Patent ID: 6605930
Filing Date: 2003-08-12
Classification: H02M,Y02B

Abstract:
A switching amplifier for receiving an input signal and for generating a differential output signal representative of the input signal comprising:a first pair of transistor switches for alternately raising and lowering a voltage potential of a first terminal of a first reactive element upon switching of the first pair of transistor switches; a second pair of transistor switches for alternately raising and lowering a voltage potential of the first terminal of the first reactive element upon switching of the second pair of transistor switches; a third pair of transistor switches for alternately raising and lowering a voltage potential of a first terminal of a second reactive element upon switching of the third pair of transistor switches; a fourth pair of transistor switches for alternately raising and lowering a voltage potential of the first terminal of the second reactive element upon switching of the fourth pair of transistor switches; a switch controller for controlling switching of the first, second, third and fourth pairs of transistor switches in accordance with the input signal for forming the differential output signal across a second terminal of the first reactive element and a second terminal of the second reactive element; and a low signal level detector coupled to the second and fourth pair of transistor switches for disabling the second and fourth pair of transistor switches from switching upon detection of a low input signal level condition.