MAX98357B

PRODUCTION

Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance

Supports I2S and 8-Channel TDM Data

Data Sheet (Rev. 13)
Part Models
4
1ku List Price
Starting From $1.14
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Part Details

  • Single-Supply Operation (2.5V to 5.5V)
  • 3.2W Output Power into 4Ω at 5V
  • 2.4mA Quiescent Current
  • 92% Efficiency (RL = 8Ω, POUT = 1W)
  • 22.8µVRMS Output Noise (AV = 15dB)
  • Low 0.013% THD+N at 1kHz
  • No MCLK Required
  • Sample Rates of 8kHz to 96kHz
  • Supports Left, Right, or (Left/2 + Right/2) Output
  • Sophisticated Edge Rate Control Enables Filterless Class D Outputs
  • 77dB PSRR at 1kHz
  • Low RF Susceptibility Rejects TDMA Noise from GSM Radios
  • Extensive Click-and-Pop Reduction Circuitry
  • Robust Short-Circuit and Thermal Protection
  • Available in Space-Saving Packages: 1.345mm x 1.435mm WLP (0.4mm Pitch) and 3mm x 3mm TQFN
  • Solution Size with Single Bypass Capacitor is4.32mm2

There is a newer version of this part available

MAX98365 RECOMMENDED FOR NEW DESIGNS

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

MAX98357B
Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance
MAX98357A, MAX98357B: Functional Diagram
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Documentation

Data Sheet 1

Design Note 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Audio Amplifiers 2
MAX98358
PRODUCTION PDM Input Class D Audio Power Amplifier
MAX98357A
PRODUCTION Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance
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Tools & Simulations

IBIS Model 1

Evaluation Kits

MAX98357DEVWLP

Evaluation System for the MAX98357A and MAX98357B (WLP)

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Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • Only a Single External Component (VDD Capacitor) Required in Many Applications
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (3dB, 6dB, 9dB, 12dB, and 15dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Optional Class D Output Filters for Ease of Evaluation
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX98357 development board (DEV board) is a fully assembled and tested PCB that evaluates the MAX98357 I2S digital input Class D power amplifier. The DEV board operates from a single 2.5V to 5.5V DC power supply and is capable of delivering 3.2W into a 4Ω load. The device outputs can be connected directly to a speaker load for filterless applications. However, a filter can be added to ease evaluation. The MAX98357A accepts standard I2S data and the MAX98357B accepts left-justified digital audio data. Both versions also support 8-channel TDM audio data.

The MAX98357 evaluation system (EV system) includes the MAX98357 DEV board and Maxim Integrated’s audio interface board (MAXAUDINT001# board).

The MAXAUDINT001# board provides an easy-to-use USB audio-to-I2S converter. This allows for any computer to become a digital audio source, which can be used to evaluate the devices. The MAXAUDINT001# board can also be used to power the MAX98357. This allows for a complete evaluation from a single USB connection.

Applications

  • Cellular Phones
  • Notebook and Netbook Computers
  • Tablets

MAX98357EVSYS#WLP

Evaluation System for the MAX98357A and MAX98357B (WLP)

Buy Now View Details

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • Only a Single External Component (VDD Capacitor) Required in Many Applications
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (3dB, 6dB, 9dB, 12dB, and 15dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Optional Class D Output Filters for Ease of Evaluation
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX98357 development board (DEV board) is a fully assembled and tested PCB that evaluates the MAX98357 I2S digital input Class D power amplifier. The DEV board operates from a single 2.5V to 5.5V DC power supply and is capable of delivering 3.2W into a 4Ω load. The device outputs can be connected directly to a speaker load for filterless applications. However, a filter can be added to ease evaluation. The MAX98357A accepts standard I2S data and the MAX98357B accepts left-justified digital audio data. Both versions also support 8-channel TDM audio data.

The MAX98357 evaluation system (EV system) includes the MAX98357 DEV board and Maxim Integrated’s audio interface board (MAXAUDINT001# board).

The MAXAUDINT001# board provides an easy-to-use USB audio-to-I2S converter. This allows for any computer to become a digital audio source, which can be used to evaluate the devices. The MAXAUDINT001# board can also be used to power the MAX98357. This allows for a complete evaluation from a single USB connection.

Applications

  • Cellular Phones
  • Notebook and Netbook Computers
  • Tablets

MAXAUDINT001

Evaluation Kit for the MAXQ2000/MAX98357A/MAX98357B/MAX98358 and MAX98371

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Features and Benefits

  • USB Powered (+5V)
  • USB-to-I2C (USB CONTROL)
  • USB-to-I2S (USB AUDIO)
  • On-Board Master Clock Sources
  • On-Board LDOs (+1.2V, +1.8V, +3.3V)
  • Compatible with Standard FTDI VCP Drivers
  • Fully Assembled and Tested

Product Details

When used as a component in the MAX98357/MAX98358 dev kit or evsys NO driver is required.

