DocID027029 Rev 1

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TDA7492PE

Application information

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4

Application information

4.1

Gain setting

The four gain setting of the TDA7492PE is set by the GAIN (pin 31). Internally, the gain is

set by changing the feedback resistors of the amplifier. The gain setting pins can be

controlled by standard logic drives.

4.2

Stereo and Mono application

The TDA7492PE can be used in Stereo BTL or in MONO BTL configuration. When the input

pins, INPB and INNB of the right Channel are directly shorted to VDDS (without input

capacitors) the device is in MONO configuration as shown in Figure 3.

Figure 3. Mono BTL setting

4.3

Smart protections

4.3.1

Over-current protection (OCP)

In case the over-current protection threshold is reached, the power stage will be shutdown

immediately. The device will recover automatically when the fault is removed.

Table 8. Gain settings

Voltage on GAIN pin

Total GAIN

Application Suggestions

20.8 dB

Pin “GAIN” connected to SGND

26.8 dB

External resistor divider <100 k

30 dB

External resistor divider <100 k

32.8 dB

Pin “GAIN” connected to VDDS