LM386N-1/NOPB datasheet by Texas Instruments

LM386N-1/NOPB Frequently Asked Questions (FAQs)

• What is the maximum power supply voltage for the LM386N-1/NOPB?
  The maximum power supply voltage for the LM386N-1/NOPB is 18V. Exceeding this voltage may damage the device.
• How do I choose the correct gain for my application?
  The gain of the LM386N-1/NOPB can be set using an external resistor and capacitor network. A gain of 20 is the default, but it can be increased to 50 or 200 by adding external components. Refer to the datasheet for specific configurations.
• What is the minimum voltage required for the LM386N-1/NOPB to operate?
  The minimum voltage required for the LM386N-1/NOPB to operate is 4V. However, the device may not function optimally at this voltage, and a minimum of 6V is recommended for most applications.
• Can I use the LM386N-1/NOPB as a subwoofer amplifier?
  While the LM386N-1/NOPB can be used for low-power audio applications, it is not suitable for subwoofer amplification due to its limited power output and frequency response. A more powerful amplifier, such as the TPA3116, would be a better choice for subwoofer applications.
• How do I prevent oscillation and noise in my LM386N-1/NOPB circuit?
  To prevent oscillation and noise, ensure that the circuit is properly bypassed, and decoupling capacitors are used to filter the power supply. Additionally, use a low-ESR capacitor for the power supply bypassing, and keep the input and output traces as short as possible.