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Mono 3.2W Class D Amplifier

Industry's Smallest Class D Amplifier! 1mm x 1mm!

Product Details

Key Features

Applications/Uses

Parametric specs for Speaker Amplifiers
# Channels 1
Class D
Spkr. Amp. VCC (V) (min) 2.5
Spkr. Amp. VCC (V) (max) 5.5
Spkr. Amp. ICC (mA) (typ) 0.95
POUT into 4Ω @ 1% THD+N (W) (min) 2.6
POUT into 4Ω @ 10% THD+N (W) (min) 3.2
POUT into 8Ω @ 1% THD+N (W) (min) 1.4
POUT into 8Ω @ 10% THD+N (W) (min) 1.8
Spkr. Amp. Half Pwr. THD+N (%) 0.03
SNR (dB) (A- Weighted) 99.6
PSRR (dB) (min) 90
Package/Pins WLP/9
Budgetary
Price (See Notes)
0.47
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Simplified Block Diagram

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Parameters

Parametric specs for Speaker Amplifiers
# Channels 1
Class D
Spkr. Amp. VCC (V) (min) 2.5
Spkr. Amp. VCC (V) (max) 5.5
Spkr. Amp. ICC (mA) (typ) 0.95
POUT into 4Ω @ 1% THD+N (W) (min) 2.6
POUT into 4Ω @ 10% THD+N (W) (min) 3.2
POUT into 8Ω @ 1% THD+N (W) (min) 1.4
POUT into 8Ω @ 10% THD+N (W) (min) 1.8
Spkr. Amp. Half Pwr. THD+N (%) 0.03
SNR (dB) (A- Weighted) 99.6
PSRR (dB) (min) 90
Package/Pins WLP/9
Budgetary
Price (See Notes)
0.47

Key Features

  • Low Quiescent Current: 0.95mA at 3.7V
  • Spread Spectrum and Active Emissions Limiting
  • Five Pin-Selectable Gains
  • 19µVRMS Ultra-Low Noise
  • 90dB PSRR
  • Click-and-Pop Suppression
  • Thermal and Overcurrent Protection
  • Low-Current Shutdown Mode
  • 1.0mm x 1.0mm, 9-Bump WLP (0.3mm Pitch) Space-Saving Package

Applications/Uses

  • Cellular Phones
  • MP3 Players
  • Notebook and Netbook Computers
  • Portable Audio Players
  • Tablets
  • VoIP Phones

Description

The MAX98304 mono 3.2W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (0dB, 3dB, 6dB, 9dB, and 12dB) 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 0.95mA at 3.7V (1.2mA at 5V) quiescent current extends battery life in portable applications.

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

Simplified Block Diagram

MAX98304: Typical Application Circuit MAX98304: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .