AW8145CSR中文资料无破音、超低 EMI、3W、单声道、无需滤波器、D类音频功率放大器数据手册Awinic规格书

描述 Description

The AW8145 is a non-crack-noise (NCN),ultra-low-EMI, filter-free, 3W, mono, Class-Daudio amplifier. Unique NCN function, whichadjusts the system gain automatically whiledetecting the “Crack” distortion of output sig-nal, protects the speaker from damage at highpower levels and brings the most comfortablelistening experience to the customers.The AW8145 features the EEE (EnhancedEmission Elimination) function which greatlyreduces EMI over the full bandwidth. TheAW8145 achieves better than 20dB marginunder FCC limits with 24 inch of cable.The filter-free PWM architecture and internalgain setting reduces external componentscount, board area consumption, system costand simplifies the design. In addition, TheAW8145 offers efficiencies above 90%. Theover-current, over-temperature and under-voltage protection is prepared inside of thedevice.

特性 Features

• NCN Function Protects the Speaker, Three Mode Selectable:NCN1,NCN2,NCNOFF
• EEE Function, Greatlreduces EMI over the full bandwidth
• Excellent Pop-Click Supression
• 3W into 4Ω (10% THD+N,VDD=5V)
• 0.05%THD+N（ Pout=1W,VDD=5V）
• Filter-Free Class-D Architecture
• Gain of 8V/V(18dB)
• Up to 90% Efficiency
• High PSRR (-80dB at 217Hz)
• Low Quiescent Current (3.5mA)
• Low Shutdown Current (<0.1μA)
• Power SupplRange: 2.5V~5.5V
• Over-Current Protection
• Over-Temperature Protection
• Undervoltage Protection
• Small 1.45mm×1.45mm CSP9 Package