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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 ›
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，VVBAT = 4.3V
- 5.1W @ 4Ω，VVBAT = 4.3V
- 10% THD+N时的输出功率：
- 6.2W @ 8Ω负载，VVBAT = 4.3V
- 6.2W @ 4Ω，VVBAT = 4.3V
- 系统效率
- 82% @ 1.2W，8Ω负载，VVBAT = 3.7V
- 86% @ 0.45W，8Ω负载，VVBAT = 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
| # Channels | 1 |
| Class | Boosted/D Boosted/G D DG |
| Spkr. Amp. VCC (V) (min) | 2.6 |
| Spkr. Amp. VCC (V) (max) | 5.5 |
| Spkr. Amp. ICC (mA) (typ) | 2.5 |
| POUT into 4Ω @ 1% THD+N (W) (min) | 4.9 |
| POUT into 4Ω @ 10% THD+N (W) (min) | 6.1 |
| POUT into 8Ω @ 1% THD+N (W) (min) | 5.1 |
| POUT 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) | $1.95 @1k |
技术文档
| 数据资料 | 增强型D类放大器，集成动态扬声器管理 | Jul 13, 2020 |
单击下面的标题以查看详情页面
PUI Audio Customer Success Story ›
Related Videos
Why Are DSM Smart Amplifiers Valuable? What is DSM and How Does It Work? Micro Speaker 101 Is DSM a Fit for My System? What is the Speaker Laser Characterization Process? What is Speaker Laser Characterization and Why Do I Need It? Essential Analog Toolkit: Audio Amplifiers 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
PUI Audio Customer Success Story ›
Related Videos
Why Are DSM Smart Amplifiers Valuable? What is DSM and How Does It Work? Micro Speaker 101 Is DSM a Fit for My System? What is the Speaker Laser Characterization Process? What is Speaker Laser Characterization and Why Do I Need It? Essential Analog Toolkit: Audio Amplifiers参量
| # Channels | 1 |
| Class | Boosted/D Boosted/G D DG |
| Spkr. Amp. VCC (V) (min) | 2.6 |
| Spkr. Amp. VCC (V) (max) | 5.5 |
| Spkr. Amp. ICC (mA) (typ) | 2.5 |
| POUT into 4Ω @ 1% THD+N (W) (min) | 4.9 |
| POUT into 4Ω @ 10% THD+N (W) (min) | 6.1 |
| POUT into 8Ω @ 1% THD+N (W) (min) | 5.1 |
| POUT 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) | $1.95 @1k |
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，VVBAT = 4.3V
- 5.1W @ 4Ω，VVBAT = 4.3V
- 10% THD+N时的输出功率：
- 6.2W @ 8Ω负载，VVBAT = 4.3V
- 6.2W @ 4Ω，VVBAT = 4.3V
- 系统效率
- 82% @ 1.2W，8Ω负载，VVBAT = 3.7V
- 86% @ 0.45W，8Ω负载，VVBAT = 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 ›
技术文档
| 数据资料 | 增强型D类放大器，集成动态扬声器管理 | Jul 13, 2020 |
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