LM1875T datasheet by Texas Instruments

LM1875T Frequently Asked Questions (FAQs)

• What is the maximum power dissipation of the LM1875T?
  The maximum power dissipation of the LM1875T is dependent on the ambient temperature and the thermal resistance of the package. According to the datasheet, the maximum power dissipation is 2.5W at 25°C ambient temperature.
• Can I use the LM1875T as a headphone amplifier?
  Yes, the LM1875T can be used as a headphone amplifier. It has a high current capability and low noise, making it suitable for driving headphones. However, the output power may not be sufficient for high-impedance headphones.
• How do I choose the right gain resistors for the LM1875T?
  The gain resistors (Rf and Ri) determine the gain of the amplifier. The datasheet provides a formula to calculate the gain resistors based on the desired gain. Typically, a gain of 20-30 dB is suitable for most audio applications.
• What is the minimum supply voltage required for the LM1875T?
  The minimum supply voltage required for the LM1875T is 8V, but it's recommended to use a minimum of 10V to ensure proper operation.
• Can I use the LM1875T as a line driver?
  Yes, the LM1875T can be used as a line driver. It has a high current capability and low output impedance, making it suitable for driving long cables.