MAX98361
Info : RECOMMENDED FOR NEW DESIGNS
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MAX98361

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

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One-of-a-Kind Filterless, High-Performance Class-D Amplifier in a Tiny WLP Package with no Vias or Programming Required

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $0.78
Features
  • Simple Plug-and-Play Design
  • Single-Supply Operation (2.5V to 5.5V)
  • 3.2W Output Power into 4Ω at 5V
  • 2.2mA Quiescent Current
  • 1ms Turn-On Time (for MAX98361A and MAX98361B)
  • 92% Efficiency (RL = 8Ω, THD+N = 10%)
  • 10μVRMS Output Noise
  • 110dB Dynamic Range
  • Low 0.009% THD+N at 1kHz
  • No MCLK Required
  • Sample Rates of 8kHz to 96kHz
  • Supports Left, Right, or (Left/2 + Right/2) Output in I2S and Left-Justified Modes
  • Sophisticated Edge Rate Control Enables Filterless Class-D Outputs
  • 81dB PSRR at 217Hz
  • 1.5μA Standby Current Allows Elimination of GPIO for EN Pin
  • 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
  • Available in Space-Saving Package: 9-Pin WLP (0.4mm Pitch) 
  • 3.69mm2 Solution Size for WLP With A Single Bypass Capacitor
Additional Details
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The MAX98361A/B/C/D is an easy-to-use, low-cost, digital pulse-code modulation (PCM) 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 audio. Furthermore, a novel pinout allows customers to use the cost-effective WLP package with no need for expensive vias.

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, and 96kHz 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 MAX98361A and MAX98361B have fast 1ms turn-on times while the MAX98361C and MAX98361D 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

  • Single Li-ion Cell/5V Devices
  • Smart Speakers
  • Notebook Computers
  • IoT Devices
  • Gaming Devices (Audio and Haptics)
  • Smartphones
  • Tablets
  • Cameras
Part Models 8
1ku List Price Starting From $0.78

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

MAX98361BEVSYS-WLP

Evaluation System for the MAX98361

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MAX98361BEVSYS-WLP

Evaluation System for the MAX98361

Evaluation System for the MAX98361

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (-3dB, 3dB, 6dB, 9dB, and 12dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Low EMI
  • Complete Hardware System with Easy Setup, No Tools or Special Software Required

Product Detail

The MAX98361 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98361A/B/C/D mono Class-D audio amplifiers. The EV system consist of a MAX98361 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. MAX98361A and MAX98361C support the standard I2S interface, and MAX98361B and MAX98361D support standard left-justified mode. All MAX98361 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides the USB-to-PCM interface in addition to the 1.8V VDDIO supply needed to evaluate the DEV board. The MAX98361 DEV board requires one additional supply input, 2.5V to 5.5V (VDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Single Li-ion Cell/5V Devices
  • Smart Speakers
  • Notebook Computers
  • IoT Devices
  • Gaming Devices (Audio and Haptics)
  • Smartphones
  • Tablets
  • Cameras

MAX98361CEVSYS-WLP

Evaluation System for the MAX98361

zoom

MAX98361CEVSYS-WLP

Evaluation System for the MAX98361

Evaluation System for the MAX98361

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (-3dB, 3dB, 6dB, 9dB, and 12dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Low EMI
  • Complete Hardware System with Easy Setup, No Tools or Special Software Required

Product Detail

The MAX98361 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98361A/B/C/D mono Class-D audio amplifiers. The EV system consist of a MAX98361 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. MAX98361A and MAX98361C support the standard I2S interface, and MAX98361B and MAX98361D support standard left-justified mode. All MAX98361 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides the USB-to-PCM interface in addition to the 1.8V VDDIO supply needed to evaluate the DEV board. The MAX98361 DEV board requires one additional supply input, 2.5V to 5.5V (VDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Single Li-ion Cell/5V Devices
  • Smart Speakers
  • Notebook Computers
  • IoT Devices
  • Gaming Devices (Audio and Haptics)
  • Smartphones
  • Tablets
  • Cameras

MAX98361AEVSYS-WLP

Evaluation System for the MAX98361

zoom

MAX98361AEVSYS-WLP

Evaluation System for the MAX98361

Evaluation System for the MAX98361

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (-3dB, 3dB, 6dB, 9dB, and 12dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Low EMI
  • Complete Hardware System with Easy Setup, No Tools or Special Software Required

Product Detail

The MAX98361 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98361A/B/C/D mono Class-D audio amplifiers. The EV system consist of a MAX98361 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. MAX98361A and MAX98361C support the standard I2S interface, and MAX98361B and MAX98361D support standard left-justified mode. All MAX98361 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides the USB-to-PCM interface in addition to the 1.8V VDDIO supply needed to evaluate the DEV board. The MAX98361 DEV board requires one additional supply input, 2.5V to 5.5V (VDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Single Li-ion Cell/5V Devices
  • Smart Speakers
  • Notebook Computers
  • IoT Devices
  • Gaming Devices (Audio and Haptics)
  • Smartphones
  • Tablets
  • Cameras

MAX98361DEVSYS-WLP

Evaluation System for the MAX98361

zoom

MAX98361DEVSYS-WLP

Evaluation System for the MAX98361

Evaluation System for the MAX98361

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (-3dB, 3dB, 6dB, 9dB, and 12dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Low EMI
  • Complete Hardware System with Easy Setup, No Tools or Special Software Required

Product Detail

The MAX98361 evaluation system (EV system) is a fully assembled and tested system that evaluates the MAX98361A/B/C/D mono Class-D audio amplifiers. The EV system consist of a MAX98361 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. MAX98361A and MAX98361C support the standard I2S interface, and MAX98361B and MAX98361D support standard left-justified mode. All MAX98361 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides the USB-to-PCM interface in addition to the 1.8V VDDIO supply needed to evaluate the DEV board. The MAX98361 DEV board requires one additional supply input, 2.5V to 5.5V (VDD) when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications

  • Single Li-ion Cell/5V Devices
  • Smart Speakers
  • Notebook Computers
  • IoT Devices
  • Gaming Devices (Audio and Haptics)
  • Smartphones
  • Tablets
  • Cameras

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