MAX98304 Mono 3.2 W Class D Amplifier


Maxim presents the industry's smallest Class D 1.0 mm x 1.0 mm amplifier

The MAX98304 mono 3.2 W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (0 dB, 3 dB, 6 dB, 9 dB, and 12 dB) set by a single gain-select input (GAIN).

Active emissions-limiting, edge-rate, and overshoot control circuitry greatly reduces EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These features reduce application component count.

The IC's 0.95 mA at 3.7 V (1.2 mA at 5 V) quiescent current extends battery life in portable applications.

The IC is available in a 9-bump (1.0 mm x 1.0 mm) WLP with 0.3 mm pitch that is specified over the extended -40°C to +85°C temperature range.


Long-Term Supply Program Lead (SnPb) Finish for COTS
Key Features
  • Low quiescent current: 0.95 mA at 3.7 V
  • Spread spectrum and active emissions limiting
  • Five pin-selectable gains
  • 19 µVRMS ultra-low noise
  • 90 dB PSRR
  • Click-and-pop suppression
  • Thermal and overcurrent protection
  • Low-current shutdown mode
  • 1.0 mm x 1.0 mm, 9-bump WLP (0.3 mm pitch) space-saving package
Applications/Uses
  • Cellular phones
  • MP3 players
  • Notebook and netbook computers
  • Portable audio players
  • Tablets
  • VoIP phones

MAX98304 Series

Manufacturer Part Number Description Available Quantity Datasheets
MAX98304DEWL+T IC AMP MONO 3.2W CLASS D 9-WLP 1990
MAX98304EWL+T IC AMP AUDIO 3.2W MONO D 9WLP 4930