EE Product News

Audio Buffer Maintains Code Of Silence

Exhibiting what may be the industry’s lowest noise and harmonic distortion figures, the LME49600 delivers the necessary output current to drive multiple low-impedance headphones and the voltage swing to drive several high-impedance headphones. Operating across a 180-MHz bandwidth, the device specifies a slew rate of 2 kV/ms and a 2.6 nV/ÖHz input referred voltage noise density. In a closed-loop configuration with the company’s LME49710 single op amp, THD+N is 0.00003%. The device can continuously source or sink 250 mA and offers pin-selectable bandwidth, including a low current, 30-MHz mode that consumes 8 mA and a180-MHz mode that consumes 15 mA. In both modes nominal slew rate is 2 kV/ms. Other features include a supply voltage range from ±2.25V to ±8V, current limiting, and thermal shutdown. Available now in a five-lead, surface-mount TO-263, price is $4.50 each/1,000. NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.


Product URL: Click here for more information

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.