The APA2066KAI is a filter-free Class-D audio amplifier manufactured by Anpec Electronics. It is designed for portable audio devices and other low-power applications where high efficiency and small size are critical.

Applications

• Portable media players
• Mobile phones
• Laptop computers
• Tablets
• Bluetooth speakers

Features

• Filter-free Class-D architecture
• Low THD+N (Total Harmonic Distortion + Noise)
• High efficiency
• Integrated gain setting resistors
• Short-circuit and thermal protection
• Available in a small package

Benefits

• Eliminates the need for external filters, reducing component count and cost
• Provides high-quality audio reproduction
• Extends battery life in portable devices
• Simplifies circuit design
• Protects the device from damage
• Enables compact designs

Technical Specifications

The APA2066KAI delivers 3W into a 4Ω load with a 5V supply. It features a THD+N of 0.1% at 1W. The efficiency is typically 85%. It operates from a 2.5V to 5.5V supply. The device is available in a SOP-8 package. Integrated gain setting resistors provide flexibility in amplifier gain configuration. It includes short-circuit and thermal protection to prevent damage to the device and the audio system.

The filter-free Class-D architecture significantly reduces the number of external components required, saving board space and cost. The high efficiency of the amplifier minimizes power consumption, resulting in longer battery life in portable devices. The integrated protection features ensure reliable operation in a variety of environments. It is an excellent choice for portable audio applications where space and power are critical constraints.