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发布者:来自网络 发布时间:2019/1/11 阅读:369次    关键字: Audio Power Amplifier
EUA2068-3.3W Mono Class-D Audio Power Amplifier


EUA2068-无破音、最大输出瓦数可调、无声噪声抑制、3.3W单声道D类音频放大器 DataSheet 

概述
EUA2068为单声道、无破音、最大输出瓦数可调、无声噪声抑制、无需滤波器的3.3W D类音频功率放大器,不仅具有D类的高效率,还有独特的无破音功能,可以通过检测输出的破音失真,自动调整系统增益,使用者还可自行调整最大输出瓦数,不仅有效避免了大功率超载输出对喇叭的损坏,在无播音的情况下还会自动滤除噪声,同时带来舒适的听觉感受。EUA2068采用9焊球WCSP封装。

特点
•2.5V到5.5V操作
•为4Ω负载提供3.3W功率输出
•低EMI
•无破音功能
•短路保护及短路结束自动回复功能
•过热保护
•错误DC输出保护
•最大输出瓦数可调
•低静态电流(4mA)与低功耗关断模式(0.5μA)
•POP杂音抑制
•无声噪声抑制
•WCSP-9封装

应用
•行动电话
•个人媒体播放器
•掌上游戏机‧行动电话
•个人媒体播放器
•掌上游戏机


EUA2068-3.3W Mono Class-D Audio Power Amplifier with Non-Clip, Power Limit and Noise Gate 

Description
The EUA2068 is a high efficiency, 3.3W mono class-D audio power amplifier with Non-Clip, Power Limit and Noise Gate. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, system cost, and simplifying design.
EUA2068 having power limit interlock non-clip function, controls gain automatically and prevents output signals from being clipped at the supply voltage. In addition, this power limit function permits the maximum output to be arbitrarily specified to 100mW to 1000mW according to a speaker to use. The “Noise Gate” function removes the TDMA, DAC or white noise which comes in at no-signal state, by muting an output signal automatically when output level is low. With this function, the very low noise characteristics can be realized.
Furthermore, EUA2068 also integrate overcurrent and overtemperature protection functions, DC output protection function, under-voltage malfunction prevention function, as well as EMI noise and the pop noise reduction functions.
The EUA2068 is available in space-saving WCSP package.

Feature
•Unique Modulation Scheme Reduces EMI Emissions
•Unique Non-Clip function , Variable NCNA, NCNB,NCNOFF mode
•3.3W 4-Ω Load at VDD=5V, THD+N <10%
•Low Quiescent Current, IDD=4mA @5V
•2.5V to 5.5V Wide Supply Voltage
•Overcurrent Protection Function (OCP)
•Overtemperature Protection Function (OTP)
•DC Output Protection Function (DCOP)
•Under-voltage Malfunction Prevention Function (UVL)
•Short Circuit Auto-Recovery
•Power Limit Function
•Noise Gate Function
•1.5mm 1.5mm Wafer Chip Scale Package (WCSP)
•RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free

Application
•Smart Phones/Cellular Phones
•Portable Multimedia Players

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