IS31AP2010B-UTLS2-EB: 3W @ 4Ω, 2.7 ~ 5.5V in

The IS31AP2010B evaluation board is a fully assembled and tested PCB that uses the IS31AP2010B Class-D power amplifier to drive a 4Ω speaker (or larger) in audio applications such as cellular handsets, the earpiece and mobile phones.

Designed to operate from a 2.7V to 5.5V DC power supply, the evaluation board accepts a single-ended or differential input signal. The evaluation board provides a BTL output capable of delivering 3W into a 4Ω speaker at 5V.

The IS31AP2010B is a high efficiency, 3W@5.0V mono filter-less Class-D audio power amplifier. A low noise, filter-less PWM architecture eliminates the output filter, reduces external component count, system cost, and simplifying design.

Operating in a single 5.0V supply, IS31AP2010B is capable of driving 4Ω speaker load at a continuous average output of 3W@10% THD+N. The IS31AP2010B has high efficiency with speaker load compared to a typical class- AB amplifier.

In cellular handsets, the earpiece, speaker phone, and melody ringer speaker can each be driven by the IS31AP2010B. The gain of IS31AP2010B is externally configurable which allows independent gain control from multiple sources by summing signals from each function.