Audio Amplifiers for Portable Devices

Smart Amplifiers

NXP products are leading performers for sound, robustness and EMC performance. NXP invented the world’s first smart amplifier and shipping more than 400 million units per year of low power audio products. Today’s audio technologies need to support portable equipment and audio component designs. While enabling miniaturized devices, they have to maximize the effect of small form factor speakers to generate a big, high quality sound.

End-User Benefits

  • Louder sound: the maximum possible volume from small speakers
  • Deeper bass: reproduces lower audio frequencies than traditional systems
  • Better quality: unmatched sound clarity with amplifier clipping and speaker distortion reduction
  • Longer life: prevents speaker damage with adaptive excursion control and real-time temperature protection

Class AB

Our Analog audio inputs class AB portfolio provides cost effective and protected solutions from 0.5 to 3.5 W with typical THD+N range of 0.15-0.3 % and wide supply voltage range of 2.2-18 V.

Class D – Non Boosted

Class D is crucial to save battery life and meet the output power requirements with low dissipation. Our Class D audio amplifiers provide protected mono solutions from 2.35 to 3 W, delivering audiophile sound quality while maximizing audio system capabilities.

Class D – Boosted

As speaker boost voltage requires precise speaker’s membrane excursion and coil temperature control based on speaker’s characteristics, related firmware tuning is necessary. This firmware adaptation is either managed in external host processor for Programmable smart amplifiers or in Smart audio amplifiers embedding a Digital Signal Processor.

NXP’s Smart audio amplifiers offer the most advanced solution to this conflict. They offer a turn-key solution for getting the most from micro-speakers. They offer the most advanced protection algorithm with the widest range of amplifier options ensuring the best sound from your mobile device.

Product Description
TFA9892UK The TFA9892 is very highly-efficient 12 V boost converter.
TFA9896UK A high efficiency class-D audio amplifier with a sophisticated SpeakerBoost protection algorithm.
TFA9888UK Stereo is becoming common in mobile devices, and NXP® is introducing the TFA9888UK which brings a 9.5V boost and stereo output for great sound in mobile devices.
TFA9891UK A high efficiency class-D audio amplifier with a sophisticated speaker boost and protection algorithm.
TFA9895UK A high efficiency class-D audio amplifier with a sophisticated speaker boost protection algorithm that features multi-band compression.
TFA9911UK A high efficiency class-D audio amplifier with a sophisticated speaker boost and protection algorithm.

Digital-in mono Class D audio amplifier with feedback loop for low-power applications