The Maxim Audio Interface 1 (AUDINT1) board provides both an I2C and I2S interface to facilitate the evaluation of compatible Maxim Development (DEV) boards. Maxim DEV boards that are evaluated with the AUDINT1 interface board can require custom GUI software, which is available as a download from Maxim’s evkit-software web page.

The AUDINT1 board and a compatible DEV board are ordered together as an evaluation system (EV system). Ordering information for EV systems is located in the EV system data sheet.

Refer to the appropriate EV system data sheet for quick start and detailed operating instructions.

The AUDINT1 board is provided as part of selected Maxim evaluation systems (EV system) to evaluate Maxim parts only. The use of the AUDINT1 board as a development target is not supported. Refer to the MAXQ2000 evaluation kit data sheet for this purpose.

Applications

  • Battery-Powered and Portable Devices
  • Consumer Electronics
  • Data-Acquisition Systems and Data Loggers
  • Electrochemical and Optical Sensors
  • Gas and Chemical Sensors
  • Home Appliances
  • HVAC
  • Industrial Control
  • Medical Instrumentation
  • Security Sensors
  • Smart Transmitters
  • Thermostats/Humidity Sensors

MAX98357DEVTQFN

Evaluation System for the MAX98357A and MAX98357B (TQFN)

Buy Now View Details

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • Only a Single External Component (VDD Capacitor) Required in Many Applications
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (3db, 6dB, 9dB, 12dB, and 15dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Optional Class D Output Filters for Ease of Evaluation
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX98357 development board (DEV board) is a fully assembled and tested PCB that evaluates the MAX98357 I2S digital input Class D power amplifier. The DEV board operates from a single 2.5V to 5.5V DC power supply and is capable of delivering 3.2W into a 4Ω load. The device outputs can be connected directly to a speaker load for filterless applications. However, a filter can be added to ease evaluation. The MAX98357A accepts standard I2S data and the MAX98357B accepts left-justified digital audio data. Both versions also support 8-channel TDM audio data.

The MAX98357 evaluation system (EV system) includes the MAX98357 DEV board and Maxim Integrated’s audio interface board (MAXAUDINT001#).

The MAXAUDINT001# board provides an easy-to-use USB audio-to-I2S converter. This allows for any computer to become a digital audio source, which can be used to evaluate the devices. The MAXAUDINT001# board can also be used to power the MAX98357. This allows for a complete evaluation from a single USB connection.

Applications

  • Cellular Phones
  • Notebook and Netbook Computers
  • Tablets

MAX98357EVSYSTQFN

Evaluation System for the MAX98357A and MAX98357B (TQFN)

Buy Now View Details

Features and Benefits

  • 2.5V to 5.5V Single-Supply Operation
  • Only a Single External Component (VDD Capacitor) Required in Many Applications
  • I2S, Left-Justified, or TDM Input
  • Five Selectable Gains (3db, 6dB, 9dB, 12dB, and 15dB)
  • Audio Channel Select (Left, Right, and Mono Mix)
  • Filterless Operation
  • Optional Class D Output Filters for Ease of Evaluation
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX98357 development board (DEV board) is a fully assembled and tested PCB that evaluates the MAX98357 I2S digital input Class D power amplifier. The DEV board operates from a single 2.5V to 5.5V DC power supply and is capable of delivering 3.2W into a 4Ω load. The device outputs can be connected directly to a speaker load for filterless applications. However, a filter can be added to ease evaluation. The MAX98357A accepts standard I2S data and the MAX98357B accepts left-justified digital audio data. Both versions also support 8-channel TDM audio data.

The MAX98357 evaluation system (EV system) includes the MAX98357 DEV board and Maxim Integrated’s audio interface board (MAXAUDINT001#).

The MAXAUDINT001# board provides an easy-to-use USB audio-to-I2S converter. This allows for any computer to become a digital audio source, which can be used to evaluate the devices. The MAXAUDINT001# board can also be used to power the MAX98357. This allows for a complete evaluation from a single USB connection.

Applications

  • Cellular Phones
  • Notebook and Netbook Computers
  • Tablets
MAX98357DEVWLP
Evaluation System for the MAX98357A and MAX98357B (WLP)
MAX98357EVSYS#WLP
Evaluation System for the MAX98357A and MAX98357B (WLP)
MAXAUDINT001
Evaluation Kit for the MAXQ2000/MAX98357A/MAX98357B/MAX98358 and MAX98371
MAX98357DEVTQFN
Evaluation System for the MAX98357A and MAX98357B (TQFN)
MAX98357EVSYSTQFN
Evaluation System for the MAX98357A and MAX98357B (TQFN)

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