MAX98390

增强型D类放大器，集成动态扬声器管理

释放微型扬声器的潜能——以业界领先的功耗水平实现2.5倍音量和更深层次的低音

产品详情

General Description

The MAX98390 is a high-efficiency mono Class-D DSM smart amplifier that features an integrated boost converter, integrated Dynamic Speaker Management^TM, 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.

Simplified Block Diagram

Enlarge+ Enlarge+

Benefits and Features

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, V_VBAT = 4.3V
- 5.1W into 8Ω
- 5.1W into 4Ω
Output Power at 10% THD+N, V_VBAT = 4.3V
- 6.2W into 8Ω
- 6.2W into 4Ω
System Efficiency
- 82% at 1.2W into 8Ω, V_VBAT = 3.7V
- 86% at 0.45W into 8Ω, V_VBAT = 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)

Applications

Smartphones
Tablets
Notebook Computers
Single Li-ion Cell Devices
IoT Devices
Toys

Dynamic Speaker Management is a trademark of Maxim Integrated Products, Inc.

19-100540; Rev 3; 7/20

请参见参数规范 Speaker Amplifiers

主要特征

请参见参数规范 Speaker Amplifiers

Parametric specs for Speaker Amplifiers

# Channels	1
Class	Boosted/D Boosted/G D DG
Spkr. Amp. V_CC (V) (min)	2.6
Spkr. Amp. V_CC (V) (max)	5.5
Spkr. Amp. I_CC (mA) (typ)	2.5
P_OUT into 4Ω @ 1% THD+N (W) (min)	4.9
P_OUT into 4Ω @ 10% THD+N (W) (min)	6.1
P_OUT into 8Ω @ 1% THD+N (W) (min)	5.1
P_OUT into 8Ω @ 10% THD+N (W) (min)	6.1
Spkr. Amp. Half Pwr. THD+N (%)	0.01
SNR (dB) (A- Weighted)	117
PSRR (dB) (min)	113
Package/Pins	WLP/30 WLP/36
Budgetary Price (See Notes)	2.07

请参见参数规范 Speaker Amplifiers

缩小

简化框图

Technical Docs

	数据资料	增强型D类放大器，集成动态扬声器管理	Jul 13, 2020
	解决方案指南	Unleash the Full Potential of Your Micro Speakers

设计与质量

单击下面的标题以查看详情页面

硬件开发

评估板

MAX98390EVSYS

$178.08

描述

For stereo evaluation and design use a MAX98390EVSYS# board with a MAX98390-ST-AUX# stereo expansion board.

The MAX98390C/D evaluation system (EV system) eval- uates the MAX98390C or the MAX98390D boosted Class D audio amplifier with integrated Dynamic Speaker ManagementTM (DSM) IC. DSM senses the voltage and current at the load and uses patented Maxim algorithms to unlock the full potential of the speaker. The EV sys- tem comprises the MAX98390C or the MAX98390D Development Board (DEV board), Maxim’s Audio Interface Board III (AUDINT3), 5V power supply, reference micro- speaker, USB cable, DSM Sound Studio software, and MAX98390 evaluation software.

It is recommended that the DEV board be evaluated with the AUDINT3 board as an EV system. MAX98390C/D supports standard I²S, left-justified, and TDM digital audio interfaces, as well as I²C for control.

The AUDINT3 board provides 1.8V DVDD, USB-to-PCM, and USB-to-I²C interfaces that are needed to evaluate the DEV board, requiring only a single external power supply for VBAT. The Simplified EV System Block Diagram details the DEV board and the AUDINT3 board.

The easy-to-use DSM Sound Studio software has a simple, yet powerful graphical user interface (GUI) that breaks down the DSM design process into three basic steps: extract, tune, and evaluate. Additionally, DSM Sound Studio provides for a 7 minute quick demo to hear the DSM difference using the included reference microspeaker.

There is also the MAX98390 evaluation software that provides complete access to all hardware registers.

查看详情

特征

Complete Hardware System with Easy Setup, No Tools or Special Equipment Required
Precharacterized Reference Microspeaker Included
Easy-to-Use Graphical User Interfaces Software (Windows^® 7/10 Compatible)
DSM Sound Studio
- Quick Demo Using Included Speaker
- Extract: Speaker Parameter Extraction
- Tune: Full Acoustic Tuning Suite
- Evaluate: Compare Different Tunings
MAX98390 Evaluation Software
- Complete Access to All Hardware Registers

其他资源

DSM MAX98390 eBrief ›

DSM User Guide ›

PUI Audio Customer Success Story ›

评估板

MAX98390EVSYS

数据资料

$178.08

描述

For stereo evaluation and design use a MAX98390EVSYS# board with a MAX98390-ST-AUX# stereo expansion board.

There is also the MAX98390 evaluation software that provides complete access to all hardware registers.

