EUA6211 ds6211 ver0.1 feb. 2013 1 advanced stereo headphone amplifier description EUA6211 is a dual audio power amplifier designed fo r portable communication device applications such as mobile phones. EUA6211 operates from a single 2.5v to 5.5v supply, consumes only 3.8ma of supply current, capable of delivering 30mw of continuous average po wer into a 16 load from a 3v power supply with a thd+n of 1%. base on the power supply delivered to the device, a n internal power management block generates a negativ e voltage. thus, the internal amplifiers provide outp uts referenced to ground. in this configuration, the tw o external heavy coupling capacitors can be removed. it offers significant space and cost savings compared to a typical stereo application. EUA6211 has an internal gain of C 1.5v/v with low 0 .03% thd+n performance. an 80db at 1khz power-supply rejection ratio (psrr) allows these devices to oper ate from noisy digital supplies without an additional linear regulator. comprehensive click-and-pop circuitry suppresses au dible clicks and pops on startup and shutdown. other features include short-circuit and thermal-ov erload protection, and are specified over the extended -40 c to +85c temperature range. the device is available in tiny 12- bump wcsp (1.5mm 2mm) and tdfn-12 packages. typical application circuit features no bulky dc-blocking capacitors required 2.5v to 5.5v operation fixed -1.5v/v gain low 0.03% thd+n high psrr (80db at 1khz) integrated click-and-pop suppression low quiescent current (3.8ma) low-power shutdown mode, < 0.1 a available in space-saving 12-bump wcsp (1.5mm 2mm) and tdfn-12 packages rohs compliant and 100% lead(pb)-free halogen-free applications cellular phones mp3 players notebook pcs handheld gaming consoles figure1.
|
