Please download the dossier by clicking on the dossier button x
×

Analog signal processing circuit

  • US 4,626,831 A
  • Filed: 04/19/1985
  • Issued: 12/02/1986
  • Est. Priority Date: 04/19/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. An analog signal processing circuit adapted for use in an integrated circuit, said processing circuit comprising:

  • an analog signal multiplexing circuit including a plurality of input current paths, an output current path, a channel select circuit responsive to a first set of coded selection signals for selecting an input current path in accordance with the code of said first set of selection signals and for coupling said selected input current path to said output current path to permit current therebetween, and first circuit means for maintaining the selected input current path at a first predetermined potential; and

    a ranging circuit including an input and an output current path, said input current path of said ranging circuit being coupled to said output current path of said multiplexing circuit, a plurality of current splitters coupled in a cascaded chain having one end of said chain coupled to said input current path, each of said current splitters coupled to one and another current paths, a range select circuit responsive to a second set of coded selection signals for splitting the current of the input current path between said one and another current paths of said current splitters in a proportion as governed by the code of said second set of selection signals, and means for providing current at the output current path representative of the current through the other current paths of said current splitter, whereby the current of the input current path is ranged at the output current path in accordance with the code of the second set of selection signals.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×