Integrated circuit to reduce switching noise

Details Integrated circuit to reduce switching noise Integrated circuit to reduce switching noise

1986-08-29

1988-09-13

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307200B, 307303, 307443, 307448, 307451, 357 2314, 377 57, 377 60, 377 76, H03K 17687, H03K 1908, H03K 1716, H01L 2978

Patent

active

047711957

ABSTRACT:
A transistor (14) having a plurality of sub-transistors (29a-f) includes a voltage controlling device (45). The voltage controlling device induces a current through an elongated gate (24) producing a voltage drop across the elongated gate (24) by providing a path between one end of the gate and ground (32). The voltage drop across the elongated gate (24) sequentially reduces the gate voltage present at each of the sub-transistors (29a-f), thereby reducing the amount of current which the sub-transistors (29a-f) can conduct. The voltage controlling circuit (45) gradually reduces the current through the elongated gate (24), thereby increasing the amount of current through the sub-transistors (29a-f). The time interval over which the conductive device induces a current through the elongated gate (24) can be adjusted by positioning the connection to the gate of a transistor (62) along the elongated gate (24). The limiting of current through the output sub-transistors (29a-f) for a predetermined time interval reduces the generation of output noise by controlling the rate at which current is changing in that output.

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