Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Slope control of leading or trailing edge of rectangular or...
Patent
1996-06-28
1998-05-26
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Slope control of leading or trailing edge of rectangular or...
327310, 327381, 327384, 326 29, H03K 1716, H03K 604, H03F 326
Patent
active
057572178
ABSTRACT:
A driver circuit for transmitting data via an output node thereof to a transmission line includes a first driving device coupled to the output node and a second driving device coupled to the same output node. The driver circuit further includes a slew rate controller coupled to the first and second driving devices. The slew rate controller includes a first reference device coupled to the first driving device. The first reference device generates a first current. The slew rate controller also includes a second reference device coupled to the second driving device. The second reference device generates a second current. The slew rate controller further includes a summing device, coupled to the first and second reference devices. The summing node is also coupled to the output node, via an integrating device, to the output node. The summing device generates at the output node a slew rate proportional to the first current when the first driving device is substantially conducting. The summing device also generates at the output node a slew rate proportional to the second current when the second driving device is substantially conducting.
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Callahan Timothy P.
Englund Terry L.
Intel Corporation
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