MAX98365
Info : RECOMMENDED FOR NEW DESIGNS
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MAX98365

Tiny, Cost-Effective, 14V Plug-and-Play Digital Class-D Amplifier

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Easiest-to-Use and Smallest 14V Plug-and-Play Class-D Amplifier

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $0.88
Features
  • Simple Plug-and-Play Design
  • Wide Amplifier Supply Range (3V to 14V)
  • 13.8W Output Power into 8Ω at 14V
  • 17.6W Output Power into 6Ω at 14V
  • 30mW Quiescent Power
  • 1ms Turn-On Time (for MAX98365A and MAX98365B)
  • 92.7% Efficiency (7.0W into RL = 8Ω, PVDD = 12V)
  • 22µVRMS Output Noise
  • 111.5dB Dynamic Range
  • -85dB THD+N at 1kHz
  • No MCLK Required
  • Sample Rates of 8kHz to 192kHz
  • Supports Left, Right, or (Left/2 + Right/2) Output in I2S and Left-Justified Modes
  • Sophisticated Edge Rate Control Enables Filterless Class-D Outputs
  • Low 0.5µA Shutdown Current 
  • Low RF Susceptibility Rejects TDMA Noise from GSM Radios
  • Class-D Switching Frequency Trimmed to 6% for Better EMI Planning
  • Extensive Click-and-Pop Reduction Circuitry
  • Robust Short-Circuit and Thermal Protection
  • Available in Space-Saving Package: 12 Bump, WLP (1.21mm x 1.78mm, 0.4mm Pitch)
Additional Details
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The MAX98365 is an easy-to-use, low-cost, digital input Class-D amplifier that provides industry-leading, Class-AB audio performance with Class-D efficiency. The digital audio interface automatically recognizes different PCM and TDM clocking schemes which eliminates the need for I2C programming: Simply supply power, LRCLK, BCLK, and digital audio to generate sound. Furthermore, a novel pinout allows customers to use the cost-effective wafer-level package (WLP) with no need for expensive in-pad vias. A wide 3V to 14V supply range allows the device to deliver 13.8W into an 8Ω load.

The digital audio interface is highly flexible. The devices support I2S, left-justified, and 8-channel time division multiplexed (TDM) data formats. The digital audio interface accepts 8kHz, 16kHz, 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, and 192kHz sample rates. Data words can be 16-bit, 24-bit, or 32-bit in I2S and left-justified modes and 16-bit or 32-bit in TDM mode.

Digital audio interface input thresholds are ideal for interfacing to 1.2V and 1.8V logic. The devices can tolerate logic input voltages up to 5.5V.

The MAX98365A and MAX98365B have fast 1ms turn-on times while the MAX98365C and MAX98365D ramp the volume over 13ms during turn-on and turn-off.

The devices eliminate the need for the external MCLK signal that is typically used for PCM communication. This reduces EMI and possible board coupling issues in addition to reducing the size and pin count. The devices also feature a very high wideband jitter tolerance (12ns, typ) on BCLK and LRCLK to provide robust operation.

Active emissions-limiting, edge-rate limiting, and overshoot control circuitry greatly reduce EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class-D devices and reduces the component count of the solution.

The devices are specified over the -40°C to +85°C temperature range.

Applications

  • Smart Speakers
  • Notebook Computers
  • IoT Devices
  • Gaming Devices (Audio and Haptics)
  • Smartphones
  • Tablets
  • Cameras
Part Models 8
1ku List Price Starting From $0.88

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX98365AEWC+
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MAX98365AEWC+T
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MAX98365BEWC+
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MAX98365BEWC+T
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MAX98365CEWC+
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MAX98365CEWC+T
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MAX98365DEWC+
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MAX98365DEWC+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

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MAX98365AEVSYS

Evaluation System for the MAX98365

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MAX98365AEVSYS

Evaluation System for the MAX98365

Evaluation System for the MAX98365

Features and Benefits

  • 3V to 14V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (9.5dB, 12.5dB, 15.5dB, 18.5dB, and 21.5dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filter-Less Operation
  • Low EMI
  • Complete Hardware System with Easy Setup; No Tools or Special Software Required

Product Detail

The MAX98365 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98365A/B/C/D mono Class-D audio amplifier. The EV system consists of the MAX98365 Development Board (DEV board), Maxim’s Audio Interface Board III (AUDINT3), and a USB cable.

