A cross-differential amplifier is provided. The cross-differential
amplifier includes an inductor connected to a direct current power source
at a first terminal. A first and second switch, such as transistors, are
connected to the inductor at a second terminal. A first and second
amplifier are connected at their supply terminals to the first and second
switch. The first and second switches are operated to commutate the
inductor between the amplifiers so as to provide an amplified signal
while limiting the ripple voltage on the inductor and thus limiting the
maximum voltage imposed across the amplifiers and switches.