

5

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