Adjustable offset voltage circuit

An adjustable offset voltage circuit for adjusting voltage levels of each of a positive output signal and a negative output signal relative to each other, said circuit comprising:

• a first emitter follower unit for providing a first offset voltage, said first emitter follower unit including a single bi-polar transistor;
• a second emitter follower unit for providing a second offset voltage, said second emitter follower unit including a single bi-polar transistor;
• a first current generating unit for providing a biasing current to said first emitter follower unit, said first current generating unit including a single bi-polar transistor;
• a second current generating unit for providing a biasing current to said second emitter follower unit, said second current generating unit including a single bi-polar transistor;
• a pair of differential signal input ports, each of which is coupled to a base of said bi-polar transistor of one of said first and second emitter follower units;
• and
• an offset adjustment unit for permitting linear offset adjustment of the positive output signal and the negative output signal relative to each other, said offset adjustment unit further including a differential pair of bi-polar transistors.

An adjustable offset voltage circuit for adjusting voltage levels of each of a positive output signal and a negative output signal relative to each other, said circuit comprising:

• a first emitter follower unit for providing a first offset voltage, said first emitter follower unit including a single bi-polar transistor and a single resistor;
• a second emitter follower unit for providing a second offset voltage, said second emitter follower unit including a single bi-polar transistor and a single resistor;
• a first current generating unit for providing a biasing current to said first emitter follower unit, said first current generating unit including a single bi-polar transistor and a single resistor;
• a second current generating unit for providing a biasing current to said second emitter follower unit, said second current generating unit including a single bi-polar transistor and a single resistor;
• a pair of differential signal input ports, each of which is coupled to a base of said bi-polar transistor of one of said first and second emitter follower units;
• and
• an offset adjustment unit for permitting linear offset adjustment of the positive output signal and the negative output signal relative to each other, said offset adjustment unit further including a differential pair of bi-polar transistors.