Friday, August 29, 2014

TDA8559T Low voltage stereo headphone amplifier



General description for TDA8559T:

The TDA8559T is a stereo amplifier that operates over a wide supply voltage range from 1.9 V to 30 V and consumes a very low quiescent current. This makes it suitable for battery fed applications (2 × 1.5 V cells). Because of an internal voltage buffer, this device can be used with or without a capacitor connected in series with the load. It can be applied as a headphone amplifier, but also as a mono amplifier with a small speaker (25 Ω), or as a line driver in mains applications.

Features for TDA8559T:

  • Operating voltage from 1.9 V to 30 V
  • Very low quiescent current
  • Low distortion
  • Few external components
  • Differential inputs
  • Usable as a mono amplifier in Bridge-Tied Load (BTL) or stereo Single-Ended (SE)
  • Single-ended mode without loudspeaker capacitor
  • Mute and Standby mode
  • Short-circuit proof to ground, to supply voltage (< 10 V) and across load
  • No switch on or switch off clicks
  • SD protected on all pins

Applications for TDA8559T:

  • Portable telephones
  • MP3 players
  • Portable audio
  • Mains fed equipment
Circuit diagram for TDA8559T:

PCB layout for TDA8559T:


Datasheet for TDA8559T: Download


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