BD5461GUL Просмотр технического описания (PDF) - ROHM Semiconductor

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BD5461GUL

Analog Input Monaural Class-D Speaker Amplifier

ROHM Semiconductor 

BD5461GUL

●Evaluation board Parts List

Qty.

Item

Description

SMD Size

2

C1, C2 Capacitor, 0.1μF

0603

1

C3

Capacitor, 10μF

A (3216)

1

S1

Slide Switch

4mm X 10.2mm

1

U1

IC, BD5461GUL,

1.6mm X 1.6mm

Mono Class-D audio amplifier WL-CSP Package

1

PCB1

Printed-circuit board,

BD5460GUL EVM

―

Technical Note

Manufacturer/

Part Number

Murata

GRM188R71C104KA01D

ROHM

TCFGA1A106M8R

NKK

SS-12SDP2

ROHM

BD5461GUL

―

●Description of External components

①Input coupling capacitor (C1,C2)

It makes a Input coupling capacitor 0.1µF.

Input impedance is 75kΩ (Typ.).

It sets cutoff frequency fc by the following formula by input coupling capacitor C1(=C2) and input impedance Ri.

fc



1

2 π Ri

[Hz]

C1

In case of Ri=75kΩ, C1 (=C2)=0.1µF, it becomes fc = about 21 Hz.

②Power decoupling capacitor (C3)

It makes a power decoupling capacitor 10 µF.

When making capacitance of the power decoupling capacitor, there is an influence in the Audio characteristic.

When making small, careful for the Audio characteristic at the actual application.

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© 2010 ROHM Co., Ltd. All rights reserved.

6/16

2010.06 - Rev.A

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