초록 ▼

A method for temperature measurement with voltage variation offset implemented by comparing a sensing voltage with a reference voltage, wherein the sensing voltage and the reference voltage synchronously vary with a power supply, whereby the voltage variation between the sensing voltage and the refe

A method for temperature measurement with voltage variation offset implemented by comparing a sensing voltage with a reference voltage, wherein the sensing voltage and the reference voltage synchronously vary with a power supply, whereby the voltage variation between the sensing voltage and the reference voltage is obviated. An apparatus for temperature measurement includes a thermal detecting element, a sensing voltage dividing circuit connected between the thermal detecting element and the power supply, a reference voltage dividing circuit connected to the power supply, and a comparator connected to the sensing voltage dividing circuit and the reference voltage dividing circuit.

대표청구항 ▼

1. A method for temperature measurement with voltage variation offset, the method comprising the steps of:applying a thermal detecting element adapted to sense temperature of an electronic element; applying a sensing voltage dividing circuit coupled between a power supply and the thermal detecting e

1. A method for temperature measurement with voltage variation offset, the method comprising the steps of:applying a thermal detecting element adapted to sense temperature of an electronic element; applying a sensing voltage dividing circuit coupled between a power supply and the thermal detecting element to obtain a current; obtaining a sensing voltage from the sensing voltage dividing circuit, wherein the sensing voltage varies based on voltage variation of the power supply; obtaining a reference voltage from a reference voltage dividing circuit connected to the power supply; and comparing the sensing voltage with the reference voltage in a comparator to obtain an analog signal, wherein the analog signal is further converted into a digital signal by an A/D converter.