EUA2075B ds2075b ver 1.0 june 2014 1 2.5w/ch stereo filterless class-d audio amplifier with 64-step dc volume control description the EUA2075B is a high efficiency, 2 channel bridge d-tied load (btl), class-d audio power amplifier. operatin g from a 5v power supply, EUA2075B is capable of deliverin g 2.5w/channel of continuous output power to a 4 load with 10% thd+n. the EUA2075B features an advanced 64-step dc volume control which offers a range of s peaker gain from -70db to 20db. the agc detects output sig nal clip due to the over level input signal and suppres ses it automatically. moreover the agc can adapt the outpu t clip caused by power supply voltage down with battery. t he new filter-less architecture allows the device to d rive the speaker directly, without low-pass output filters, which will save system cost and pcb area. the EUA2075B also features short-circuit and therma l protection preventing the device from being damaged during a fault condition. the EUA2075B is available in 16-pin sop package. typical application circuit features wide supply voltage: 2.7v to 5.5v unique modulation scheme reduces emi emission 2.5w/ch into an 4 load from 5v supply 64-step dc volume control internal agc function thermal and short-circuit protection integrated click and pop suppression available in sop-16 package rohs compliant and 100% lead(pb)-free halogen-free applications lcd monitors/tvs all-in-one pcs portable audio notebook pc figure1.
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