喇叭保护功能的6W立体声D类音频放大器6-W Stereo Class-D Audio Power Amplifier with Speaker Protection CXAR41174B 为一款高效率，2通道全桥式驱动（BTL）D类音频放大器8Ω的负载提供持续的6W每通道的输出功率

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      CXAR41174B 为一款高效率，2通道全桥式驱动（BTL）D类音频放大器。CXAR41174B能够给8Ω的负载提供持续的6W每通道的输出功率，并且THD+N为10%。CXAR41174B其内部采用全差动输入设计，比起单端输入更能有效抑制噪声。利用G0和G1连个引脚，可以选择放大器增益为20，26，32或是36dB。改进的EMI抑制技术使得在输出端可以使用廉价的铁氧体磁珠，同时满足电磁兼容性（EMC）要求。CXAR41174B内置扬声器保护电路，以限制流过扬声器的电流值。同时AGC可以检测出由于输入信号过大而引起的输出信号clip并自动抑制clip。CXAR41174B提供短路保护和过热保护，以避免芯片的损毁。CXAR41174B采用28-pin TSSOP封装。The CXAR41174B is a high efficiency, 2 channel bridged-tied load (BTL), class-D audio power amplifier. Operating from a 10V power supply, CXAR41174B is capable of delivering 6W/ channel of continuous output power to a 8Ω load with 10% THD+N. The CXAR41174B features a differential input architecture offering improved noise immunity over a single-ended (SE) input amplifier. Amplifier gain is internally configured and can be selected to 20, 26, 32 or 36dB utilizing the G0 and G1 gain select pins. Advanced EMI suppression technology enables the use of inexpensive ferrite bead at the outputs while meeting EMC requirements. The speaker protection circuitry is integrated into CXAR41174B to limit the amount of current through the speaker. Meanwhile, the AGC detects output signal clip due to the over level input signal and suppresses it automatically. The CXAR41174 also features short-circuit and thermal protection preventing the device from being damaged during a fault condition. The CXAR41174 is available in thermally efficient 28-pin TSSOP package.

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‧工作电压：5.5V到26VCC8嘉泰姆

‧独特的调制方式减少EMI干扰CC8嘉泰姆

‧负载8Ω，工作电压10V，单一通道输出功率可达6WCC8嘉泰姆

‧负载4Ω，工作电压10V，单一通道输出功率可达12WCC8嘉泰姆

‧效率高达87%D类操作模式可以降低热消耗</p>

‧四种可选增益</p>

‧全差分输入</p>

‧扬声器保护电路</p>

‧自动增益控制（AGC）和功率限制CC8嘉泰姆

‧具有过温及短路保护机制</p>

‧28-pin TSSOP封装CC8嘉泰姆

‧符合RoHS规范及Pb-FreeCC8嘉泰姆

Wide Supply Voltage: 5.5V to 26VCC8嘉泰姆

Unique Modulation Scheme Reduces EMI EmissionCC8嘉泰姆

6-W/ch into an 8-
Load From a 10-V SupplyCC8嘉泰姆

12W into a 4-
Mono Load From a 10-V SupplyCC8嘉泰姆

87% Efficient Class-D Operation EliminatesCC8嘉泰姆

Need for Heat SinksCC8嘉泰姆

Four Selectable, Gain SettingsCC8嘉泰姆

Differential InputsCC8嘉泰姆

Speaker Protection CircuitryCC8嘉泰姆

Auto Gain Control and Power ClampCC8嘉泰姆

Thermal and Short-Circuit ProtectionCC8嘉泰姆

28-pin TSSOP Package with Thermal PadCC8嘉泰姆

RoHS compliant and 100% lead(Pb)-freeCC8嘉泰姆

Halogen-FreeCC8嘉泰姆

   应用范围 返回TOPCC8嘉泰姆

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‧电视
TelevisionsCC8嘉泰姆

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