目录LAc嘉泰姆

1.产品概述                       2.产品特点LAc嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 LAc嘉泰姆
5.产品封装图                     6.电路原理图                   LAc嘉泰姆
7.功能概述                        8.相关产品LAc嘉泰姆

一,产品概述(General Description)         LAc嘉泰姆

   The CXAD4159 is a high-efficiency, filterless Class-D audio power amplifier with automatic level control (ALC). It operates from 2.7V to 5.5V supply.When powered with 5V supply voltage, the CXAD4159 is capable of delivering 3.2W into 4Ω load or 1.8W into 8Ω load with 10% THD+D.The CXAD4159 features ALC on the audio output signals, which detects the output clipping caused by the over-level input signal and utomatically adjusts the voltage gain of the amplifier to eliminate the clipping while maintaining the maximally-allowed dynamic range of the audio output signals. The ALC also eliminates the output clipping due to low battery supply voltage.As a Class-D power amplifier, the ft2045 features high efficiency (up to 88%) and high PSRR (70dB at 217Hz), which make the device ideal for use in battery-powered portable devices. It also features minimized click-and-pop noise during turn-on and turn-off transitions.LAc嘉泰姆
二.产品特点(Features)LAc嘉泰姆
Filterless Class-D operationLAc嘉泰姆
Automatic level control to eliminate output clippingLAc嘉泰姆
High efficiency up to 90%LAc嘉泰姆
Maximum output power at 5V supply (ALC Off)LAc嘉泰姆
             3.2W (4Ω load, 10% THD+N)LAc嘉泰姆
             1.8W (8Ω load, 10% THD+N)LAc嘉泰姆
Constant output power at 5V supply (ALC On)LAc嘉泰姆
            2.4W (4Ω load, THD+N < 0.6%)LAc嘉泰姆
            1.35W (8Ω load, THD+N < 0.5%)LAc嘉泰姆
Constant output power at 3.6V supply (ALC On)LAc嘉泰姆
            1.2W (4Ω load, THD+N < 0.6%)LAc嘉泰姆
             0.7W (8Ω load, THD+N < 0.5%)LAc嘉泰姆
Low THD+N < 0.05% (VDD=3.6V, f=1kHz, RL=8Ω, PO=0.5W)LAc嘉泰姆
Low quiescent current: 2.2mA @ VDD=3.6VLAc嘉泰姆
Low shutdown current < 0.1μALAc嘉泰姆
High PSRR: 75dB @ 217HzLAc嘉泰姆
Short-circuit & thermal overload protectionLAc嘉泰姆
Fast startup time: 4msLAc嘉泰姆
Available in MSOP-8L packageLAc嘉泰姆
三,应用范围 (Applications)LAc嘉泰姆
Cellular handsetsLAc嘉泰姆
Portable navigation devicesLAc嘉泰姆
Multimedia internet devicesLAc嘉泰姆
四.下载产品资料PDF文档LAc嘉泰姆

需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！LAc嘉泰姆

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五,产品封装图 (Package)LAc嘉泰姆

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六.电路原理图LAc嘉泰姆

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七,功能概述LAc嘉泰姆

APPLICATIONS INFORMATIONLAc嘉泰姆

   The CXAD4159 is a high-efficiency, filterless Class-D audio power amplifier with automatic level control (ALC). It operates from 2.7V to 5.5V supply. When powered with 5V supply voltage, the CXAD4159 is capable of delivering 3.2W into 4Ω load or 1.8W into 8Ω load, with 10% THD+N. When operated in ALC mode with 5V supply voltage, the JTCXAD4159s capable of delivering 2.4W into 4Ω load or 1.35W into 8Ω load, with THD+D less than 0.5%. LAc嘉泰姆

   The JTM145CXAD4159res ALC on the audio output signals, which detects the output clipping caused by the over-level input signal and automatically adjusts the voltage gain of the amplifier to eliminate the clipping while maintaining the maximally-allowed dynamic range of the audio output signals. The ALC also eliminates the output clipping due to low battery supply voltage. In addition, the JTM145 featureCXAD4159lterless PWM modulator that eliminates the need for an external LC filter, therefore reducing the number of external components, the PCB board space, and the system cost.In this manner, the power efficiency is also improved. LAc嘉泰姆
As specifically designed for portable applications, the CXAD4159 incorporates CXAD4159 down mode to minimize the power consumption by holding the CTRL pin to ground. It also includes comprehensive protection features against various operating faults such as over-current, short-circuit, over-temperature, or under-voltage for a safe and reliable operation. LAc嘉泰姆

AUTOMATIC LEVEL CONTROL (ALC)      LAc嘉泰姆

   The automatic level control is to maintain the audio output signals for a maximum voltage swing without distortion when an excessive input that may cause output clipping is applied. With the ALC function, theCXAD4159 lowers the voltage gain of the amplifier to an appropriate value such that the clipping at the outputs is eliminated. It also eliminates the clipping of the output signal due to the reduction of the power-supply voltage.LAc嘉泰姆

八,相关产品    更多同类产品.......LAc嘉泰姆

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