查看详情

特征

Complete Hardware System with Easy Setup, No Tools or Special Equipment Required
Precharacterized Reference Microspeaker Included
Easy-to-Use Graphical User Interfaces Software (Windows^® 7/10 Compatible)
DSM Sound Studio
- Quick Demo Using Included Speaker
- Extract: Speaker Parameter Extraction
- Tune: Full Acoustic Tuning Suite
- Evaluate: Compare Different Tunings
MAX98390 Evaluation Software
- Complete Access to All Hardware Registers

DSM MAX98390 eBrief ›

DSM User Guide ›

PUI Audio Customer Success Story ›

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题，请访问Maxim的支持中心。

参量

Parametric specs for Speaker Amplifiers

# Channels	1
Class	Boosted/D Boosted/G D DG
Spkr. Amp. V_CC (V) (min)	2.6
Spkr. Amp. V_CC (V) (max)	5.5
Spkr. Amp. I_CC (mA) (typ)	2.5
P_OUT into 4Ω @ 1% THD+N (W) (min)	4.9
P_OUT into 4Ω @ 10% THD+N (W) (min)	6.1
P_OUT into 8Ω @ 1% THD+N (W) (min)	5.1
P_OUT into 8Ω @ 10% THD+N (W) (min)	6.1
Spkr. Amp. Half Pwr. THD+N (%)	0.01
SNR (dB) (A- Weighted)	117
PSRR (dB) (min)	113
Package/Pins	WLP/30 WLP/36
Budgetary Price (See Notes)	2.07

See parametric specs for Speaker Amplifiers

主要特征

集成扬声器电流和电压检测，无需外部元件
集成可编程10V升压转换器
- 旁路模式
- 包括跟踪
集成动态扬声器管理
- 热保护
- 冲程保护
- 低频率扩展
- 8波段参数均衡器
- 动态范围压缩
- 感知功率降低
- 蜂音抑制
- 立体声低音管理
超低噪底
- 9μV输出噪声
- 117dB动态范围
低失真—0.01% THD+N
1% THD+N时的输出功率：
- 5.1W @ 8Ω负载，V_VBAT = 4.3V
- 5.1W @ 4Ω，V_VBAT = 4.3V
10% THD+N时的输出功率：
- 6.2W @ 8Ω负载，V_VBAT = 4.3V
- 6.2W @ 4Ω，V_VBAT = 4.3V
系统效率
- 82% @ 1.2W，8Ω负载，V_VBAT = 3.7V
- 86% @ 0.45W，8Ω负载，V_VBAT = 3.7V
动态扬声器输出FET调节
2.65V至5.5V电池电压范围
I²S/16通道TDM和I²C接口
D类摆率控制允许无滤波器操作
高级掉电保护机制
全面的咔嗒/噼噗声抑制
可靠的短路和热保护
节省空间的36焊球WLP封装(6.3mm2，0.4mm焊距)

应用/用途

智能手机
平板电脑
笔记本电脑
单节锂离子电池设备
IoT设备
玩具

描述

MAX98390为高效单声道D类DSM智能放大器，集成升压转换器、动态扬声器管理(Dynamic Speaker Management™)和FET调节，在低输出功率下实现高效率。

升压转换器的最大输出电压可在6.5V至10V范围内设置，步长为0.125V，可以支持低至2.65V的电池电压。升压转换器支持旁路模式，以实现较低静态电流、提高中等功率下的效率，以及包络跟踪，通过自动调节输出电压实现最大效率。负载为4Ω时，升压后的电源可有效提供高达6.2W @ 10% THD+N。

集成IV检测和动态扬声器管理支持更宏亮、更丰富的音频，同时保护扬声器不被损坏且提高音质。

PCM接口支持I²S、左对齐和16通道TDM格式，可作为从机或主控制器，通过I²C控制。无论BCLK还是MCLK均可用作内部时钟源，提供系统级灵活性。

还可利用I2C接口读取温度和其他状态数据。

拥有专利的有源辐射抑制带有摆率和过冲控制电路，最大程度降低EMI，无需传统D类器件中常见的输出滤波。

灵活的掉电检测机制(BDE)可设置为启动各种限流、信号限制和箝位功能，防止电池电压暂降。门限、滞回以及捕获/释放率均可编程。

IC采用0.4mm焊距、36焊球晶圆级封装。器件工作在-40°C至+85°C扩展级温度范围。

Design Solution: Unleash the Full Potential of Your Micro Speakers ›

简化框图

MAX98390: Functional Diagram

Technical Docs

	数据资料	增强型D类放大器，集成动态扬声器管理	Jul 13, 2020
	解决方案指南	Unleash the Full Potential of Your Micro Speakers

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题，请访问Maxim的支持中心。

Subscribe	Description	Examples
EE-Mail	第一时间了解更新的产品、参考设计、设计工具和技术资源等。
MyMaxim电子新闻	电子新闻的内容包括：最受欢迎产品及资源的信息、特定市场信息、相关应用及技术资源等。
活动和推送	第一时间了解相关活动，例如：竞赛、线上研讨会、线下研讨会和展会等。并且了解相关技术培训内容及新的开发工具。

Products
电源管理
传感器
模拟信号
接口
通信
数字电路
嵌入式安全系统
微控制器(MCU)

Markets
工业应用
汽车电子
医疗设备
通信
maxim_web:en/markets/consumer
maxim_web:en/markets/computing
Solar Energy
maxim_web:en/markets/military
物联网（IoT）

INTERACTIVE Data Sheet

MAX98390

增强型D类放大器，集成动态扬声器管理

产品详情

主要特征

应用/用途

简化框图

Technical Docs

设计与质量

支持和培训

参量

主要特征

应用/用途

描述

简化框图

Technical Docs

支持和培训

MAX98390 相关视频