| 摘要 |
A low voltage analog switch having low leakage off-current and including a first transmission gate having a first N-channel transistor and a first P-channel transistor, each first and second transistor having respective drain and source terminals coupled together to form switch drain and source terminals, and a second transmission gate having a second N-channel transistor coupled in series to a second P-channel transistor coupled in series to a third N-channel transistor, the second transmission gate being coupled in parallel to the first transmission gate, the gates of the second and third N-channel transistors being coupled to the gate of the first N-channel transistor and a gate of the second P-channel transistor being coupled to the gate of the first P-channel transistor. In another embodiment, the second transmission gate includes a second P-channel transistor coupled in series to a second N-channel transistor coupled in series to a third P-channel transistor, the second transmission gate being coupled in parallel to the first transmission gate, the gates of the second and third P-channel transistors being coupled to the gate of the first P-channel transistor and a gate of the second N-channel transistor being coupled to the gate of the first N-channel transistor.
|
