1/6 32w hi-fi audio power amplifier TDA2050 description outline drawing the tda 2050 is a monolithic integrated circuit in pentawatt package, intended for use as an audio class ab audio amplifier. thanks to its high power capability the TDA2050 is able to provide up to35w true rms power into 4 ohm load @ thd =10%, v s = 18v, f = 1khz and up to 32w into 8ohm load @thd = 10%, v s = 22v, f = 1khz. moreover, theTDA2050 delivers typically 50w music power into 4 ohm load over 1 sec at v s =22.5v, f = 1khz. the high power and very low harmonic and crossover distortion (thd = 0.05% typ, @ v s = 22v, p o = 0.1 to 15w, r l =8ohm, f = 100hz to 15khz) make the device most suitable for both hifi and high class tv sets. feature high output power(50w musi c power iec 268.3 rules) high operating supply voltage (50v) single or split supply operations very low distortion short circuit protection (out to gnd) thermal shutdown pin connection tiger electronic co.,ltd
TDA2050 2/6 block diagram absolute maximum ratings (ta=25 c) characteristic symbol value unit supply voltage vs 25 v input voltage vi vs v differential input voltage vi 15 v output peak current(internally limited) io 5 a power dissipationtcase=75 c ptot 25 w storage and junction temperature range tstg,tj -40~+150 c electrical characteristics (unless otherwise specified: vs=18v ? f=1khz ? ta=25 c) characteristics symbol test conditions min typ max unit supply voltage range vs 4.5 25 v quiescent drain current i d vs=4.5v vs=25v 30 55 50 90 ma input bias current i b vs=22v 0.1 0.5 a input offset voltage vos vs=22v 15 mv input offset current ios vs=22v 200 na d=0.5% r l =4 ? r l =8 ? vs=22v r l =8 ? 24 22 28 18 25 d=10% r l =4 ? r l =8 ? vs=22v r l =8 ? 35 22 32 rms output power po d=10%,t=1s vs=22.5v r l =4 ? 50 w
TDA2050 3/6 continue: characteristics symbol test conditions min typ max unit r l =4 ? f=1khz,po=0.1 to 24w f=100hz to 10khz,po=0.1 to 18w 0.03 0.5 0.5 % total harmonic distortion d vs=22v r l =8 ? f=1khz,po=0.1 to 20w f=100hz to 10khz,po=0.1 to 15w 0.02 0.5 % slew rate sr 5 8 v/s open loop voltage gain gv 80 db closed loop voltage gain gv 30 30.5 31 db power bandwidth(-3db) bw r l =4 ? vi=200mv 20 to 80000 hz total input noise e n curve a b=22hz to 22khz 4 5 10 v input resistance(pin 1) ri 500 k ? supply voltage rejection svr rs=22k ? ;f=100hz vripple=0.5vrms 45 db po=28w;r l =4 ? 65 % efficiency po=25w; r l =8 ? vs=22v 67 % thermal shut-down junction temperature t sd-j 150 c
TDA2050 4/6 application circuit split supply typical application circuit single supply typical application circuit
TDA2050 5/6 characteristic curves
TDA2050 6/6
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