MAX98360A/B/C/D

PRODUCTION

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

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

Part Models: 4
1ku List Price: Starting From $1.05

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Part Details

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 MAX98360A and MAX98360B)
92% Efficiency (R_L = 8Ω, THD+N = 10%)
10μV_RMS 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) or 10-Pin FC2QFN (0.5mm Pitch)
3.69mm² Solution Size for WLP With A Single Bypass Capacitor

The MAX98360A/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 MAX98360A and MAX98360B have fast 1ms turn-on times while the MAX98360C and MAX98360D 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.

MAX98360 Version Management

	Ramping		Frame Sync Pulse on LRCLK		50% Duty Cycle on LRCLK
	Turn-On/Off Ramp	Start-Up Time	Format	BCLK Active Edge	Format	BCLK Active Edge
MAX98360A	Ramp Disabled	1ms	TDM	rising	I²S	rising
MAX98360B	Ramp Disabled	1ms	TDM	falling	LJ	rising
MAX98360C	Ramp Enabled	13ms	TDM	rising	I²S	rising
MAX98360D	Ramp Enabled	13ms	TDM	falling	LJ	rising

Applications

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

There is a newer version of this part available

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

Part Models: 4
1ku List Price: Starting From $1.05

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX98360AEFB+	10-LFCSP-2X2X0.55	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX98360AEFB+T	10-LFCSP-2X2X0.55	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX98360AENL+	9-WLCSP-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX98360AENL+T	9-WLCSP-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

Device Drivers 1

MAX98357 GitHub Linux Driver Source Code

Hardware Ecosystem

Parts	Product Life Cycle	Description
Audio Amplifiers 2
MAX98357A	PRODUCTION	Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance
MAX98357B	PRODUCTION	Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance

Parts	Product Life Cycle	Description
MAX98365	RECOMMENDED FOR NEW DESIGNS	Tiny, Cost-Effective, 14V Plug-and-Play Digital Class-D Amplifier

Tools & Simulations

IBIS Model 1

MAX98360A IBIS Model

Evaluation Kits

Evaluation System for the MAX98360A/MAX98360B/MAX98360C/MAX98360D

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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 Details

The MAX98360 Evaluation Systems (EV Systems) are fully assembled and tested systems that evaluate the MAX98360A/B/C/D mono Class D audio amplifiers. The EV Systems consist of a MAX98360 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. MAX98360A and MAX98360C support the standard I²S interface, and MAX98360B and MAX98360D support standard leftjustified mode. All MAX98360 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides the USB-to-PCM interface in addition to the 1.8V V_DDIOsupply needed to evaluate the DEV Board. The MAX98360 DEV Board requires one additional supply input, 2.5V–5.5V (V_DD) when evaluating using the AUDINT3 board.

Applications

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

Resources

MAX98360BEVSYS-WLP ODB Files - Design Files
1/1/0001

Evaluation Systems for the MAX98360A/MAX98360B/MAX98360C/MAX98360D

Buy Now View Details

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 Details

The MAX98360 evaluation systems (EV systems) are fully assembled and tested systems that evaluate the MAX98360A/B/C/D mono Class D audio amplifiers. The EV systems consist of a MAX98360 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. The MAX98360A and MAX98360C support the standard I2S interface, and the MAX98360B and MAX98360D support standard leftjustified mode. All of the MAX98360 variants support an 8-channel TDM digital audio interface.

The AUDINT3 board provides the USB-to-PCM interface, as well as the 1.8V V_DDIO supply needed to evaluate the DEV board. The MAX98360 DEV board requires one additional supply input, 2.5V to 5.5V (V_DD), when evaluating using the AUDINT3 board. Figure 1 details the DEV board and the AUDINT3 board.

Applications