Compensation of thermally induced voltage errors

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11876490
APP PUB NO 20220329211A1
SERIAL NO

17587105

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Described embodiments include an integrated circuit for temperature gradient compensation of a bandgap voltage. A bandgap core circuit has a bandgap feedback input, a bandgap adjustment input and a bandgap reference output. A resistor is coupled between the bandgap adjustment input and a ground terminal. An offset and slope correction circuit has an offset correction output that is coupled to the bandgap adjustment input. A signal at the offset correction output is trimmed at an ambient temperature. A thermal error cancellation (TEC) circuit has a TEC output coupled to the bandgap adjustment input. The TEC circuit includes first and second temperature sensors that are located apart from each other. A signal at the TEC output is responsive to temperatures at the first and second temperature sensors. An amplifier has an amplifier input and an amplifier output. The amplifier input is coupled to the bandgap reference output.

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Patent Owner(s)

  • AGILENT TECHNOLOGIES TEXAS INSTRUMENTS INCORPORATED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jadhav, Akshay Yashwant Pune, IN 4 1
Krishnan, Sandeep Shylaja Bangalore, IN 16 20
Vishwanath, Tallam Bangalore, IN 9 4

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