Smallest Class-D Audio Amplifier Rated at 3.2W

Texas Instruments Inc. (TI) has developed a 3.2W, mono Class-D audio amplifier with an integrated digital-to-analog converter (DAC) noise filter that reduces codec noise by as much as 82 percent, compared to devices without this feature. The TPA2011D1’s integrated noise filter could eliminate the need for an external filter on the inputs, reducing component count and cost. Available in a 1.2x1.2mm package size, TI's latest Class-D amplifier is 25 percent smaller than competing devices, further saving space for designers who are looking for 0.4mm pitch for next-generation mobile phones and portable media players.

The device's integrated image reject filter provides a low-pass cutoff frequency of 130kHz. It also features a quiescent current of 1.5mA, resulting in 50 percent lower power than other amplifiers for higher battery efficiency and improved battery life.

TI's TPA2011D1 Class-D audio amplifier

TI's TPA2011D1 Class-D audio amplifier


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