MAX98306ETD+T 音频放大器 MAXIM

MAX98306ETD+T

音频放大器 Speaker Amplifier

Stereo 3.7W Class D Amplifier

General Description MAX98306ETD+T

The MAX98306 stereo 3.7W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (6dB, 9dB, 12dB, 15dB, and 18dB) set by a single gain-select input (GAIN).

Active emissions limiting, edge-rate, and overshoot control circuitry combined with a filterless spread-spectrum modulation scheme (SSM) provide excellent EMI performance while eliminating the need for output filtering found in traditional Class D devices. These features reduce application component count.

The IC’s 2.0mA quiescent current with a 3.7V supply extends battery life in portable applications. The IC is available in a 14-pin TDFN (3mm x 3mm x 0.75mm) package specified over the extended -40°C to +85°C temperature range.

Features MAX98306ETD+T

● Output Power 3.7W at 3Ω, 10% THD, 1.7W at 8Ω,

10% THD, with 5V Supply

● Passes EMI Limit Unfiltered with Up to 12in of

Speaker Cable

● High 83dB PSRR at 217Hz

● Spread-Spectrum Modulation and Active

Emissions Limiting

● Five Pin-Selectable Gains

● Excellent Click-and-Pop Suppression

● Thermal and Overcurrent Protection

● Low-Current Shutdown Mode

● Space-Saving, 3mm x 3mm x 0.75mm,

14-Pin TDFN

Applications MAX98306ETD+T

● Smartphones

● Tablets

● Cellular Phones

● Accessory Speakers

● MP3 Players

● Portable Audio Players

● VoIP Phones