| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of a conventional differential output circuit employing a CMOS circuit that VCM variations with an undesirable magnitude take place due to effects caused by variations in a power supply, temperature and a process or the like. SOLUTION: A low amplitude differential output circuit disclosed herein includes: a pre-buffer circuit 1 for outputting main buffer drive signals MINT / MINB being differential signals by a noninverting drive signal MINT and an inverting drive signal MINB which are complementary to each other; and a main buffer circuit 2 connected to the pre-buffer circuit 1 and for outputting differential output signals OUTT / OUTB in response to the main buffer drive signals MINT / MINB, the amplitude of each of the noninverting drive signal MINT and the inverting drive signal MINB is a voltage between a first level VDD and a second level GND, and the level of each the noninverting drive signal MINT and the inverting drive signal MINB takes the same level between a middle level, of the first level and the second level, and the first level. COPYRIGHT: (C)2006,JPO&NCIPI
|
