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 

TS4999

Figure 57. Wake-up phase

STBY

Level

HI

STBY

Application information

LO STBY

Gain

Gain increasing Preset gain

Time

Mute

Mute

tWU-A

tWU-B

tWU

Time

When the standby command is set, the time required to set the output stage to high

impedance and to put the internal circuitry in shutdown mode is called the standby time.

This time is used to decrease the gain from its nominal value set by the digital pins G0 and

G1 to mute and avoid any pop noise during shutdown. The gain decreases smoothly until

the outputs are muted. See Figure 58: Shutdown phase.

Figure 58. Shutdown phase

STBY

Level

HI

STBY

LO

Preset gain

Gain

STBY

Gain decreasing

Time

Mute

tSTBY

Mute

Time

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