LM1881MX datasheet by Texas Instruments

LM1881MX Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the LM1881MX?
  The recommended operating voltage range for the LM1881MX is 4.75V to 12V, although it can operate up to 15V with reduced performance.
• How do I ensure the LM1881MX is properly biased for optimal performance?
  To ensure proper biasing, connect the VCC pin to a stable voltage source, and decouple it with a 0.1uF capacitor to ground. Also, connect the GND pin to a low-impedance ground plane.
• What is the maximum input signal amplitude that the LM1881MX can handle?
  The maximum input signal amplitude that the LM1881MX can handle is 2Vpp (peak-to-peak) for a 1Vrms (root-mean-square) output. Exceeding this may cause distortion or clipping.
• Can I use the LM1881MX as a line driver for digital signals?
  No, the LM1881MX is designed for analog audio signals and is not suitable for digital signal transmission. It may not provide the necessary bandwidth, rise time, or signal integrity for digital signals.
• How do I reduce noise and hum in my LM1881MX-based circuit?
  To reduce noise and hum, use a well-regulated power supply, decouple the VCC pin with a 0.1uF capacitor, and use a low-noise, high-impedance input source. Additionally, consider using a shielded cable and a grounded metal enclosure.