H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/10
H04J 3/02 (2006.01) G06F 3/05 (2006.01) G06F 11/00 (2006.01)
Patent
CA 1241778
ABSTRACT OF THE DISCLOSURE An analog signal processing circuit including both an analog signal multiplexer and a ranging circuit in cascade therewith is adapted for use in an integrated circuit. The multiplexer has a plurality of input current paths and an output current path. It responds to a set of coded selection signals to couple one of the input current paths to the output current path to permit current there- between and includes another circuit for maintaining the selected input current path at a predetermined potential, preferably ground potential. The ranging circuit has its input current path coupled to the output current path of the multiplexer and includes a plurality of current split- ters coupled in a cascaded chain having one end of the chain coupled to its input current path. The ranging circuit responds to another set of coded selection signals to draw current from one and another current paths to the output current path of the multiplexer. Current represen- tative of the current only through the other current paths of the current splitters is provided to the output current path of the ranging circuit. Accordingly, the current of the multiplexer is ranged at the output current path of the ranging circuit in accordance with the code of the selec- tion signals of the ranging circuit.
506761
Oldham And Company
Westinghouse Electric Corporation
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