×

Method for trimming the temperature coefficient of a floating gate voltage reference

  • US 7,324,380 B2
  • Filed: 12/15/2006
  • Issued: 01/29/2008
  • Est. Priority Date: 02/15/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method of providing a reference voltage in an integrated circuit, comprising:

  • programming a threshold voltage of a first non-volatile memory (NVM) transistor while coupled with a second NVM transistor;

    coupling a first capacitor between a floating gate of the first NVM transistor and a first voltage supply during the programming step;

    generating a single-ended reference voltage in response to the programmed threshold voltage of the first NVM transistor; and

    thenadjusting a temperature coefficient associated with the single-ended reference voltage by introducing a first p-n junction in series with the first capacitor.

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