CXAR41281 CXAR41281L是一款16针TQFN3X3-16立体声音频功率放大器，带有热垫组件。在5V电源电压下，以桥连负载（BTL）方式将1.45W连续均方根功率驱动至4Ω负载。在上述操作条件下，其THD小于1%。对于低电流消耗应用程序，支持关机模式以在CXAR41281/CXAR41281L空闲时禁用它。电流消耗可以进一步降低到1μA以下。使停机引脚处于低电平将驱动CXAR41281L进入停机状态。使停机管脚处于高位将驱动CXAR41281进入停机
·Depop电路集成
·3V至5.5V操作
·10%THD+N时的输出功率，VCC=5V
--3Ω负载下为2.1W（典型值）
·1%THD+N时的输出功率，VCC=5V
--4Ω负载时为1.45W（典型值）
--8Ω负载时为1.15W（典型值）
·10%THD+N时的输出功率，VCC=5V
--2W（典型）到4Ω负载
--8Ω负载时为1.47W（典型值）
立体声电桥捆绑负载（BTL）
·关闭控制可用
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[ CXAR41281 ]
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产品概述 返回TOP
The CXAR41281/CXAR41281L is a stereo audio power amplifier in 16 pin TQFN3X3-16 with thermal pad package. It can drive 1.45W continuous RMS power into 4Ω load in Bridge-Tied Load (BTL) mode at 5V supply voltage. Its THD is smaller than 1% under the above operation condition. For the low current consumption applications, the SHUTDOWN mode is supported to disable the CXAR41281/CXAR41281L when it is idle. The current consumption can be further reduced to below 1μA. Giving the SHUTDOWN pin low level will drive the CXAR41281L entering the shutdown. Giving the SHUTDOWN pin high level will drive the CXAR41281entering the shutdown
产品特点 返回TOP
„ Depop Circuitry Integrated
„ 3V to 5.5V Operation
„ Output Power at 10% THD+N, VCC=5V
--2.1W (typical) into a 3Ω Load
„ Output Power at 1% THD+N, VCC=5V
--1.45W (typical) into a 4Ω Load
--1.15W (typical) into a 8Ω Load
„ Output Power at 10% THD+N, VCC=5V
--2W (typical) into a 4Ω Load
--1.47W (typical) into a 8Ω Load
„ Stereo Bridge-Tied Load (BTL)
„ Shutdown Control Available
„ TQFN3X3-16 Package Available
应用范围 返回TOP
„ PDAs
„ Portable Devices
„ Notebook
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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Stereo Audio Amplifier |
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Part NO. |
VDD (V) min |
VDD (V) max |
POUT THD=1% (W,Ohm) |
POUT(mW) THD=10% (W,Ohm) |
PSRR (dB) |
Gain setting |
Enable Active |
Note |
Package |
|
4.5 |
5.5 |
2.0, 4 |
2.5, 4 |
68 |
Fixed/ADJ |
High |
BTL, De-pop |
TSSOP-20(FD) |
|
|
-- |
6 |
2.0, 4 |
2.6, 4 |
65 |
ADJ |
Low/High |
BTL, Mute, De-pop, POUT(max) Clamping |
TSSOP-24(FD)/ QFN4X4-24 |
|
|
3 |
5.5 |
1.2, 4 |
2.0, 4 |
68 |
Fixed/ADJ |
Low |
DC volume control, PC-Beep |
TSSOP-28(FD)/ TQFN5X5-28 |
|
|
4.5 |
5.5 |
1.9, 4 |
2.6, 4 |
50 |
Fixed |
High |
BTL, SE, OTP |
SOP-16(FD) |
|
|
3 |
5.5 |
1.5, 4 |
2.1, 3 |
-- |
ADJ |
Low/High |
BTL, De-pop |
TQFN3X3-16 |
|
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