TS4984FC datasheet(2/30 Pages) STMICROELECTRONICS

Numer części	TS4984FC

Szczegółowy opis	1.2W Stereo Audio Power Amplifier with Active Low Standby Mode

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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2 / 30 page

Typical Application Schematic

TS4984FC

2/30

1

Typical Application Schematic

Figure 1 show a typical application schematic for the TS4984FC.

Table 1.

External component descriptions

Figure 1.

Application information

Components

Functional Description

Rin L,R

Inverting input resistors which sets the closed loop gain in conjunction with Rfeed.

These resistors also form a high pass filter with Cin =1/2 x Pi x Rin xCin))

Cin L,R

Input coupling capacitors which blocks the DC voltage at the amplifier input terminal

Rfeed L,R

Feedback resistors which sets the closed loop gain in conjunction with Rin

Cs

Supply Bypass capacitor which provides power supply filtering

Cb

Bypass pin capacitor which provides half supply filtering

AV L, R

Closed loop gain in BTL configuration = 2 x (Rfeed / Rin) on each channel

100nF

Cin1

VCC

Cs

Cb

100nF

Cin2

INPUT2

StandBy

Control

A1

B2

C3

A3

B4

Bias

C5

AV = -1

BYPASS

STDBY

VOUT1-

VOUT1+

+

-

+

-

AV = -1

VOUT2-

VOUT2+

+

-

+

-

D6

E5

E3

D4

C1

BYPASS

IN1-

IN1+

IN2+

IN2-

U1

22k

Rfeed1

Cfeed1

INPUT1

OUTPUT1

OUTPUT2

W ire optional

Internal connection

Cfeed2

+

22k

Rin1

22k

Rin2

22k

Rfeed2

Podobny numer części - TS4984FC

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STMicroelectronics	TS4984	804Kb / 29P	2 x 1W Stereo audio power amplifier with active low standby mode January 2005 Revision 1
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