Class D Speaker Amps Are Compact And Efficient

Maxim Integrated Products’ MAX98357 and MAX98358 digital-input Class D audio power amplifiers are said to achieve high efficiency in a compact, cost-efficient plug-and-play package. The amplifiers deliver 3.2W of Class AB audio performance and are suitable for a wide variety of applications.

 

The MAX98357 pulse-code modulation (PCM) and MAX98358 pulse-density modulation (PDM) plug-and-play speaker amplifiers reduce overall solution size by taking advantage of a clever pin-out and by significantly reducing the number of required components compared to typical analog amplifier designs. Features include:

SENSORS EXPO & CONFERENCE

Sensors 2019 Hits Silicon Valley June 25-27!

Join 7,000+ engineers this June in San Jose at the sensor industry’s biggest event! With 65+ Technical Sessions, 100+ Leading Speakers, 10 new and updated tracks, and 300+ Interactive Exhibits, there’s more opportunity than ever to connect with this booming industry and the technologies driving it. See thousands of the newest technologies in action, learn about the latest applications, and develop invaluable partnerships at the only event dedicated to sensors, connectivity, and systems.
  • Superior audio quality: Highest dynamic range in its product category (103.5dB), best-in-class total harmonic distortion (THD) noise (0.013%), and excellent click-pop performance (-66dBV out of shutdown) via extensive click-pop reduction circuitry
  • Cost-effective: Uses WLP with no expensive PCB VIAs required; Only one external component (bypass capacitor) and one supply voltage needed for most applications; Competing solutions require at least two external components as well as internal VIAs and two supply voltages
  • Plug-and-Play simplicity: No programming required. Requires only a single power supply and auto configures for 35 different clocking configurations and 128 digital audio formats.
  • Compact: Available in a tiny solution size (1.93mm2 WLP); Allows three gain levels with easy connection
  • Highest Class D efficiency: Offers highest efficiency of 92% compared to competing solutions
  • Commentary

Availability and Pricing

The MAX98357 is available for $0.87; MAX98358 is available for $0.87; MAX98357EVSYS#WLP and MAX98358EVSYS#WLP (TQFN also available) evaluation kits are available for $59.50

 

For greater enlightenment and revelations, checkout the MAX98357 and MAX98358 datasheets.

Read more on

Suggested Articles

Solar product achieves stellar efficiency levels.

Flowmeter measures and monitors small to medium sized flow of conductive liquids.

100% solid-state polymer electrolytic membranes offer advantages over standard liquid electrolytes.