Product Summary

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.

Parametrics

Part Number Class Spkr. Amp. VCC
(V) 		Spkr. Amp. VCC
(V) 		Spkr. Amp. ICC
(mA) 		POUT into 4Ω @ 1% THD+N
(W) 		POUT into 4Ω @ 10% THD+N
(W) 		POUT into 8Ω @ 1% THD+N
(W) 		POUT into 8Ω @ 10% THD+N
(W) 		Spkr. Amp. Half Pwr. THD+N
(%) 		SNR
(dB) 		PSRR
(dB) 		Spkr. Amp. Ext. Gain Spkr. Amp. Fxd. Gain
(V/V) 		Spkr. Amp. Fxd. Gain
(V/V)
min max typ min min min min A- Weighted min min max
MAX98304  D 2.5 5.5 0.95 2.6 3.2 1.4 1.8 0.03 99.6 90 No 1 4

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

Diagrams

MAX98304: Typical Application Circuit