Title:
ANALOG SIGNAL PROCESSING CIRCUIT
Document Type and Number:
Japanese Patent JPS61244128
Kind Code:
A
Abstract:
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 therebetween 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 splitters 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 representative 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 selection signals of the ranging circuit.
Inventors:
JIYOSEFU CHIYAARUZU ENJIERU
Application Number:
JP8917286A
Publication Date:
October 30, 1986
Filing Date:
April 16, 1986
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
G06F3/05; G06F11/00; H03M1/12; (IPC1-7): G06F3/05; H03M1/12
Attorney, Agent or Firm:
Koichiro Kato
Previous Patent: ADJUSTING METHOD FOR DIRECT CURRENT VOLTAGE SUPPLY CIRCUIT
Next Patent: TRANSMISSION SYSTEM FOR ANALOG SIGNAL
Next Patent: TRANSMISSION SYSTEM FOR ANALOG SIGNAL