Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1992-03-06
1993-09-14
Sikes, William L.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307246, 307289, 3072964, 3072965, 307473, 307571, 307577, H03K 17687, H03K 329
Patent
active
052452301
ABSTRACT:
An N-channel output stage having low substrate current injection during a standby mode includes a first transistor having a drain coupled to a source of supply voltage and a second transistor having a drain coupled to the source of the first transistor and a source for driving a load in a normal operating mode. A pair of multiplexers are respectively coupled to the gate of the first and second transistors. The multiplexers turn on the first transistor and couple an input signal to the gate of the second transistor in the normal operating mode, and couple a predetermined bias voltage to the gate of the first transistor and turn off the second transistor in a standby mode. The value of the bias voltage is selected to be approximately equal to VTOTAL/2+VT, wherein VTOTAL is equal to the total voltage across the output stage in the standby mode and VT is an N-channel threshold voltage. The voltage across either the first or second transistors is equal and reduced to VTOTAL/2, thus reducing injected substrate current.
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Chern Wen-Foo
Ohri Kul B.
Cunningham Terry D.
Sikes William L.
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