Texas Instruments TPA2011D1

the tpa2011d1 is a 3.2-w high efficiency filter-free class-d audio power amplifier (class-d amp) in a 1 21?mm 1 16?mm wafer chip scale package (wcsp) that requires only three external components. features like 95% efficiency 86-db psrr 1.5 ma quiescent current and improved rf immunity make the tpa2011d1 class-d amp ideal for cellular handsets. a fast start-up time of 4 ms with no audible turn-on pop makes the tpa2011d1 ideal for pda and smart-phone applications. the tpa2011d1 allows independent gain while summing signals from separate sources and has a low 20 v noise floor.