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Semiconductor device, method for manufacturing semiconductor device, tire, and moving object

  • US 10,035,386 B2
  • Filed: 05/09/2016
  • Issued: 07/31/2018
  • Est. Priority Date: 05/11/2015
  • Status: Active Grant
First Claim
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1. A tire comprising a semiconductor device, the semiconductor device comprising:

  • a first circuit portion comprising an analog-to-digital converter circuit and a sample-and-hold circuit;

    an antenna electrically connected to the first circuit portion; and

    a sensor element electrically connected to the first circuit portion,wherein the sensor element is configured to measure an air pressure of the tire,wherein the sample-and-hold circuit comprises a buffer circuit and a second circuit portion,wherein the second circuit portion comprises a transistor and a capacitor,wherein an analog potential is supplied to one of a source and a drain of the transistor through the buffer circuit,wherein charge corresponding to the analog potential is held at the other of the source and the drain of the transistor and in the capacitor by turning off the transistor, andwherein supply of a power supply voltage to the buffer circuit is stopped when the charge corresponding to the analog potential is held.

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