Method and system for a temperature sensing crystal integrated circuit with digital temperature output

US8201995B2 · kind B2 · utility

Assignee

• Broadcom Corporation · US

Inventors

• Evan McCarthy · Brooks Road, US
• John Walley · Ladera Ranch, US
• Todd L. Brooks · Laguna Beach, US
• Vinay Chandrasekhar · Irvine, US
• Josephus Van Engelen · Carlsbad, US
• Jared Welz · Henry's Drive, US

Key dates

• Filing date: Feb 2, 2009
• Grant date: Jun 19, 2012
• Expiry date: Jan 10, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K7/32
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Aspects of a method and system for a temperature sensing crystal Integrated circuit with digital temperature output are provided. In this regard, an indication of temperature may be generated in an integrated circuit (IC) comprising a memory, a crystal or crystal oscillator, and at least a portion of an analog-to-digital converter. The temperature indication may be digitized via the analog-to-digital converter. Operation of one or more circuits may be controlled based on the digital temperature indication. The digital temperature indication may be communicated over a communication bus. An analog portion of the analog-to-digital converter may be integrated in the IC and may comprise, for example, a delta-sigma modulator. A digital portion of the analog-to-digital converter may be external to the IC and may comprise, for example, a digital filter.