CXAR41247 CXAR41248是一款具有可调功率限制功能的高效立体声D类音频放大器。扬声器驱动器在4.5V～26V电源电压下工作，模拟电路在5V电源电压下工作。在24伏电源电压下，可在1%THD+N范围内将20W/CH输出功率送入8Ω扬声器，播放音乐时无需外部散热片。CXAR41247 CXAR41248提供并行BTL（单声道）应用，在24伏电源电压下可将40W输出功率送入4Ω扬声器。可调功率限制功能允许用户设置低于5V一半的电压轨，以限制通过扬声器的电流量。输出直流检测可防止扬声器因长期电流应力而损坏。CXAR41247 CXAR41248为无过滤器应用程序提供了优异的EMC性能。输出短路和过温保护具有自动恢复功能。
内置LDO扬声器驱动器的单电源电压为4.5V~26V，其他为5V输出
来自24伏供电BTL模式的扬声器电源：20W/CH进入8Ω@<1%THD+N PBTL模式：40W/CH进入4Ω@<10%THD+N
来自12V供电BTL模式的扬声器电源：10W/CH进入8Ω@10%THD+N
88%的D级高效运行，无需散热器差分输入
四个可选择的固定增益设置
内部振荡器
带自动恢复选项的短路保护
欠压检测
过电压保护
弹出“noise”并单击“noise reduction”
扬声器保护的可调功率限制功能
扬声器保护输出直流检测
无过滤器操作
带自动恢复的超温保护
卓越的EMC性能
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[ CXAR41247 ]"
目录
7.相关产品
产品概述 返回TOP
The CXAR41247 CXAR41248 is a high efficiency stereo class-D audio amplifier with adjustable power limit function. The loudspeaker driver operates from 4.5V~26V supply voltage and analog circuit operates at 5V supply voltage. It can deliver 20W/CH output power into 8Ω loudspeaker within 1% THD+N at 24V supply voltage and without external heat sink when playing music.CXAR41247 CXAR41248 provides parallel BTL (Mono)application, and it can deliver 40W into 4Ω loudspeaker at 24V supply voltage. The adjustable power limit function allows user to set a voltage rail lower than half of 5V to limit the amount of current through the speaker. Output DC detection prevents speaker damage from long-time current stress. CXAR41247 CXAR41248 provides superior EMC performance for filter-free application. The output short circuit and over temperature protection include auto-recovery feature.
产品特点 返回TOP
Single supply voltage 4.5V ~ 26V for loudspeaker driver Built-in LDO output 5V for others
Loudspeaker power from 24V supply BTL Mode: 20W/CH into 8Ω @<1% THD+N PBTL Mode: 40W/CH into 4Ω @<10% THD+N
Loudspeaker power from 12V supply BTL Mode: 10W/CH into 8Ω @10% THD+N
88% efficient Class-D operation eliminates need for heat sink Differential inputs
Four selectable, fixed gain settings
Internal oscillator
Short-Circuit protection with auto recovery option
Under-Voltage detection
Over-Voltage protection
Pop noise and click noise reduction
Adjustable power limit function for speaker protection
Output DC detection for speaker protection
Filter-Free operation
Over temperature protection with auto recovery
Superior EMC performance
应用范围 返回TOP
TV audio
Boom-Box
Powered speaker
Monitors
Consumer Audio Equipment
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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音频功放（模拟输入） > D类 |
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产品型号 |
通道 |
工作电压 |
封装 |
备注 |
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单通道 |
2.0V—5.5V |
ESOP-8 |
5W 单通道 D 类，宽工作电压、带过热保护功能音频功放 |
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单通道 |
2.5V-5.5V |
ESOP-8 |
6W 单通道 D 类，宽工作电压、带过热保护功能音频功放 |
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双通道 |
2.5V~8.5V |
ETSSOP24 |
2*10W立体声D类宽工作电压带防破音过热过压保护功能音频功放 |
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单通道 |
3V~5.5V |
MSOP8 SOP8 |
3W单通道Class D全差分输入单声道音频功放超低EMI高信噪比音频功放 |
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单通道 |
2.8V~5.5V单 电源电压供电 |
SOP8 |
5W全差分输入防破单通道Class D类音频功放全差分输入超低EMI高信噪比 |
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单通道 |
2.8V~5.5V单 电源电压供电 |
SOP8 |
5W防破音单声道Class D类音频功放超 EMI，高信噪比，防破音， |
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双通道 |
2.5V-5V |
sop-16 |
3W双通道D类、超低噪音、短路&过热保护 |
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双通道 支持PBTL |
4.5-26V |
ETSSOP-28 |
2x20W(8Ω)/40W(4Ω)，D类立体声，带定功率调制与DTC |
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双通道 支持PBTL |
8-26V |
ETSSOP-28 |
VDD=24V，8Ω，THD+N=0.03%，Po=2x20W / 4Ω，THD+N=0.1%，Po=40W |
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