NE58633

NE58633 Noise reduction class-D headphone driver amplifier Rev. 03 — 19 January 2010 Product data sheet 1. General description The NE58633 is a stereo, noise reduction, class-D, Bridge-Tied Load (BTL) headphone driver amplifier. Each channel comprises a class-D BTL headphone driver amplifier, an electret microphone low noise preamplifier, feedback noise reduction circuit and a music amplifier input. The NE58633 operates with a battery voltage of 0.9 V to 1.7 V. The chip employs an on-chip DC-to-DC boost converter and internal Vref voltage reference which is filtered and output to ground for noise decoupling. It features mute control and plop and click reduction circuitry. The gain of the microphone amplifier and filter amplifier is set using external resistors. Differential architecture provides increased immunity to noise. The NE58633 is capable of driving 800 mVrms across a 16 Ω or 32 Ω load and provides ElectroStatic Discharge (ESD) and short-circuit protection. It is availa...