TS4999 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS4999

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

STMicroelectronics 

Application information

TS4999

4.7

Consumption in shutdown mode

Between the shutdown pin and GND there is an internal 300 kΩ (+-/20%) resistor. This

resistor forces the TS4999 to be in shutdown mode when the shutdown input is left floating.

However, this resistor also introduces additional shutdown power consumption if the

shutdown pin voltage is not at 0 V.

With a 0.4 V shutdown voltage pin for example, you must add 0.4 V/300 kΩ = 1.3 µA typical

(0.4 V/240 kΩ = 1.66 µA in maximum) for each shutdown pin to the standby current

specified in Table 8, Table 9 and Table 10.

Of course, this current will be provided by the external control device for standby pins.

4.8

Single-ended input configuration

It is possible to use the TS4999 in a single-ended input configuration. Input coupling

capacitors are also mandatory in this configuration. The schematic diagram in Figure 59

shows a typical single-ended input application.

Figure 59. Typical single-ended input application

Gain Select

Control

3D Effect

Control

VCC

Cs

0.1uF

VCC

Cs R

1uF

VCC

Cs L

1uF

Left Input

Cin

Cin

Right Input

Cin

Cin

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

Oscillator

PWM

Protection

Circuit

AGN D

Rout+ E5

H

Bridge Rout- E7

Right speaker

PGN D

Standby Control

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