APA3176

Stereo Digital Class-D Amplifier

Features

• Operating Voltage: 8V-20V for PVDD and AVDD

- 3.0V~3.6V for DVDD

• High Efficiency Class-D Operation Eliminate the Need of Heatsinks
• Digital Serial Audio Input (Stereo Output)
• I²C Control Interface
• Sampling Rate can Support from 32kHz to 192kHz
• Separated Volume Control from 24dB to Mute
• Soft Mute (50% Duty Cycle)
• Programmable Dynamic Range Compression

- Power Limiter
- Speaker Protection

• Shutdown and Mute Function
• Soft Start and Soft Mute
• Slew Rate limiter
• Thermal and Over-Current Protections with Auto Recovery
• Space Saving Package QFN4x4-28A and TSSOP-28P
• Lead Free and Green Devices Available (RoHS Compliant)

General Description
The APA3176 is a digital input, stereo, high efficiency, Class-D audio amplifier and is available in QFN4x4-28A and TSSOP-28P pins packages. The APA3176 accepts the digital serial audio data and using the digital audio processor to convert the audio data becomes the stereo Class-D output speaker amplifier. This provides the seamless integration between the codec and the speaker amplifier. The APA3176 is a slave device receiving clocks from external source, and the Class-D’s PWM switching frequency is 352.8kHz for the sampling rate 44.1kHz or 384kHz for sampling 48kHz, depend on the input signal’s sampling rate.