The recommended operating voltage range for the TDA2541 is 8V to 12V, with a typical voltage of 9V.
To ensure proper biasing, connect a 1kΩ resistor between pins 1 and 3, and a 2.2kΩ resistor between pins 2 and 3. This will set the operating point to around 4.5V.
The maximum input signal amplitude that the TDA2541 can handle is around 2Vrms. Exceeding this may result in distortion and reduced performance.
The gain of the TDA2541 can be adjusted by changing the value of the resistor connected between pins 1 and 3. A higher value resistor will result in a lower gain, while a lower value resistor will result in a higher gain.
The typical output impedance of the TDA2541 is around 1kΩ. This should be taken into account when designing the output stage and selecting the load impedance.