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MAX98397 - Class-DG Amplifier

General Description

The MAX98397 is a high-efficiency, mono Class-DG speaker amplifier with industry-leading quiescent power, featuring integrated speaker current and voltage sensing (IVSENSE), a brownout-prevention engine (BPE), and dynamic-headroom tracking (DHT).

Key Features

  • Wide Input Supply Range (3V to 28V).
  • Class-DG Operation Enables Industry Leading Quiescent Power.
  • 21mW at VPVDD = 20V, VVBAT = 3.8V.
  • 25.3mW at VPVDD = 24V, VVBAT = 5.0V.
  • Ultra-Low Noise Floor.
  • 21.5μVRMS Output Noise.
  • 117.8dB Dynamic Range.
  • Low Distortion.
  • -85dB THD+N at 3W into 8Ω, f = 1kHz.
  • -85dB THD+N at 6W into 4Ω, f = 1kHz.
  • -80dB THD+N at 1W into 8Ω, f = 6kHz, FSW = 650kHz.
  • Output Power:.
  • 42W in.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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EVALUATION KIT AVAILABLE MAX98397 28V Digital Input, Class-DG Amplifier with IVSENSE, Ultra-Low IQ, and Brownout Prevention General Description The MAX98397 is a high-efficiency, mono Class-DG speaker amplifier with industry-leading quiescent power, featuring integrated speaker current and voltage sensing (IVSENSE), a brownout-prevention engine (BPE), and dynamic-headroom tracking (DHT). The device also enables ultrasound applications by providing support for sample rates up to 192kHz, a higher passband (for fS > 50kHz), and a bypass path for the ultrasound signals through the amplifier so it is not attenuated by the audio processing. Precision output current monitoring (ISENSE) and voltage monitoring (VSENSE) enable speaker protection algorithms to be run by a host device.