| 摘要 |
A CMOS reference current source comprises two circuit branches connected in parallel between supply terminals. The first circuit branch includes a series connection of a bias current source (MP 1 ) and a first MOS transistor (MN 1 ) of a first conductivity type. The second circuit branch includes a series connection of a diode-connected MOS transistor (MP 2 ) of a second conductivity type, a second MOS transistor (MN 2 ) of the first conductivity type and a third MOS transistor (MN 3 ) of the first conductivity type. The first MOS transistor (MN 1 ) of the first conductivity type has its gate connected to the drain of the third MOS transistor (MN 3 ) of the first conductivity type. The second MOS transistor (MN 2 ) of the first conductivity type has its gate connected to the drain of the first MOS transistor (MN 1 ) of the first conductivity type. The third MOS transistor (MN 3 ) the first conductivity type has its gate connected to a bias source (MN 4 ).
|
