EUA2014-2.5W/CH增强3D音效双声道D类音频放大器  DataSheet
概述
EUA2014 是一款高效率，每个通道具有2.5W功率输出的双声道D类音频放大器，它用一种低噪声filterless PWM的架构，无需输出滤波器。电源电压为5V时，EUA2014能在输出负载为4Ω的扬声器上，单一通道可以输送出2.5W/10%的输出功率及失真度。
EUA2014具有两个独立的关断(Shutdown)控制信号，可以单独关闭左声道或右声道。利用G0与G1两个接脚，可以选择增益为 6、12、18或是24dB。高电源拒斥比(PSRR)以及全差动设计可以有效抑制噪声以及射频(RF)干扰。
EUA2014能够增强3D音效，提高立体声质量。在实际应用上，左右声道非常的靠近，3D enhancement具有扩大并加强不同频带声音效果的功能。
EUA2014采用TQFN封装，适合行动电话或是可携式行动通讯系统使用。
特点
• 变频调变减少EMI干扰
• 输出功率(TQFN封装):
- 负载4Ω，工作电压5V，单一通道输出功率可达2.5W
- 负载8Ω，工作电压5V，单一通道输出功率可达1.5W
- 负载8Ω，工作电压3.6V，单一通道输出功率可达750mW
• 工作电压2.5V到5.5V
• 左声道或右声道具有单独关断(Shutdown)控制信号
• 增益选择: 6、12、18或是24 dB
• 关断(Shutdown)接脚具有内部下拉电阻(Pulldown Resistor=300kΩ)
• 高PSRR :70dB at 217Hz
• 快速启动时间: 10ms
• 操作电压3.6V时，具有4.7mA 低静态电流以及1.5uA关断电流
• 输出短路以及过热关断保护机制
• 3D Enhancement功能
• Space Saving封装:
- 4mm x 4mm TQFN-24封装
• 符合RoHS规范及Pb-Free
应用
• 无线或移动电话及PDA
• 可携式音乐拨放器(Portable Audios)
• 笔记本电脑
EUA2014-2.5W Stereo Class-D Audio Power Amplifier with 3D Enhancement
Description
The EUA2014 is a high efficiency, 2.5W/channel stereo class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter.
Operating from a single 5V supply, EUA2014 is capable of delivering 2.5W/ channel of continuous output power to a 4Ω load with 10% THD+N.
The EUA2014 features independent shutdown controls for each channel. The gain can be ed to 6, 12, 18, or 24 dB utilizing the G0 and G1 gain pins. High PSRR and differential architecture provide increased immunity to noise and RF rectification.
The EUA2014 also includes 3D audio enhancement that improves stereo sound quality. In devices where the left and right speakers are in close proximity, 3D enhancement affects channel specialization, widening the perceived soundstage.
The EUA2014 is available in space-saving TQFN package, is an idea choice for mobile phones and other portable communication devices.
Feature
• Unique Modulation Scheme Reduces EMI Emission
• Output Power By TQFN Package - 2.5W/Ch 4Ω at 5V - 1.5W/Ch 8Ω at 5V - 750mW/Ch 8Ω at 3.6V
• Wide Supply Voltage: 2.5V to 5.5V
• Independent Shutdown Control for Each Channel
• able Gain of 6,12,18 and 24 dB
• Internal Pulldown Resistor On Shutdown Pins
• High PSRR :70dB at 217Hz
• Fast 10ms Startup Time
• Low 4.7mA Quiescent Current at 3.6V Supply and 1.5μA Shutdown Current
• Short-Circuit and Thermal Protection
• 3D Enhancement
• Space Saving Packages - 4mm 4mm TQFN-24 package
• RoHS compliant and 100% lead(Pb)-free
Application
• Wireless or Cellular Handsets and PDAs
• Portable Audios
• Notebook PC |