An Accuracy-Improved and Internal Regulator-Free Temperature Sensor With a Non-Linear Current Mode Feedback Pseudo-PLL
An accuracy-improved and internal regulator-free temperature on-chip sensor is proposed. The proposed sensor outputs an accuracy-enhanced pulse width modulation (PWM) signal with a nonlinear current mode feedback pseudo-PLL (Phase-Locked Loop). The pseudo-PLL is able to greatly mitigate the nonlinea...
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| Veröffentlicht in: | IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2021-04, Vol.68 (4), p.1138-1142 |
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| container_title | IEEE transactions on circuits and systems. II, Express briefs |
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| creator | Li, Fanyang Cheng, Shuying |
| description | An accuracy-improved and internal regulator-free temperature on-chip sensor is proposed. The proposed sensor outputs an accuracy-enhanced pulse width modulation (PWM) signal with a nonlinear current mode feedback pseudo-PLL (Phase-Locked Loop). The pseudo-PLL is able to greatly mitigate the nonlinearity caused by process parameters (eg. threshold voltage and mobility of MOS transistor) without careful compensation. Furthermore, to optimize the area and power supply rejection without an internal regulator, a current mode input and feedback approach in the pseudo-PLL is also presented. The proposed sensor is fabricated with 0.18~\mu \text{m} standard CMOS process. The measurement results show that the power consumption of the sensor is only 2~\mu \text{W} under 1.2V supply voltage. With the supply voltage varying within 1~1.2V, the temperature detection error is maintained within +/−0.2°C in the range of −20°C to 100°C. And the corresponding power supply rejection (PSR) ratio and resolution achieve about 0.15°C/100mV and 0.12°C, respectively. |
| doi_str_mv | 10.1109/TCSII.2020.3035023 |
| format | Article |
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The proposed sensor outputs an accuracy-enhanced pulse width modulation (PWM) signal with a nonlinear current mode feedback pseudo-PLL (Phase-Locked Loop). The pseudo-PLL is able to greatly mitigate the nonlinearity caused by process parameters (eg. threshold voltage and mobility of MOS transistor) without careful compensation. Furthermore, to optimize the area and power supply rejection without an internal regulator, a current mode input and feedback approach in the pseudo-PLL is also presented. The proposed sensor is fabricated with <inline-formula> <tex-math notation="LaTeX">0.18~\mu \text{m} </tex-math></inline-formula> standard CMOS process. The measurement results show that the power consumption of the sensor is only <inline-formula> <tex-math notation="LaTeX">2~\mu \text{W} </tex-math></inline-formula> under 1.2V supply voltage. With the supply voltage varying within 1~1.2V, the temperature detection error is maintained within +/−0.2°C in the range of −20°C to 100°C. And the corresponding power supply rejection (PSR) ratio and resolution achieve about 0.15°C/100mV and 0.12°C, respectively.]]></description><identifier>ISSN: 1549-7747</identifier><identifier>EISSN: 1558-3791</identifier><identifier>DOI: 10.1109/TCSII.2020.3035023</identifier><identifier>CODEN: ICSPE5</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Accuracy ; CMOS ; current mode ; Error detection ; Feedback ; low power ; Mathematical model ; MOS devices ; MOSFET ; Nonlinearity ; Oscillators ; Phase locked loops ; Phase locked systems ; Power consumption ; Power supplies ; Power supply ; Process parameters ; Pulse duration modulation ; Regulators ; Rejection ; Sensors ; Temperature sensor ; Temperature sensors ; Threshold voltage ; Transistors</subject><ispartof>IEEE transactions on circuits and systems. II, Express briefs, 2021-04, Vol.68 (4), p.1138-1142</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c246t-1944386f066e3f48f7be00becb16c437e5b180ed4058f80a9c8b5158e0a2006a3</cites><orcidid>0000-0002-1728-7867</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9245560$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9245560$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Li, Fanyang</creatorcontrib><creatorcontrib>Cheng, Shuying</creatorcontrib><title>An Accuracy-Improved and Internal Regulator-Free Temperature Sensor With a Non-Linear Current Mode Feedback Pseudo-PLL</title><title>IEEE transactions on circuits and systems. II, Express briefs</title><addtitle>TCSII</addtitle><description><![CDATA[An accuracy-improved and internal regulator-free temperature on-chip sensor is proposed. The proposed sensor outputs an accuracy-enhanced pulse width modulation (PWM) signal with a nonlinear current mode feedback pseudo-PLL (Phase-Locked Loop). The pseudo-PLL is able to greatly mitigate the nonlinearity caused by process parameters (eg. threshold voltage and mobility of MOS transistor) without careful compensation. Furthermore, to optimize the area and power supply rejection without an internal regulator, a current mode input and feedback approach in the pseudo-PLL is also presented. The proposed sensor is fabricated with <inline-formula> <tex-math notation="LaTeX">0.18~\mu \text{m} </tex-math></inline-formula> standard CMOS process. The measurement results show that the power consumption of the sensor is only <inline-formula> <tex-math notation="LaTeX">2~\mu \text{W} </tex-math></inline-formula> under 1.2V supply voltage. With the supply voltage varying within 1~1.2V, the temperature detection error is maintained within +/−0.2°C in the range of −20°C to 100°C. And the corresponding power supply rejection (PSR) ratio and resolution achieve about 0.15°C/100mV and 0.12°C, respectively.]]