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Analog Devices / Maxim Integrated MAX98390 Digital Boosted DSM Smart Amplifier

Analog Devices MAX98390 Digital Boosted Dynamic Speaker Management (DSM) Smart Amplifier is a high-efficiency mono class-D DSM smart amplifier. This amplifier features an integrated boost converter, integrated DSM, and FET scaling for high efficiency at low output power. The MAX98390 smart amplifier is in a 0.4mm pitch 36-bump Wafer-Level Package (WLP). This smart amplifier operates over an -40°C to +85°C temperature range. The maximum boost converter output voltage is programmable from 6.5V to 10V in 0.125V increments from a battery voltage as low as 2.65V. Applications include smartphones, tablets, notebook computers, single Li-ion cell devices, IoT devices, and toys.

Features

  • Integrated speaker current and voltage sense requires no external components
  • Integrated programmable 10V boost converter:
    • Bypass mode
    • Envelope tracking
  • Integrated dynamic speaker management:
    • Thermal protection
    • Excursion protection
    • Low-frequency extension
    • 8-band parametric equalizer
    • Dynamic range compression
    • Perceptual power reduction
    • Debuzzer
    • Stereo bass management
  • Dynamic speaker output FET scaling
  • I2S/16-channel TDM and I2C interfaces
  • Class-D edge rate control enables filterless operation
  • Advanced brownout-protection engine
  • Extensive click-and-pop suppression
  • Robust short-circuit and thermal protection
  • Space-saving and 36-bump WLP package (6.3mm2 and 0.4mm pitch)

Specifications

  • Ultra-low noise floor:
    • 9μV output noise
    • 117dB dynamic range
  • Low distortion of 0.01% THD+N
  • Output power at 1% THD+N:
    • 5.1W into 8Ω, VVBAT = 4.3V
    • 5.1W into 4Ω, VVBAT = 4.3V
  • Output power at 10% THD+N:
    • 6.2W into 8Ω, VVBAT = 4.3V
    • 6.2W into 4Ω, VVBAT = 4.3V
  • System efficiency:
    • 82% at 1.2W into 8Ω, VVBAT = 3.7V
    • 86% at 0.45W into 8Ω, VVBAT = 3.7V

Applications

  • Smartphones
  • Tablets
  • Notebook computers
  • Single Li-ion cell devices
  • IoT devices
  • Toys

Additional Resource

MAX98390 Simplified Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX98390 Digital Boosted DSM Smart Amplifier

Functional Block Diagram

Analog Devices / Maxim Integrated MAX98390 Digital Boosted DSM Smart Amplifier

Associated Product

Analog Devices / Maxim Integrated MAX98390 Evaluation Kit

Evaluates MAX98390 boosted Class D audio amplifiers with integrated Dynamic Speaker Management™ IC.

Learn Moreabout Analog Devices / Maxim Integrated MAX98390 Evaluation Kit View Productsrelated to Analog Devices / Maxim Integrated MAX98390 Evaluation Kit

PUI Audio Dynamic Speaker Management - Ready Micro Speaker

Offers a 0.65 to 20kHz frequency range, a 1.2W maximum input rating, and a 6Ω ±15% impedance.

Learn Moreabout PUI Audio Dynamic Speaker Management - Ready Micro Speaker View Productsrelated to PUI Audio Dynamic Speaker Management - Ready Micro Speaker

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Published: 2019-05-17 | Updated: 2024-02-20