YDA144-WZ View Datasheet(PDF) - Yamaha Corporation

Part Name

Description

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YDA144-WZ

STEREO 2.1W Non-Clip DIGITAL AUDIO POWER AMPLIFIER

Yamaha Corporation 

YDA144

●Snubber Circuit and schottky barrier diode

It is necessary to connect the snubber circuit and schottky barrier diode with the output terminal to prevent IC destruction

by the output short-circuit when using it on the following conditions. The constant and the circuit are as follows.

Power supply voltage range

2.7V≦PVDD≦4.5V

4.5V＜PVDD≦5.25V

Load conditions

RL=8Ω

Wiring inductance＞4µH

RL=4Ω or 8Ω

Snubber Circuit

Between OUT*+ and OUT*-

Rs=1.5Ω, Cs=330pF

Between OUT*+ and OUT*-

Rs=1.5Ω, Cs=680pF

Schottky barrier diode

Need less

Between OUT** and PVDD

Recommended parts

Schottky barrier diode: ROHM, RB161VA-20

Forward current surge peak = 5A or more, Average forward current = 1A or more,

Forward voltage (IF=1A) = 0.38V or less

＜Snubber circuit and Schottky barrier diode＞

9

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