主页 音频 音频放大器 扬声器放大器
主页
音频
音频放大器
扬声器放大器

LM48310

正在供货

具有 12dB 固定增益和可同步振荡器的 2.6W 单声道模拟输入 D 类音频放大器

立即订购
数据表

LM48310

正在供货
数据表 立即订购

产品详情

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.4 Load (min) (Ω) 4 Output power (W) 2.6 SNR (dB) 97 THD + N at 1 kHz (%) 0.03 Iq (typ) (mA) 3.2 Control interface Hardware Closed/open loop Open Analog supply (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 PSRR (dB) 82 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.4 Load (min) (Ω) 4 Output power (W) 2.6 SNR (dB) 97 THD + N at 1 kHz (%) 0.03 Iq (typ) (mA) 3.2 Control interface Hardware Closed/open loop Open Analog supply (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 PSRR (dB) 82 Operating temperature range (°C) -40 to 85
WSON (DSC) 10 9 mm² 3 x 3
  • Passes FCC Class B Radiated Emissions with 20 inches of cable
  • E2S System Reduces EMI while Preserving Audio Quality and Efficiency
  • Output Short Circuit Protection with Auto-Recovery
  • Stereo Class D Operation
  • No Output Filter Required
  • Internally Configured Gain (12dB)
  • Synchronizable Oscillator for Multi-Channel Operation
  • Low Power Shutdown Mode
  • Minimum External Components
  • "Click and Pop" Suppression
  • Micro-Power Shutdown
  • Available in Space-Saving WSON Package

Key Specifications

  • Efficiency at 3.6V, 400mW into 8Ω 85% (typ)
  • Efficiency at 5V, 1W into 8Ω 88% (typ)
  • Quiescent Power Supply Current at 5V 3.2mA
  • Power Output at VDD = 5V, RL = 4Ω, THD+N ≤ 10% 2.6W (typ)
  • Power Output at VDD = 5V, RL = 8Ω, THD+N ≤ 10% 1.6W (typ)
  • Shutdown Current 0.01μA (typ)

All trademarks are the property of their respective owners.

  • Passes FCC Class B Radiated Emissions with 20 inches of cable
  • E2S System Reduces EMI while Preserving Audio Quality and Efficiency
  • Output Short Circuit Protection with Auto-Recovery
  • Stereo Class D Operation
  • No Output Filter Required
  • Internally Configured Gain (12dB)
  • Synchronizable Oscillator for Multi-Channel Operation
  • Low Power Shutdown Mode
  • Minimum External Components
  • "Click and Pop" Suppression
  • Micro-Power Shutdown
  • Available in Space-Saving WSON Package

Key Specifications

  • Efficiency at 3.6V, 400mW into 8Ω 85% (typ)
  • Efficiency at 5V, 1W into 8Ω 88% (typ)
  • Quiescent Power Supply Current at 5V 3.2mA
  • Power Output at VDD = 5V, RL = 4Ω, THD+N ≤ 10% 2.6W (typ)
  • Power Output at VDD = 5V, RL = 8Ω, THD+N ≤ 10% 1.6W (typ)
  • Shutdown Current 0.01μA (typ)

All trademarks are the property of their respective owners.

The LM48310 is a single supply, high efficiency, mono, 2.6W, filterless switching audio amplifier. The LM48310 features TI’s Enhanced Emissions Suppression (E2S) system, that features a unique patent-pending ultra low EMI, spread spectrum, PWM architecture, that significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system improves battery life, reduces external component count, board area consumption, system cost, and simplifying design.

The LM48310 is designed to meet the demands of portable multimedia devices. Operating from a single 5V supply, the device is capable of delivering 2.6W of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM48310 offers two logic selectable modulation schemes, fixed frequency mode, and an EMI suppressing spread spectrum mode. The E2S system includes an advanced, patent-pending edge rate control (ERC) architecture that further reduce emissions by minimizing the high frequency component of the device output, while maintaining high quality audio reproduction (THD+N = 0.03%) and high efficiency (η = 88%). The LM48310 also features a SYNC_IN input and SYNC_OUT, which allows multiple devices to operate with the same switching frequency, eliminating beat frequencies and any other interference caused by clock intermodulation.

The LM48310 features high efficiency compared to conventional Class AB amplifiers, and other low EMI Class D amplifiers. When driving and 8Ω speaker from a 5V supply, the device operates with 88% efficiency at PO = 1W. The gain of the LM48310 is internally set to 12dB, further reducing external component count. A low power shutdown mode reduces supply current consumption to 0.01μA.

Advanced output short circuit protection with auto-recovery prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.

The LM48310 is a single supply, high efficiency, mono, 2.6W, filterless switching audio amplifier. The LM48310 features TI’s Enhanced Emissions Suppression (E2S) system, that features a unique patent-pending ultra low EMI, spread spectrum, PWM architecture, that significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system improves battery life, reduces external component count, board area consumption, system cost, and simplifying design.

The LM48310 is designed to meet the demands of portable multimedia devices. Operating from a single 5V supply, the device is capable of delivering 2.6W of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM48310 offers two logic selectable modulation schemes, fixed frequency mode, and an EMI suppressing spread spectrum mode. The E2S system includes an advanced, patent-pending edge rate control (ERC) architecture that further reduce emissions by minimizing the high frequency component of the device output, while maintaining high quality audio reproduction (THD+N = 0.03%) and high efficiency (η = 88%). The LM48310 also features a SYNC_IN input and SYNC_OUT, which allows multiple devices to operate with the same switching frequency, eliminating beat frequencies and any other interference caused by clock intermodulation.

The LM48310 features high efficiency compared to conventional Class AB amplifiers, and other low EMI Class D amplifiers. When driving and 8Ω speaker from a 5V supply, the device operates with 88% efficiency at PO = 1W. The gain of the LM48310 is internally set to 12dB, further reducing external component count. A low power shutdown mode reduces supply current consumption to 0.01μA.

Advanced output short circuit protection with auto-recovery prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.

open-in-new 查找其他 扬声器放大器
下载 观看带字幕的视频 视频

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 4
类型 标题 下载最新的英语版本 日期
* 数据表 Ultra-Low EMI, Filterless, 2.6W, Mono, Class D Audio Power Amplifier w/E2S 数据表 (Rev. D) 2013年 5月 1日
应用手册 Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 2019年 8月 26日
应用手册 AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 2019年 6月 27日
应用手册 AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 2013年 5月 1日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

模拟工具

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在 PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)
发送申请
封装 引脚 下载
WSON (DSC) 10 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

视频