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Current-mode logic circuit having a wide operating range

  • US 9,722,604 B2
  • Filed: 02/27/2015
  • Issued: 08/01/2017
  • Est. Priority Date: 02/27/2015
  • Status: Active Grant
First Claim
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1. A current-mode logic (CML) circuit, comprising:

  • a differential transistor pair having a differential input port configured to receive a differential input voltage, a bias port configured for coupling to a current source, and a differential output port distinct from the differential input port; and

    a load circuit coupled to the differential output port, the load circuit comprising;

    an active inductive load;

    a cross-coupled transistor pair having sources directly coupled to a supply voltage; and

    a switch comprising a first pair of transistors coupled between drains of the cross-coupled transistor pair and drains of the differential transistor pair, a transistor width of the first pair of transistors of the switch being smaller than a transistor width of the cross-coupled transistor pair.

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