It is recommended that the DEV board be evaluated with the AUDINT3 board, as an EV system. MAX98365A and MAX98365C support the standard I2S interface, and MAX98365B and MAX98365D support standard left-justified mode. All MAX98365 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides a USB-to-PCM interface in addition to a 1.8V VDD supply needed to evaluate the DEV board. The MAX98365 DEV board requires one additional supply input, 3V to 14V (PVDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Cameras
  • Gaming Devices (Audio and Haptics)
  • IoT Devices
  • Notebook Computers
  • Smart Speakers
  • Smartphones
  • Tablets
reference details image

MAX98365DEVSYS

Evaluation System for the MAX98365

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MAX98365DEVSYS

Evaluation System for the MAX98365

Evaluation System for the MAX98365

Features and Benefits

  • 3V to 14V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (9.5dB, 12.5dB, 15.5dB, 18.5dB, and 21.5dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filter-Less Operation
  • Low EMI
  • Complete Hardware System with Easy Setup; No Tools or Special Software Required

Product Detail

The MAX98365 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98365A/B/C/D mono Class-D audio amplifier. The EV system consists of the MAX98365 Development Board (DEV board), Maxim’s Audio Interface Board III (AUDINT3), and a USB cable.

It is recommended that the DEV board be evaluated with the AUDINT3 board, as an EV system. MAX98365A and MAX98365C support the standard I2S interface, and MAX98365B and MAX98365D support standard left-justified mode. All MAX98365 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides a USB-to-PCM interface in addition to a 1.8V VDD supply needed to evaluate the DEV board. The MAX98365 DEV board requires one additional supply input, 3V to 14V (PVDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Cameras
  • Gaming Devices (Audio and Haptics)
  • IoT Devices
  • Notebook Computers
  • Smart Speakers
  • Smartphones
  • Tablets
reference details image

MAX98365CEVSYS

Evaluation System for the MAX98365

zoom

MAX98365CEVSYS

Evaluation System for the MAX98365

Evaluation System for the MAX98365

Features and Benefits

  • 3V to 14V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (9.5dB, 12.5dB, 15.5dB, 18.5dB, and 21.5dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filter-Less Operation
  • Low EMI
  • Complete Hardware System with Easy Setup; No Tools or Special Software Required

Product Detail

The MAX98365 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98365A/B/C/D mono Class-D audio amplifier. The EV system consists of the MAX98365 Development Board (DEV board), Maxim’s Audio Interface Board III (AUDINT3), and a USB cable.

It is recommended that the DEV board be evaluated with the AUDINT3 board, as an EV system. MAX98365A and MAX98365C support the standard I2S interface, and MAX98365B and MAX98365D support standard left-justified mode. All MAX98365 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides a USB-to-PCM interface in addition to a 1.8V VDD supply needed to evaluate the DEV board. The MAX98365 DEV board requires one additional supply input, 3V to 14V (PVDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Cameras
  • Gaming Devices (Audio and Haptics)
  • IoT Devices
  • Notebook Computers
  • Smart Speakers
  • Smartphones
  • Tablets
reference details image

MAX98365BEVSYS

Evaluation System for the MAX98365

zoom

MAX98365BEVSYS

Evaluation System for the MAX98365

Evaluation System for the MAX98365

Features and Benefits

  • 3V to 14V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (9.5dB, 12.5dB, 15.5dB, 18.5dB, and 21.5dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filter-Less Operation
  • Low EMI
  • Complete Hardware System with Easy Setup; No Tools or Special Software Required

Product Detail

The MAX98365 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98365A/B/C/D mono Class-D audio amplifier. The EV system consists of the MAX98365 Development Board (DEV board), Maxim’s Audio Interface Board III (AUDINT3), and a USB cable.

It is recommended that the DEV board be evaluated with the AUDINT3 board, as an EV system. MAX98365A and MAX98365C support the standard I2S interface, and MAX98365B and MAX98365D support standard left-justified mode. All MAX98365 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides a USB-to-PCM interface in addition to a 1.8V VDD supply needed to evaluate the DEV board. The MAX98365 DEV board requires one additional supply input, 3V to 14V (PVDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Cameras
  • Gaming Devices (Audio and Haptics)
  • IoT Devices
  • Notebook Computers
  • Smart Speakers
  • Smartphones
  • Tablets
Reference Designs

Reference Designs 1

MAXREFDES9009 board

MAX98365 8-Channel Reference Design

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MAXREFDES9009

MAX98365 8-Channel Reference Design

MAX98365 8-Channel Reference Design

Features and Benefits

  • True plug-and-play 8-channel digital audio input Class-D amplifier
  • Simple to use and does not require any programming, registers, and I2C
  • Gain is preset to 21.5dB

Just add the following:

  • Power: VDD (1.8V, 3.3V, or 5V), PVDD (3V-14V)
  • Input signal: (digital audio, 16-bit or 32-bit TDM, and 8kHz-192kHz sample rate)
  • 8 Speakers
View Detailed Reference Design external link

Part Used 1

Design & Integration Tools

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