LM4881M/NOPB Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the LM4881M?
  The recommended power-up sequence is to apply the power supply voltage (VCC) before applying the input signal. This ensures that the internal biasing circuitry is established before the input signal is applied.
• How do I optimize the gain setting for my specific application?
  The gain setting can be optimized by adjusting the values of the external resistors (Rf and Rg) connected to the gain pins (GAIN1 and GAIN2). The optimal values can be determined through experimentation or by using the equations provided in the datasheet.
• What is the maximum input signal amplitude that the LM4881M can handle?
  The maximum input signal amplitude that the LM4881M can handle is dependent on the supply voltage and the gain setting. As a general rule, the input signal amplitude should be limited to 2Vrms or less to avoid clipping and distortion.
• How do I minimize noise and hum in my audio circuit using the LM4881M?
  To minimize noise and hum, ensure that the power supply lines are well-filtered and decoupled, and that the audio signal lines are shielded and routed away from noise sources. Additionally, using a low-noise power supply and selecting low-noise components can help reduce noise and hum.
• Can I use the LM4881M in a stereo audio application?
  Yes, the LM4881M can be used in a stereo audio application by using two devices, one for each channel. The devices can be configured to operate in a master-slave configuration, with one device providing the clock signal to the other.