CXAR41280has embedded depop circuitry to suppress the power-on or power-off transition noises. It also supports the maximum output power clamping function to protect the speakers from burned-out

   产品概述 返回TOPn4t嘉泰姆

The CXAR41280 is a stereo audio power amplifier with dc volume control in 16-pin SOP thermal pad package. It can deliver 1.9W continuous RMS power into 4Ω load per channel in Bridge-Tied Load (BTL) mode at 5V supply voltage. Its THD is smaller than 1% under the above operation condition. To simplify the audio system design in the notebook application, the CXAR41280 supports the Bridge-Tied Load (BTL) mode for driving the speakers, Single-End (SE) mode for driving the headphone. For the low current consumption applications, the shutdown mode is supported to disable the CXAR41280 when it is idle. The current consumption can be reduced below 1μA. The internal DC volume gain setting is ranged from +20dB to -80dB with 32 steps. It is easily to get the expected DC volume gain by applying the volume pin with a suitable dc voltage. The CXAR41280has embedded depop circuitry to suppress the power-on or power-off transition noises. It also supports the maximum output power clamping function to protect the speakers from burned-out. Thermal protection circuitry is implemented to avoid unintentionally damaging.

   产品特点 返回TOPn4t嘉泰姆

„ 32 Steps DC Volume Control from +20dB ~-80dB n4t嘉泰姆

„ Depop Circuitry Integrated n4t嘉泰姆

„ Output Power at 1% THD+N, VDD=5V n4t嘉泰姆

--1.9W/CH (typical) into a 4Ω Load n4t嘉泰姆

--1.25W/CH (typical) into a 8Ω Load n4t嘉泰姆

„ Output Power at 10% THD+N, VDD=5V n4t嘉泰姆

--2.4W/CH (typical) into a 4Ω Load n4t嘉泰姆

--1.55W/CH (typical) into a 8Ω Load n4t嘉泰姆

„ Bridge-Tied Load (BTL) and Single-Ended (SE) Modes Supported n4t嘉泰姆

„ Maximum Output Power Clamping Circuitry Integrated n4t嘉泰姆

„ Ultra Low Shutdown Current n4t嘉泰姆

„ Thermal Shutdown Protection n4t嘉泰姆

„ SOP-16 Package Availablen4t嘉泰姆

   应用范围 返回TOPn4t嘉泰姆

Notebooks n4t嘉泰姆

„ LCD Monitor or TVn4t嘉泰姆

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