| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential circuit capable of optionally and independently setting a band and stability required for differential components in a differential operation while setting a band and stability required for in-phase components in an in-phase operation. SOLUTION: The differential circuit comprises: a first voltage current converter (Gm1) for receiving outputs of first and second amplifiers (A1, A2) for amplifying an input signal; first and second impedance elements (R1, R2) connected in series between outputs of the first voltage current converter; an in-phase signal detector (CM) for detecting the in-phase signal components from the outputs of the first and second amplifiers; second and third voltage current converters (Gm2, Gm3) for applying voltage current conversion to an output of the in-phase signal detector; a first phase compensator (PC1) connected between the output of the first voltage current converter and the output of the first amplifier and a second phase compensator (PC2) connected between the output of the first voltage current converter and the output of the second amplifier; and a third phase compensator (PC3) connected between an output of the in-phase signal detector and the first and second impedance elements. COPYRIGHT: (C)2005,JPO&NCIPI
|
