TDA7261(1997) Просмотр технического описания (PDF) - STMicroelectronics

Номер в каталоге

Компоненты Описание

производитель

TDA7261
(Rev.:1997)

25W MONO AMPLIFIER WITH MUTE/ST-BY

STMicroelectronics 

TDA7261

APPLICATIONS SUGGESTION

(Demo Board Schematic)

The recommended values of the external compo-

nents are those shown on the demo board sche-

matic. Different values can be used: the following

table can help the designer.

COMPONENTS

RECOMMENDED

VALUE

PURPOSE

LARGER THAN

SMALLER THAN

RECOMMENDED VALUE RECOMMENDED VALUE

R1

10KΩ

Mute Circuit

Increase of Dz

Biasing Current

R2

15KΩ

Mute Circuit

Vpin # 4 Shifted Downward Vpin # 4 Shifted Upward

R3

18KΩ

Mute Circuit

Vpin # 4 Shifted Upward

Vpin # 4 Shifted Downward

R4

15KΩ

Mute Circuit

Vpin # 4 Shifted Upward

Vpin # 4 Shifted Downward

R5

4.7Ω

Frequency Stability Danger of Oscillations

Danger of Oscillations

C1

1µF

Input DC

Decoupling

Higher Low Frequency

Cutoff

C2

1µF

St-By/Mute Time

Constant

Larger On/Off Time

Smaller On/Of Time

C3, C5

1000µF

Supply Voltage

Bypass

Danger of Oscillations

C4, C6

0.1µF

Supply Voltage

Bypass

Danger of Oscillations

C7

0.1µF

Frequency Stability

Dz

5.1V

Mute Circuit

Q1

BC107

Mute Circuit

MUTE, STAND-BY TRUTH TABLE

SW1

A

A

B

B

SW2

A

B

B

A

STAND-BY

STAND-BY

MUTE

PLAY

4/9

Share Link: