We optimized the architecture for low-power Class D amplifiers, allowing us to eliminate the large inductor and capacitor from each output trace, which saves four components for each channel. However, if the amplifier is some distance from the speaker, you may still need a small amount of inductance in the form of a ferrite bead.

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Even though we have reduced the size of the package, and the amount of current (2.6 mA under these conditions), we have boosted the amount of output power. The output power is so significant, that you will be sure to hear your Boomer -equipped mobile phone ringing in noisy environments such as crowded restaurants.

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Now, they are designed in such a way that Class D amplifiers for portable devices don't require output filters ? although very high power Class D amps (10 W to 20 W and up) still need them.

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