×

Low power loss current digital-to-analog converter used in an implantable pulse generator

  • US 7,539,538 B2
  • Filed: 05/26/2005
  • Issued: 05/26/2009
  • Est. Priority Date: 05/28/2004
  • Status: Active Grant
First Claim
Patent Images

1. An implantable stimulator device, comprising:

  • a first electrode implantable adjacent to tissue to be stimulated; and

    a first stage in a first output current source or sink coupled to the first electrode, wherein the first stage comprises a first transistor for passing an output current along a first output path to the first electrode, wherein the drain-to-source voltage drop across the first transistor is less than a drain-to-source voltage drop of the first transistor when operating in a saturation mode,wherein the output current is set by a reference current input to the first stage, andwherein the output current equals the reference current.

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