TDA7491MV

Applications circuit

Doc ID 14576 Rev 2

19/28

6

Applications circuit

Figure 18.

Applications circuit for class-D amplifier

6.1

Compatibility with TDA7491 stereo BTL family

TDA7491MV mono BTL analog class-D amplifier is derived from the TDA7491 stereo

analog class-D BTL family. TDA7491MV has only the left channel of the stereo BTL family.

In order to guarantee the pin to pin compatibility when moving the application from stereo to

mono, it is necessary to connect the right channel inputs (pins 32 and 33 of TDA7491 BTL

TDA7491MV

Input settings for standby, mute and play:

STBY : MUTE

Mode

0 V : 0 V

Standby

0 V : 3.3 V

Standby

3.3 V : 0 V

Mute

3.3 V : 3.3 V

Play

Input settings for gain:

GAIN0 : GAIN1

Nominal gain

0 V : 0 V

20 dB

0 V : 3.3 V

26 dB

3.3 V : 0 V

30 dB

3.3 V : 3.3 V

32 dB