Operating in a single 5V supply, CXAR41168 is capable of driving 4Ω speaker load at a continuous average output of 2.8W/10% THD+N or 2.2W/1% THD+N. The CXAR41168 has high efficiency with speaker load compared to a typical class AB amplifier. With a 3.6V supply driving an 8Ω speaker , the efficiency for a 400mW power level is 84%
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[ CXAR41168 ]"
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7.相关产品
产品概述 返回TOP
，CXAR41168可持续输出2.8W并具有10%的THD+N及2.2W并具有1%的THD+N。与传统的AB类放大器相比，CXAR41168具有更高的效率。在工作电压为3.6V时，驱动8Ω扬声器输出400mW效率可达84%。CXAR41168可用于移动电话，耳机，对讲电话和门铃。CXAR41168具有外部可调整的增益，可调节各输入信号的增益，并将各输入信号进行叠加放大。The CXAR41168 is a high efficiency, 2.8W mono class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, system cost, and simplifying design. Operating in a single 5V supply, CXAR41168 is capable of driving 4Ω speaker load at a continuous average output of 2.8W/10% THD+N or 2.2W/1% THD+N. The CXAR41168 has high efficiency with speaker load compared to a typical class AB amplifier. With a 3.6V supply driving an 8Ω speaker , the efficiency for a 400mW power level is 84%. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the CXAR41168. The gain of CXAR41168is externally configurable which allows independent gain control from multiple sources by summing signals from separate sources.
产品特点 返回TOP
●独特的调制方式减少EMI干扰
●短路自动恢复
●工作电压3.6V，负载8Ω，输出功率400mW效率可达84%
●低静态电流和关断电流
●工作电压2.5V-5.5V
●Shutdown 引脚兼容1.8V 逻辑GPIO
●PWM输出级无需滤波器
●-68dB PSRR 无需电源稳压器
●全差分设计无需RF整形器和旁路电容
●改进的CMRR无需使用输入端耦合电容
●内部固定250K开关频率
●内部集成抑制pop和click噪声电路
●8-pin SOP封装
●符合RoHS规范及Pb-Free
Unique Modulation Scheme Reduces EMI Emissions
Short Circuit Auto-Recovery
Efficiency at 3.6V With an 8- Speaker:
− 84% at 400 mW
Low Quiescent Current and
Shutdown Current
2.5V to 5.5V Wide Supply Voltage
Shutdown Pin Compatible with 1.8V Logic GPIO
Optimized PWM Output Stage Eliminates
LC Output Filter
Improved PSRR (−68 dB) Eliminates Need for a
Voltage Regulator
Fully Differential Design Reduces RF Rectification
and Eliminates Bypass Capacitor
Improved CMRR Eliminates Two Input
Coupling Capacitors
Internally Generated 250-kHz Switching
Frequency
Integrated Pop and Click Suppression Circuitry
Available in SOP-8 Package
RoHS compliant and 100% Lead(Pb)-Free
Halogen-Free
应用范围 返回TOP
●无线移动电话和PDA
Ideal for Wireless or cellular Handsets and PDAs
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
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电路原理图 返回TOP
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音频放大器 > D类 > D类放大器 |
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Part Number |
remark |
Vin (V) |
Speaker (W) |
Speaker (Ω) |
Headphone |
No of Speaker Channel |
THD +N @ 1KHz (%) |
IQ (mA)(Typ) |
PSRR (dB) |
Package |
|
10-W Inductor Free Stereo Audio Amplifier with Low EMI |
4.5~14.5 |
10 |
8 |
- |
2 |
0.07 |
22 |
60 |
TSSOP-28 |
|
|
2W High Efficiency Mono Class-D Audio Power Amplifier with Non-Clip |
3~5 |
2 |
8 |
N/A |
1 |
0.09 |
9 |
70 |
WCSP-16 |
|
|
2.8W/CH Stereo Filterless Class-D Audio Amplifier with |
2.7~5.5 |
2.8 |
4 |
110mW/32Ω |
2 |
0.2 |
6.5 |
60 |
SOP-24,TQFN-20 |
|
|
2.5W/CH Stereo Filterless Class-D Audio Amplifier with 64-Step DC Volume Control |
2.7~5.5 |
2.5 |
4 |
N/A |
2 |
0.2 |
6.5 |
60 |
SOP-16 |
|
|
3.3W Mono Class-D Audio Power Amplifier with Non-Clip, Power Limit and Noise Gate |
2.5~5.5 |
3.3 |
4 |
N/A |
1 |
0.15 |
4 |
70 |
WCSP-9 |
|
|
2.5-W/CH Stereo Filter-less Class-D Audio Power Amplifier with Auto-Recovery |
2.5 ~ 5.5 |
2.5 |
4 |
N/A |
2 |
0.13 |
6.2 |
63 |
TQFN-20,TSSOP-20 |
|
|
Low EMI, 2.8-W Mono Filterless Class-D Audio Power Amplifier with Auto-Recovery |
2.5~5.5 |
2.8 |
4 |
N/A |
1 |
0.1 |
41 |
68 |
SOP-8 |
|
|
Non-Clip, Low EMI, 2.8W Mono Filterless Class-D Audio Power Amplifier with Auto-Recovery |
2.5 ~ 5.5 |
2.8 |
4 |
N/A |
1 |
0.15 |
3.5 |
70 |
WCSP-9,TDFN-8 |
|
|
2.5W Stereo Class-D Audio Power Amplifier with 3D Enhancement |
2.5 ~ 5.5 |
2.5 |
4 |
N/A |
2 |
0.2 |
7.3 |
70 |
TQFN-24 |
|
|
3-W Mono Filterless Class-D Audio Power Amplifier |
2.5 ~ 5.5 |
3 |
4 |
N/A |
1 |
0.18 |
4.3 |
72 |
TDFN-8, WCSP |
|
|
6.5-W Mono Class-D Audio Power Amplifier |
8 ~ 24 |
6.5 |
8 |
N/A |
1 |
0.08 |
8 |
70 |
TSSOP-24 |
|
|
15-W Stereo Class-D Audio Power Amplifier with Speaker Protection |
5.5~26 |
15 |
8 |
- |
2 |
0.2 |
45 |
60 |
TSSOP-28 |
|
|
6-W Stereo Class-D Audio Power Amplifier with Speaker Protection |
5.5~26 |
6 |
8 |
N/A |
2 |
0.2 |
45mA |
60 |
TSSOP-28 |
|
