Temperature-insensitive Pseudo-resistor

A novel pseudo-resistor insensitive to temperature change is proposed. In order for the pseudo-resistor implemented in the previous capacitively coupled instrumentation amplifier (CCIA) or transimpedance amplifier (TIA) to be used in the industrial temperature range (-40 ℃ to 85 ℃), it is necessary...

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Bibliographic Details
Published inJournal of semiconductor technology and science Vol. 22; no. 1; pp. 47 - 51
Main Author Kim, Jong-Pal
Format Journal Article
LanguageEnglish
Published 대한전자공학회 01.02.2022
Subjects
전기공학
temperature
compensation
amplifier
sensitivity
Pseudo-resistor
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Summary:A novel pseudo-resistor insensitive to temperature change is proposed. In order for the pseudo-resistor implemented in the previous capacitively coupled instrumentation amplifier (CCIA) or transimpedance amplifier (TIA) to be used in the industrial temperature range (-40 ℃ to 85 ℃), it is necessary to develop a pseudo resistor insensitive to temperature change. The new pseudo-resistor can adjust the resistance value and the temperature sensitivity can be tuned. The pseudo-resistor is implemented using two PMOSs connected in series and a gate bias control block. A current proportional to the absolute temperature is used to control the magnitude of the pseudo-resistance and its temperature sensitivity. It was designed and laid out based on the 0.18 µm CMOS process, and as a result of simulation, it was possible to adjust the resistance value between 1.7 GΩ and 10.4 GΩ. The temperature sensitivity of the pseudo-resistor was able to obtain a minimum value of 91 ppm/℃ in the range of -40 ℃ to 85 ℃. KCI Citation Count: 0
ISSN:1598-1657
2233-4866
DOI:10.5573/JSTS.2022.22.1.47