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Stereo 3.7W Class D Amplifier

Big 3.7W/Channel Power in a Small, 14-Pin TDFN Package

Product Details

Key Features

Parametric specs for Speaker Amplifiers
# Channels 2
Class D
Spkr. Amp. VCC (V) (min) 2.6
Spkr. Amp. VCC (V) (max) 5.5
Spkr. Amp. ICC (mA) (typ) 2
POUT into 4Ω @ 1% THD+N (W) (min) 2.4
POUT into 4Ω @ 10% THD+N (W) (min) 3
POUT into 8Ω @ 1% THD+N (W) (min) 1.4
POUT into 8Ω @ 10% THD+N (W) (min) 1.7
Spkr. Amp. Half Pwr. THD+N (%) 0.04
SNR (dB) (A- Weighted) 99
PSRR (dB) (min) 95
Package/Pins TDFN/14
Budgetary
Price (See Notes)
0.84
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Simplified Block Diagram

Technical Docs

Data Sheet Stereo 3.7W Class D Amplifier Jan 15, 2017

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Filtered Search

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Speaker Amplifiers
# Channels 2
Class D
Spkr. Amp. VCC (V) (min) 2.6
Spkr. Amp. VCC (V) (max) 5.5
Spkr. Amp. ICC (mA) (typ) 2
POUT into 4Ω @ 1% THD+N (W) (min) 2.4
POUT into 4Ω @ 10% THD+N (W) (min) 3
POUT into 8Ω @ 1% THD+N (W) (min) 1.4
POUT into 8Ω @ 10% THD+N (W) (min) 1.7
Spkr. Amp. Half Pwr. THD+N (%) 0.04
SNR (dB) (A- Weighted) 99
PSRR (dB) (min) 95
Package/Pins TDFN/14
Budgetary
Price (See Notes)
0.84

Key Features

  • 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/Uses

  • Accessory Speakers
  • Cellular Phones
  • MP3 Players
  • Portable Audio Players
  • Smartphones
  • Tablets
  • VoIP Phones

Description

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.

Simplified Block Diagram

MAX98306: Typical Application Circuit MAX98306: Typical Application Circuit Zoom icon

Technical Docs

Data Sheet Stereo 3.7W Class D Amplifier Jan 15, 2017

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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.