TDA7495SA

Applications

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3.3

Power-up/down sequence

In order to reduce the loud speaker “pop” noise when switching the device on or off we

recommend that you follow the sequence of operations shown in Figure 6 below.

Figure 6.

Recommended sequence using mute and stand-by functions

Using the mute function only

To simplify the application, pin STBY can be connected directly to ground so that the device

is always active. Then, to maintain the power-up/down performance you should adhere to

the following conditions:

"

At turn-on the transition mute to play must be made when pin SVR is higher than 2.5 V.

"

At turn-off the TDA7495SA must be set to mute from the play condition before pin SVR

falls below 2.5 V.

OFF

STBY MUTE

PLAY

STBY

OFF

MUTE

28

5

ST-BY

pin#9 (V)

5

MUTE

pin#10 (V)

INPUT

(mV)

VOUT

(V)

IQ

(mA)

D96AU531A

VSVR

pin#7(V)

2.5V