Minimal headroom, minimal area multi-terminal current steering c

Details Minimal headroom, minimal area multi-terminal current steering c Minimal headroom, minimal area multi-terminal current steering c

1998-06-03

2000-01-11

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327417, H03K 5153

Patent

active

060140453

ABSTRACT:
Minimal headroom, minimal area, multi-terminal current steering circuits for steering a current from a current source to any one of a plurality of outputs. The steering circuit provides controls to individual steering transistors so as to turn on the selected one of the plurality of steering transistors responsive to steering control signals. Minimal headroom is required, and beta dependent errors in the current output are minimized, by steering the current source through only a single transistor to the selected output. This also minimizes chip area. Alternate embodiments are disclosed and described.

REFERENCES:
patent: 5552742 (1996-09-01), Perkins
patent: 5694031 (1997-12-01), Stanojevic
patent: 5790060 (1998-08-01), Tesch
patent: 5825239 (1998-10-01), Adal

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