3644838

Information

• Patent Grant
• 3644838

• References
• Source

• Patent Number

  3,644,838

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • H03F3/4508 - using bipolar transistors as the active amplifying circuit
  • H03F3/3089 - comprising field-effect transistors in the control circuit
  • H03F3/34 - Dc amplifiers in which all stages are dc-coupled
  • H03F3/345 - with field-effect devices
  • H03F3/347 - in integrated circuits
  • H03F3/45291 - Folded cascode stages
  • H03F2203/45028 - the differential amplifier amplifying transistors are folded cascode coupled transistors
  • H03F2203/45304 - the common gate stage of a BIFET cascode dif amp being implemented fully by FETs
  • H03F2203/45308 - the common gate stage of a cascode dif amp being implemented as one mirror circuit
  • H03F2203/45476 - the CSC comprising a mirror circuit
  • H03F2203/45674 - the LC comprising one current mirror
  • H03F2203/45708 - the LC comprising one SEPP circuit as output stage

• US Classifications

  • 330 - Amplifiers