5

Application information

5.1

Stereo and mono BTL operation selection using the MODE pin

The TDA7498E can be used in stereo applications or mono BTL applications. Connecting the MODE pin to the

VDDS pin configures the device in mono BTL. The output of the two channels can be paralleled. When the MODE

pin is connected to ground or floating (pulled down internally) the device works as a stereo amplifier.

5.2

Gain setting

The gain of the TDA7498E is set by GAIN (pin 30).

Table 6. Gain settings

GAIN

Total gain

Application recommendation

VGAIN < 0.25*VDDS

23.6 dB

GAIN pin connected to SGND

0.25*VDDS < VGAIN < 0.5*VDDS

29.6 dB

Rc10 = Rc11 = Rc12 = 100 K max

0.5*VDDS < VGAIN < 0.75*VDDS

33.1 dB

Rc10 = Rc11 = Rc12 = 100 K max

VGAIN > 0.75VDDS

35.6 dB

GAIN pin connected to VDDS

5.3

Smart protection

The TDA7498E embeds an overcurrent protection circuitry to protect the device from unwanted current peaks. If

the overcurrent protection threshold (Table 5. Electrical specifications) is exceeded, the power stage will be shut

down immediately. The device will recover automatically once the fault is removed.

TDA7498E

Application information

DS8807 - Rev 4

page 10/17