></description><subject>Accuracy</subject><subject>CMOS</subject><subject>current mode</subject><subject>Error detection</subject><subject>Feedback</subject><subject>low power</subject><subject>Mathematical model</subject><subject>MOS devices</subject><subject>MOSFET</subject><subject>Nonlinearity</subject><subject>Oscillators</subject><subject>Phase locked loops</subject><subject>Phase locked systems</subject><subject>Power consumption</subject><subject>Power supplies</subject><subject>Power supply</subject><subject>Process parameters</subject><subject>Pulse duration modulation</subject><subject>Regulators</subject><subject>Rejection</subject><subject>Sensors</subject><subject>Temperature sensor</subject><subject>Temperature sensors</subject><subject>Threshold voltage</subject><subject>Transistors</subject><issn>1549-7747</issn><issn>1558-3791</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kEtLw0AUhYMoWKt_QDcDrqfeeeWxLMVqIGqxFZdhMrnR1DZTZ5JC_72JFVf3Ls534HxBcM1gwhgkd6vZMk0nHDhMBAgFXJwEI6ZUTEWUsNPhlwmNIhmdBxferwF4AoKPgv20IVNjOqfNgabbnbN7LIluSpI2LbpGb8grfnQb3VpH5w6RrHC7Q6fbziFZYuOtI-91-0k0ebYNzeoGtSOzzjlsWvJkSyRzxLLQ5ossPHalpYssuwzOKr3xePV3x8Hb_H41e6TZy0M6m2bUcBm2lCVSijisIAxRVDKuogIBCjQFC40UEaqCxYClBBVXMejExIViKkbQHCDUYhzcHnv7Yd8d-jZf225Y5XOuIFR9P4g-xY8p46z3Dqt85-qtdoecQT74zX_95oPf_M9vD90coRoR_4GES6VCED8JBnY3</recordid><startdate>20210401</startdate><enddate>20210401</enddate><creator>Li, Fanyang</creator><creator>Cheng, Shuying</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-1728-7867</orcidid></search><sort><creationdate>20210401</creationdate><title>An Accuracy-Improved and Internal Regulator-Free Temperature Sensor With a Non-Linear Current Mode Feedback Pseudo-PLL</title><author>Li, Fanyang ; Cheng, Shuying</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c246t-1944386f066e3f48f7be00becb16c437e5b180ed4058f80a9c8b5158e0a2006a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Accuracy</topic><topic>CMOS</topic><topic>current mode</topic><topic>Error detection</topic><topic>Feedback</topic><topic>low power</topic><topic>Mathematical model</topic><topic>MOS devices</topic><topic>MOSFET</topic><topic>Nonlinearity</topic><topic>Oscillators</topic><topic>Phase locked loops</topic><topic>Phase locked systems</topic><topic>Power consumption</topic><topic>Power supplies</topic><topic>Power supply</topic><topic>Process parameters</topic><topic>Pulse duration modulation</topic><topic>Regulators</topic><topic>Rejection</topic><topic>Sensors</topic><topic>Temperature sensor</topic><topic>Temperature sensors</topic><topic>Threshold voltage</topic><topic>Transistors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Fanyang</creatorcontrib><creatorcontrib>Cheng, Shuying</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on circuits and systems. II, Express briefs</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Li, Fanyang</au><au>Cheng, Shuying</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An Accuracy-Improved and Internal Regulator-Free Temperature Sensor With a Non-Linear Current Mode Feedback Pseudo-PLL</atitle><jtitle>IEEE transactions on circuits and systems. II, Express briefs</jtitle><stitle>TCSII</stitle><date>2021-04-01</date><risdate>2021</risdate><volume>68</volume><issue>4</issue><spage>1138</spage><epage>1142</epage><pages>1138-1142</pages><issn>1549-7747</issn><eissn>1558-3791</eissn><coden>ICSPE5</coden><abstract><![CDATA[An accuracy-improved and internal regulator-free temperature on-chip sensor is proposed. The proposed sensor outputs an accuracy-enhanced pulse width modulation (PWM) signal with a nonlinear current mode feedback pseudo-PLL (Phase-Locked Loop). The pseudo-PLL is able to greatly mitigate the nonlinearity caused by process parameters (eg. threshold voltage and mobility of MOS transistor) without careful compensation. Furthermore, to optimize the area and power supply rejection without an internal regulator, a current mode input and feedback approach in the pseudo-PLL is also presented. The proposed sensor is fabricated with <inline-formula> <tex-math notation="LaTeX">0.18~\mu \text{m} </tex-math></inline-formula> standard CMOS process. The measurement results show that the power consumption of the sensor is only <inline-formula> <tex-math notation="LaTeX">2~\mu \text{W} </tex-math></inline-formula> under 1.2V supply voltage. With the supply voltage varying within 1~1.2V, the temperature detection error is maintained within +/−0.2°C in the range of −20°C to 100°C. And the corresponding power supply rejection (PSR) ratio and resolution achieve about 0.15°C/100mV and 0.12°C, respectively.]]></abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TCSII.2020.3035023</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-1728-7867</orcidid></addata></record> |
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| identifier | ISSN: 1549-7747 |
| ispartof | IEEE transactions on circuits and systems. II, Express briefs, 2021-04, Vol.68 (4), p.1138-1142 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Accuracy CMOS current mode Error detection Feedback low power Mathematical model MOS devices MOSFET Nonlinearity Oscillators Phase locked loops Phase locked systems Power consumption Power supplies Power supply Process parameters Pulse duration modulation Regulators Rejection Sensors Temperature sensor Temperature sensors Threshold voltage Transistors |
| title | An Accuracy-Improved and Internal Regulator-Free Temperature Sensor With a Non-Linear Current Mode Feedback Pseudo-PLL |
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