Analog Devices / Maxim Integrated MAX98363 SoundWire® Class D Amplifiers

Analog Devices MAX98363 SoundWire® Class D Amplifiers feature industry-leading Class AB audio performance with Class D efficiency. The tiny, low-cost, input Class D mono amplifiers incorporate an internal tone generator, interrupt control, and selectable slew-time settings for SoundWire data output PHY. A novel pinout provides users a way to implement the cost-effective wafer-level package (WLP) with no need for expensive in-pad vias.

Analog Devices MAX98363 SoundWire class D amplifiers support a MIPI SoundWire v1.2-compatible digital audio and control data interface. The digital interface is highly flexible and facilitates a variety of input clock frequencies. Selectable slew-time controls on the SoundWire data output PHY minimize EMI on a range of capacitive bus loads. A 1.8V nominal voltage supply operates the digital interface, which can be supplied externally or generated by an internal LDO. Furthermore, an internal tone generator, with various frequency options, allows in-factory testing or system boot-up sounds during system power-up.

The MAX98363 is specified over the -40°C to +85°C temperature range. and is available in a space-saving 9-Bump WLP package.

Features

  • Single-supply operation (2.5V to 5.5V) for the MAX98363A/B
  • 3.2W output power into 4Ω at 5V, THD+N = 10%
  • 12.3mW quiescent power with external DVDDIO
  • MIPI SoundWire v1.2 compliant
  • Programmable slew rate on soundwire data output to help minimize EMI
  • 92% efficiency (RL = 8Ω, THD+N = 10%)
  • 12.8μVRMS output noise
  • 108.5dB dynamic range
  • Low 0.014% THD+N at 1kHz
  • Sophisticated edge-rate control enables filterless class D outputs
  • 82dB PSRR at 217Hz
  • Low RF susceptibility rejects TDMA noise from GSM radios
  • Class D switching frequency trimmed to 5% for better EMI planning
  • Extensive click-and-pop reduction circuitry
  • Robust short-circuit and thermal protection
  • Internal tone generator for in-factory testing
  • Available in space-saving 9-Bump WLP (1.528mm x 1.528mm, 0.4mm pitch) package

Applications

  • Notebook computers
  • Tablets
  • IoT devices
  • Gaming devices (audio and haptics)
  • Smart speakers
  • Smartphones
  • Single Li-ion cell/5V devices

Simplified Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX98363 SoundWire® Class D Amplifiers

Analog Devices / Maxim Integrated MAX98363 SoundWire® Class D Amplifiers