CIRUIT FOR DINGLE - TO DIFFERENTIAL LNA

PURPOSE: A single to differential LNA circuit is provided to stabilize an input DC bias using a current source instead of an inductor. CONSTITUTION: A DC bias unit(1) generates a DC bias signal. An LNA input signal is inputted to a common source of first and eleventh n-MOSs(M1,M11). The LNA input signal is inputted to a common gate of second and twelfth n-MOSs(M2,M12). A first current mirror(11) comprises a third p-MOS transistor(M3) and a thirteen p-MOS transistor(M13). A second current mirror(12) comprises a fourth p-MOS transistor(M4) and a fourteenth p-MOS transistor(M14). A DC bias unit is connected between the DC bias unit and an LNA input signal terminal. A first output terminal outputs a first difference output signal. A second output terminal outputs a second difference output signal.