DIOPAM8406ER
Overview
The PAM8406ER is a versatile 5W stereo audio amplifier that provides engineers the unique ability to switch between Class D and Class AB output modes. This flexibility allows for high efficiency (up to 90 percent) in Class D mode for battery-powered longevity or low EMI interference in Class AB mode. Operating from a 2.5V to 5.5V supply, it is specifically designed for space-constrained applications requiring minimal external components.
Why Choose This Part
The dual-mode architecture allows designers to mitigate EMI issues during the prototyping phase by switching to Class AB without changing the PCB layout. The integrated 'filterless' Class D technology reduces the Bill of Materials by eliminating the need for bulky LC output filters. Additionally, the exposed pad (EP) package enhances thermal dissipation, enabling the chip to deliver up to 5W per channel into 2-Ohm loads.
Applications
Key Specifications
Getting Started
When designing the PCB, place a 10uF tantalum and a 0.1uF ceramic capacitor as close as possible to the VDD pin to minimize noise. The MODE pin (Pin 9) should be tied to VDD for Class AB operation or GND for Class D operation. Ensure the exposed thermal pad is soldered to a large copper ground plane to achieve the maximum rated power output without triggering thermal shutdown.
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