EUA2839-具有EQ、3band-AGL、3D、耳放和线性驱动的20W立体声数字音频功率放大器 DataSheet  

概述
EUA2839是一款含有4个半桥功率为20W的数字音频功率放大器。EUA2839的所有时钟都由外部源提供。一个串行数据输入端口允许处理多达两个分立的音频通道，并无缝集成到大多数数字音频处理器。外部设备通过双向I2C接口读取其内部寄存器的状态或写寄存器来更改其内部寄存器的状态。
先进的EMI抑制技术只需在输出端使用廉价的磁珠滤波器便可以满足系统成本降低的电磁兼容（EMC）的要求。
EUA2839还具有短路保护和过热保护的功能，用于防止其由于发生故障而受到损坏。EUA2839使用的是高热效率的48引脚TQFP封装。

特点
• 音频输入/输出
- 宽电源电压： 8 V至 26 V
- 数字电源：3.3V
- 电源电压为18V，负载电阻为8Ω，两个通道输出功率各为20W
- 支持8 kHz~192 kHz采样率的串行音频输入（左对齐/右对齐/I2S）
- 双向I2C接口
- 从机地址选择引脚
- 支持3线I2S模式（不需要MCLK时钟）
- 支持耳放和线性驱动
• 音频处理
- 去直流滤波器
- 从24dB到静音的通道音量控制
- 喇叭有20个双二阶结构音效均衡器
- 可编程3段自动增益限制
- 支持3D效果
• 优点
- 均衡器：进行音色加工和美化
- 动态范围控制：保护喇叭以及提供夜间模式
- 软静音控制
- 自动检测：自动检测采样率变化
- 过热保护和短路保护
• 采用TQFP-48 封装
• 符合RoHS认证，100%无铅，无卤素

应用
• 液晶电视机
• 低成本音频设备
• 音箱

EUA2839-20W Stereo Digital Audio Power Amplifier with EQ, 3-Band AGL, 3D and Capless HP/Line Driver 

Description
The EUA2839 is a 20-W, digital audio power amplifier with 4 half-bridged power drivers. The EUA2839 is a slave device that all clocks are provided by the external sources. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors. A bidirectional I2C interface allows reading or writing to change the internal register status.
The EUA2839 has integrated an advanced headphone amplifier and line driver to increase system-level integration and reduce total solution costs. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements for system cost reduction.
The EUA2839 also features short-circuit and thermal protection preventing the device from being damaged during a fault condition. The EUA2839 is available in thermally efficient 48-pin LQFP package.

Feature
• Audio Input/Output
- Wide Power Supply Voltage: 8 V to 26 V
- Digital Supply: 3.3V
- 20W/ch an 8-Ω Load from an 18-V Supply
- 40W an 4-Ω Mono load from an 18-V supply
- Supports 8 kHz - 192 kHz Sample Rates Serial
Audio Input (LJ/RJ/I2S)
- Bidirectional I2C interface
- Slave Address Pin
- Support 3-wire I2S Mode (No MCLK Required)
- Capless Headphone Amplifier/Line Driver
• Audio Processing
- DC Blocking Filters
- Channel Volume Control 24 dB to mute
- 20 Biquads for Speaker EQ
- Programmable 3-Band Automatic Gain Limiting (AGL)
- 3D Effects
• Benefits
- EQ: Speaker Equalization Improves Audio Performance
- DRC: Enables Speaker Protection and Night-Mode Listening
- Soft Mute
- Auto detect: Automatically Detects Sample-rate Changes
- Thermal and short circuit protection
• Available in LQFP-48 (EP) Package
• RoHS compliant and 100% lead(Pb)-free Halogen-Fre

Application
• LCD TV
• Low Cost Audio Equipment
• Sound Bar