Contextual Info: S G S -T H O M S O N TDA7273 SINGLE CHIP STEREO CASSETTE PLAYBACK SYSTEM ADVANCE DATA • WIDE OPERATING SUPPLY VOLTAGE 1,8V to 7V ■ INPUT COUPLING WITHOUT CAPACITORS ■ BUILT-IN DC STEREO VOLUME CONTROL ■ BUILT-IN RIPPLE FILTERS . LOW QUIESCENT CURRENT