TS4999EIJT データシートの表示（PDF） - STMicroelectronics

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TS4999EIJT

Filter-free stereo 2.8 W class D audio power amplifier with selectable 3D sound effects

STMicroelectronics 

TS4999

2

Application information

Figure 1. Typical application schematic

Application information

Dif ferent ial

Left Input

Left IN+

Cin

Cin

Left IN-

Dif ferent ial

Right Input

Right IN+

Cin

Cin

Right IN-

Gain Select

Control

3D Effect

Control

VCC

Cs

0.1uF

VCC

Cs R

1uF

VCC

Cs L

1uF

TS4999

A1 Lin+

B2 Lin-

Gain

Select

C3 G0

C5 G1

E1 Rin+

D2 Rin-

Gain

Select

A3 STBYL

E3 STBYR

Standby

Control

AVC C

RPVCC

PWM

LPVC C

Lout+ A5

H

Bridge Lout- A7

Left speaker

Osci llator

PWM

Protection

Circuit

AGN D

Rout+ E5

H

Bridge Rout- E7

Right speaker

PGN D

Standby Control

Note:

See Section 4.9: Output filter considerations on page 29.

Table 4. External component description

Components

Functional description

CS, CSL, CSR

Cin

Supply capacitor that provides power supply filtering.

Input coupling capacitors that block the DC voltage at the amplifier input terminal.

The capacitors also form a high pass filter with Zin

(Fcl = 1 / (2 x π x Zin x Cin)). Note that the value of Zin changes with each gain setting.

These coupling capacitors are mandatory.

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