Application information

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DocID026152 Rev 1

Figure 37. Wake-up phase

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 (Figure 38).

Figure 38. Shutdown phase

Preset gain

Gain increasing

t

WU-A

t

WU

t

WU-B

STBY

Mute

Time

Time

Gain

STBY

Level

STBY

LO

HI

G = 6dB

G = 12dB

G = 18dB

G = 24dB

Mute

Preset gain

t

STBY

STBY

Time

Time

Gain

STBY

Level

Gain decreasing

LO

HI

G = 6dB

G = 12dB

G = 18dB

G = 24dB

Mute

STBY

Mute