CXAR41202是一个双桥连接的音频功率放大器，当连接到5V电源时，它将向4Ω负载输出2.1W，或向3Ω负载输出2.5W，通常为1%THD+N。
CXAR41202有两个独立的HP（耳机）启用输入，每个都有不同的逻辑电平阈值。HP启用输入可激活单端耳机模式并禁用BTL输出模式。HP Sense输入用于普通立体声耳机插孔。剩下的输入HP Logic接受标准逻辑级阈值。为了简化音频系统设计，CXAR41202将双桥扬声器放大器和立体声耳机放大器结合在一个芯片上。CXAR41202具有低功耗关机模式和热关机保护。它还利用电路来减少设备打开时的“弹出/点击”。
CXAR41202有绿色TQFN-4×4-24L包装。它在-40℃到+85℃的环境温度范围内工作。
•1%THD+N时的采购订单，VCC=5V
RL=3Ω2.5W（典型值）
RL=4Ω2.1W（典型值）
RL=8Ω1.3W（典型值）
•低关机电流0.02μA
•工作电源电压2.8V至5.5V
•217Hz 80dB时的PSRR（典型值）
•3D增强
•可选耳机启用模式
•立体声耳机放大器模式
•改进的“弹出/点击”抑制电路
•热关机保护电路
•-40℃至+85℃工作温度范围
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[ CXAR41202 ]"
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产品概述 返回TOP
The CXAR41202 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W into a 4Ω load or 2.5W into a 3Ω load with typically 1% THD+N.
The CXAR41202 has two separate HP (headphone) enable inputs, each having different logic level thresholds. Either HP enable input activates the single-ended headphone mode and disables the BTL output mode. The HP Sense input is for use with a normal stereo headphone jack. The remaining input, HP Logic, accepts standard logic level thresholds.
To simplify audio system design, the CXAR41202 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.
The CXAR41202 features a low power consumption shutdown mode and thermal shutdown protection. It also utilizes circuitry to reduce “pop/click”during device turn-on.
The CXAR41202 is available in Green TQFN-4×4-24L package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• PO at 1% THD+N, VCC = 5V
RL = 3Ω 2.5W (TYP)
RL = 4Ω 2.1W (TYP)
RL = 8Ω 1.3W (TYP)
• Low Shutdown Current 0.02μA
• Operation Supply Voltage 2.8V to 5.5V
• PSRR at 217Hz 80dB (TYP)
• 3D Enhancement
• Selectable Headphone Enable Modes
• Stereo Headphone Amplifier Mode
• Improved “Pop/Click” Suppression Circuitry
• Thermal Shutdown Protection Circuitry
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TQFN-4×4-24L Package
应用范围 返回TOP
Cell Phones, PDAs, MP4s, PMPs
Portable and Desktop Computers
Desktops Audio System
Multimedia Monitors
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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音频功率放大器 |
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Part Number |
CH |
SHDN |
VCC (Min)(V) |
VCC (Max)(V) |
Differential Input |
Output Voltage @VCC=3.6V(W) |
Output Voltage @VCC=5V(W) |
Package |
|
Stereo |
H |
2.8 |
5.5 |
N |
0.7 |
1.3 |
DIP-16 TSSOP-20(EP) TSSOP -16(EP) SOIC-16TQFN-3x3-20L |
|
|
Stereo |
L |
2.6 |
5.5 |
N |
0.7 |
1.3 |
TQFN-4x4-16L |
|
|
Mono |
H |
2.5 |
5.5 |
N |
1.2 |
SOIC-8 SOIC-8(EP) |
||
|
Stereo |
L |
2.8 |
5.5 |
N |
0.7 |
1.3 |
TQFN-4x4-24L |
|
|
Mono |
L |
2.5 |
5.5 |
N |
0.6 |
1.2 |
TDFN-2x2-8L |
|
|
Mono |
L |
2.5 |
5.5 |
Y |
0.65 |
1.3 |
TDFN-3x3-8L MSOP-8(EP) |
|
|
Mono |
L |
2.5 |
5.5 |
Y |
0.65 |
1.3 |
TDFN-2x2-8L |
|
|
Mono |
L |
2.5 |
5.5 |
Y |
0.65 |
1.3 |
MSOP-8 MSOP-10 TDFN-3x3-10L |
|
