TS4984 datasheet(2/29 Pages) STMICROELECTRONICS

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TS4984

Typical Application

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Typical Application

Figure 1 shows a schematic view of a typical audio amplification application using the TS4984. Table 1

describes the components used in this typical application.

Figure 1: Typical application schematic

Table 1: External component descriptions

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 (fc = 1 / (2 x Pi x RIN x CIN)).

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.

Supply Bypass capacitor which provides power supply filtering.

Bypass pin capacitor which provides half supply filtering.

AV L, R

Closed loop gain in BTL configuration = 2 x (RFEED / RIN) on each channel.

Bias

AV = -1

Bypass L

Standby

AV = -1

Bypass R

VO-L

VO+L

VO-R

VO+R

IN-L

IN+L

IN+R

IN-R

TS4984

VCC

Rin-L

Cin-L

Input L

GND

Rin-R

Cin-R

Input R

GND

Cfeed-L

Rfeed-L

Cfeed-R

Rfeed-R

Neg. Output L

Pos. Output L

Neg. Output R

Pos. Output R

Wire optional

Internal connection

22k

100n

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