MAX98390
Boosted Class-D Amplifier with Integrated Dynamic Speaker Management
Unleash the Potential of Your Microspeakers—2.5x the Loudness and Deeper Bass with Industry Leading Power Consumption
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Overview
Features and Benefits
- Integrated Speaker Current and Voltage Sense Requires no External Components
- Integrated Programmable 10V Boost Converter
- Bypass Mode
- Envelope Tracking
- Integrated Dynamic Speaker Management
- Thermal Protection
- Excursion Protection
- Low-Frequency Extension
- 8-Band Parametric Equalizer
- Dynamic Range Compression
- Perceptual Power Reduction
- Debuzzer
- Stereo Bass Management
- Ultra-Low Noise Floor
- 10µV Output Noise
- 116dB Dynamic Range
- Low Distortion—0.01% THD+N
- Output Power at 1% THD+N, VVBAT = 4.3V
- 5.1W into 8Ω
- 5.1W into 4Ω
- Output Power at 10% THD+N, VVBAT = 4.3V
- 6.2W into 8Ω
- 6.2W into 4Ω
- System Efficiency
- 82% at 1.2W into 8Ω, VVBAT = 3.7V
- 86% at 0.45W into 8Ω, VVBAT = 3.7V
- Dynamic Speaker Output FET Scaling
- 2.65V to 5.5V Battery Voltage Range
- I2S/16-Channel TDM and I2C Interfaces
- Class-D Edge Rate Control Enables Filterless Operation
- Advanced Brownout-Protection Engine
- Extensive Click-and-Pop Suppression
- Robust Short-Circuit and Thermal Protection
- Space-Saving, 30-Bump WLP Package (2.468mm x 2.968mm, 0.5mm Pitch) or 36-Bump WLP Package (2.418mm x 2.608mm, 0.4mm Pitch)
Product Details
The MAX98390 is a high-efficiency mono Class-D DSM smart amplifier that features an integrated boost converter, integrated Dynamic Speaker Management™, and FET scaling for higher-efficiency at low output power.
The maximum boost converter output voltage is programmable from 6.5V to 10V in 0.125V increments from a battery voltage as low as 2.65V. The boost converter supports bypass mode for lower quiescent current and improved mid-power efficiency as well as envelope tracking which automatically adjusts the output voltage for maximum efficiency. The boosted supply efficiently delivers up to 6.2W at 10% THD+N into a 4Ω load.
Integrated IV sense and Dynamic Speaker Management allows louder, fuller audio while protecting the speaker against damage and improving sound quality.
The PCM interface supports I2S, left-justified, and 16-channel TDM formats as a slave or master device with I2C control. Either BCLK or MCLK can be used as the internal clock source providing system level flexibility.
Thermal and other status data can also be read from the I2C interface.
Patented active emissions limiting edge rate and overshoot control circuitry minimizes EMI and eliminates the need for output filtering found in traditional Class-D devices.
A flexible brownout-detection engine (BDE) can be programmed to initiate various current limiting, signal limiting, and clip functions to prevent dips in battery voltage. Threshold, hysteresis, and attack-and-release rates are programmable.
The MAX98390C is available in a 0.4mm pitch, 36-bump wafer-level package. The MAX98390D is available in a 0.5mm pitch, 30-bump wafer-level package. They are specified over the extended -40°C to +85°C temperature range.
Design Solution: Unleash the Full Potential of Your Micro Speakers ›
Applications
- Smartphones
- Tablets
- Notebook Computers
- Single Li-ion Cell Devices
- IoT Devices
- Toys
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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MAX98390 Reliability Data1/30/2023
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Why Are DSM Smart Amplifiers Valuable?2/27/2023 -
How Does DSM Improve Reliability2/27/2023 -
DSM Smart Amp Overview Video Training Series2/27/2023SERIES -
What is DSM and How Does It Work?2/27/2023 -
Micro Speaker 1012/27/2023 -
Designing with DSM Video Training Series2/27/2023SERIES -
Is DSM a Fit for My System?2/27/2023 -
Sending Your Final Speaker for Laser Calibration2/27/2023 -
Debuzzer2/27/2023 -
DSM Evaluate2/27/2023 -
DSM Sound Studio User's Guide for the MAX98390 Video Training Series2/27/2023SERIES -
Getting started with MAX98390EVSYS2/27/2023 -
Quick Demo2/27/2023 -
Extract- Automated Parameter Extraction and Setting Limits2/27/2023 -
Tune2/27/2023 -
Perceptual Power Reduction2/27/2023 -
Go! Sending Your Speaker to Maxim for Laser Characterization2/27/2023 -
What is Speaker Laser Characterization and Why Do I Need It?2/27/2023 -
Essential Analog Toolkit: Audio Amplifiers11/30/2022
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX98390CEWX+ | Material Declaration | Reliability Data | 36-WLCSP-N/A | |
| MAX98390CEWX+T | Material Declaration | Reliability Data | 36-WLCSP-N/A | |
| MAX98390DEWV+ | Material Declaration | Reliability Data | 30-WLCSP-N/A | |
| MAX98390DEWV+T | Material Declaration | Reliability Data | 30-WLCSP-N/A | |
| MAX98390EWX+ | Material Declaration | Reliability Data | 36-WLCSP-N/A | |
| MAX98390EWX+T | Material Declaration | Reliability Data | 36-WLCSP-N/A | |
| Wafer Fabrication Data | MAX98390 Reliability Data |
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.