Patents Assigned to Fujitsu Visi Limited
  • Patent number: 5043731
    Abstract: A digital-to-analog converter includes a ladder type resistor network having stages equal in number to bits of a digital input signal, each of the stages including a first resistor and a second resistor mutually connected in series via a node. A first switch, which is provided for each of the stages, selectively supplies either an upper limit voltage or a lower limit voltage to a corresponding one of the stages in accordance with a logical value of a corresponding one of the bits of the digital input signal. An analog signal output terminal is coupled to the node of one of the stages which corresponds to a most significant bit of the digital input signal. An analog output signal is output via the analog signal output terminal. An offset level control resistor has a first end connected to the node of one of the stages which corresponds to a least significant bit of the digital input signal and a second end.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: August 27, 1991
    Assignees: Fujitsu Limited, Fujitsu VLSI Limited, Fujitsu Limited, Fujitsu Visi Limited
    Inventor: Hirokazu Nishimura