STMicroelectronics recommends using a 10uF ceramic capacitor in parallel with a 100nF ceramic capacitor, both connected as close as possible to the power supply pins (VP and VN) to ensure stable operation.
The gain of the TDA7492P can be configured by connecting a resistor (Rg) between the gain pin (GAIN) and ground. The gain is calculated as 20 dB + (Rg/1.2 kΩ). For example, a 1 kΩ resistor sets the gain to 23 dB.
The maximum power dissipation of the TDA7492P is 30W. However, this value can be affected by the ambient temperature, PCB design, and heat sink used. It's essential to perform thermal calculations to ensure the device operates within its safe operating area.
Yes, the TDA7492P can be used in a bridged configuration to increase the output power. In this configuration, two devices are used, one for each channel, with the outputs connected in anti-phase. This configuration can deliver up to 300W of output power.
To protect the TDA7492P from overheating, it's essential to provide a suitable heat sink, ensure good airflow, and monitor the device's temperature using the thermal shutdown feature (TSD). The TSD feature will shut down the device if the junction temperature exceeds 150°C.
TDA7492P datasheet
by STMicroelectronics
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