CXAR41311 is a high efficiency I2S input class D stereo audio power amplifier. CXAR41311 optional hardware or software I2C control. In BTL mode, it can provide 2*30W/8Ω power output; in PBTL mode, it can provide 75W/4Ω power output. The CXAR41311 has an over-temperature limiting function. When the internal temperature of the chip reaches the over-temperature limiting point, the CXAR41311 automatically reduces the gain, so that the IC can play continuously without interruption. In addition, the CXAR41311 has a power limiting function, one is an amplitude limiting function, which limits a certain output amplitude at the output end so that it does not damage the horn. The other is AGC anti-clipping distortion function, which can effectively improve the sound-breaking distortion caused by excessive input amplitude or reduced power supply voltage after being turned on. In addition, CXAR41311 built-in shutdown function minimizes the standby current, and also integrates functions such as output over-current protection, on-chip over-temperature protection and power supply under-voltage abnormal protection.
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[ CXAR41311 ]"
Directory
1.Product overview 2.Product Features
3.Scope of application 4.Technical Specification Download(PDF Document)
5.Product packaging 6.Circuit schematic
7.Related Products
Product overview Return to Top
CXAR41311 is a high efficiency I2S input class D stereo audio power amplifier. CXAR41311 optional hardware or software I2C control. In BTL mode, it can provide 2*30W/8Ω power output; in PBTL mode, it can provide 75W/4Ω power output. The CXAR41311 has an over-temperature limiting function. When the internal temperature of the chip reaches the over-temperature limiting point, the CXAR41311 automatically reduces the gain, so that the IC can play continuously without interruption. In addition, the CXAR41311 has a power limiting function, one is an amplitude limiting function, which limits a certain output amplitude at the output end so that it does not damage the horn. The other is AGC anti-clipping distortion function, which can effectively improve the sound-breaking distortion caused by excessive input amplitude or reduced power supply voltage after being turned on. In addition, the CXAR41311 built-in shutdown function minimizes the standby current, and also integrates functions such as output over-current protection, on-chip over-temperature protection and power supply under-voltage abnormal protection.
Product Features Return to Top
· Output power
BTL,2 × 30W,24V/8Ω, continuous
BTL,2 × 25W,16V/4Ω, continuous
BTL,2 × 40W,18V/4Ω, peak
PBTL, 75W,24V/4Ω, continuous
・Wide voltage input range of 4.5 V-26V
・ More than 90% efficiency without heat sink
· Three-dimensional voice I 2S import
32,44.1,48,88.2,96kHz sampling rates
Optional hardware or software control
・ Restriction of merit, AGC
・over-temperature limiting function
Output short circuit, overcurrent shutdown function
Undervoltage abnormal protection function
・Lead-free and halogen-free package, QFN36-P
Scope of applicationReturn to Top
The Bluetooth speaker.
The portable speaker.
2.1 channel speakers.
the loudspeaker.
Pull rod speaker
LCD TV/Monitor
Technical Specification (Product PDF)Return to Top
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Product packaging diagramReturn to Top


Circuit schematicReturn to Top

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| Product Model | Channel | Operating voltage | Output power | Gain | IQ | Efficiency | Encapsulation | Remarks |
| CXAR41299 | Mono | 2.8V to 5.0V | 7.0 W | 30dB | 4.0mA | 85% | TSSOP20L | |
| CXAR41300 | Mono | 2.8V to 5.0V | 8.0 W | 30dB | 8.0mA | 85% | TSSOP28L | |
| CXAR41301 | Dual channel | 2.8V to 5.5V | 2 × 8.0W | 30dB | 7mA | 85% | TSSOP24L | |
| CXAR41302 | Mono | 2.7V to 5.5V | 5.2W | 28dB | 3mA | 85% | SOP16L-PP, QFN16L-PP | |
| CXAR41303 | Mono | 2.7V to 5.5V | 5.2W | 28dB | 3mA | 84% | SOP10L | |
| CXAR41304 | Dual channel | 2.7V to 5.5V | 2*4.5W | 28dB | 7mA | 81% | TSSOP24 | |
| CXAR41305 | Mono | 2.5V to 5.5V | 7.0W | 28dB | 7mA | 81% | SOP8L-PP | |
| CXAR41306 | Mono | 2.5V to 5.5V | 11W | 30dB | 3mA | 85% | SOP8L | |
| CXAR41307 | Mono | 2.5V to 5.5V | 9W | 30dB | 3mA | 85% | SOP16L-PP | Class AB/D Switching Class F Audio Power Amplifier with Built-in BOOST Boost Module |
| CXAR41308 | Dual channel | 2.5V to 5.5V | 2 × 4.75W | 30dB | 3mA | 85% | TSSOP20L | Class AB/D switching 2 × 4.75W stereo class D audio power amplifier with built-in BOOST boost/anti-sound breaking function |
| CXAR41309 | Dual channel | 2.5V to 5.5V | 2 × 5.5W | 30dB | 3mA | 85% | SOP16L | Class AB/D Switching 2 × 5.5W Stereo Audio Power Amplifier with Built-in BOOST Boost |
| CXAR41310 | Mono | 2.5V to 5.5V | 5.2W | 28dB | 3mA | 84% | SOP10L | Built-in high-efficiency adaptive charge pump boost, anti-clipping distortion function, D/AB switching 5.2W mono high-fidelity audio power amplifier |
| Digital Audio Amplifier | ||||||||
| Product Model | Channel | Operating voltage | Output power | Gain | IQ | Efficiency | Encapsulation | Remarks |
| CXAR41311 | Dual channel | 4.5V-26V | 2 × 40W | 30dB | 3mA | 85% | QFN36 | 30W Stereo Class D I2S Input Audio Amplifier Programmable Power Limit, and AGC Function |
| CXAR41312 | Mono | 3.0-3.6V | 4.7W | 30dB | 3mA | 85% | TSSOP20, QFN20 | 2.8W I2S Input Mono Class D Audio Power Amplifier |
| Headset power amplifier | ||||||||
| CXAR41313 | Dual channel | 4.5V-26V | 2 × 30W | 30dB | 3mA | 90% | QFN36 | 33mW Output-Free Capacitive Stereo Headphone Amplifier |
| CXAR41314 | Dual channel | 2.5VTo5.2V | 125mW/32Ω | 30dB | 3mA | 90% | QFN16 | 125mW Stereo Line Driver/Headphone Amplifier with No Output Coupling Capacitor |
| CXAR41315 | Dual channel | 1.65V to 4.8V | 125mW/32Ω | 30dB | 3mA | 90% | QFN16 | 125mW Stereo Line Driver/Headphone Amplifier with No Output Coupling Capacitor |
| CXAR41316 | Dual channel | 2.5VTo5.2V | 125mW/32Ω | 30dB | 3mA | 90% | QFN24L | 125mW Output-Free Coupled Capacitive Stereo Line Driver/Headphone Amplifier with 3D Surround and Bass Boost |



