3538449

Information

• Patent Grant
• 3538449

• References
• Source

• Patent Number

  3,538,449

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1970
  54 years ago

• CPC

  • H03F3/45071 - with semiconductor devices only
  • H03F1/48 - of aperiodic amplifiers
  • H03F2203/45028 - the differential amplifier amplifying transistors are folded cascode coupled transistors
  • H03F2203/45202 - the differential amplifier contains only resistors in the load
  • H03F2203/45208 - the dif amp being of the long tail pair type, one current source being coupled to the common emitter of the amplifying transistors
  • H03F2203/45258 - Resistors are added in the source circuit of the amplifying FETs of the dif amp
  • H03F2203/45612 - the IC comprising one or more input source followers as input stages in the IC

• US Classifications

  • 330 - Amplifiers