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.
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[ CXAR41280 ]"
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产品概述 返回TOP
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TOP
„ 32 Steps DC Volume Control from +20dB ~-80dB
„ Depop Circuitry Integrated
„ Output Power at 1% THD+N, VDD=5V
--1.9W/CH (typical) into a 4Ω Load
--1.25W/CH (typical) into a 8Ω Load
„ Output Power at 10% THD+N, VDD=5V
--2.4W/CH (typical) into a 4Ω Load
--1.55W/CH (typical) into a 8Ω Load
„ Bridge-Tied Load (BTL) and Single-Ended (SE) Modes Supported
„ Maximum Output Power Clamping Circuitry Integrated
„ Ultra Low Shutdown Current
„ Thermal Shutdown Protection
„ SOP-16 Package Available
应用范围 返回TOP
Notebooks
„ LCD Monitor or TV
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产品封装图 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 |
|
