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Layout Synthesis and Loop Parameter Optimization of a Low-Jitter All-Digital Pixel Clock Generator
This paper presents a dual-loop ADPLL suitable for video pixel clock generation. The dual-loop architecture where a fast subloop works as a DCO inside a main loop is chosen since it can efficiently suppress the ring oscillator phase noise. In order to satisfy a wide tuning range and fine resolution...
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Published in: | IEEE journal of solid-state circuits 2014-03, Vol.49 (3), p.657-672 |
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container_title | IEEE journal of solid-state circuits |
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creator | Kim, WooSeok Park, Jaejin Park, Hojin Jeong, Deog-Kyoon |
description | This paper presents a dual-loop ADPLL suitable for video pixel clock generation. The dual-loop architecture where a fast subloop works as a DCO inside a main loop is chosen since it can efficiently suppress the ring oscillator phase noise. In order to satisfy a wide tuning range and fine resolution requirements in the pixel clock PLL, the TDC and DCO with two-step and bottom-up control are employed. An s-domain model is utilized to tune the loop parameters so that the dual-loop PLL has the optimum jitter performance. The measurement results match well with the proposed s-domain model and clearly show the effectiveness of the dual loop in suppressing the phase noise of the DCO. We propose a new cell-based layout technique to avoid performance degradation during automatic placement and routing, which is compatible with the conventional digital design environment. A chip that occupies 0.032 mm 2 has been fabricated in the 28-nm CMOS technology. The synthesized DCO shows 1.7-LSB DNL which is close to a full-custom layout. The rms integrated jitter is only 15 ps at 250 MHz, even though PLL operates at the extremely low input frequency of 100 kHz. Power consumption is 3.1 mW at 250 MHz with a 1.0-V supply. |
doi_str_mv | 10.1109/JSSC.2014.2298455 |
format | article |
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The dual-loop architecture where a fast subloop works as a DCO inside a main loop is chosen since it can efficiently suppress the ring oscillator phase noise. In order to satisfy a wide tuning range and fine resolution requirements in the pixel clock PLL, the TDC and DCO with two-step and bottom-up control are employed. An s-domain model is utilized to tune the loop parameters so that the dual-loop PLL has the optimum jitter performance. The measurement results match well with the proposed s-domain model and clearly show the effectiveness of the dual loop in suppressing the phase noise of the DCO. We propose a new cell-based layout technique to avoid performance degradation during automatic placement and routing, which is compatible with the conventional digital design environment. A chip that occupies 0.032 mm 2 has been fabricated in the 28-nm CMOS technology. The synthesized DCO shows 1.7-LSB DNL which is close to a full-custom layout. The rms integrated jitter is only 15 ps at 250 MHz, even though PLL operates at the extremely low input frequency of 100 kHz. Power consumption is 3.1 mW at 250 MHz with a 1.0-V supply.</description><identifier>ISSN: 0018-9200</identifier><identifier>EISSN: 1558-173X</identifier><identifier>DOI: 10.1109/JSSC.2014.2298455</identifier><identifier>CODEN: IJSCBC</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>All-digital PLL ; automatic placement and routing (auto P&R) ; cell-based ; Clocks ; Computer architecture ; DCO linearity ; dual-loop PLL ; Jitter ; long-term jitter ; Microprocessors ; Phase locked loops ; Phase noise ; pixel clock generator (PCG) ; Ring oscillators ; synthesizable PLL</subject><ispartof>IEEE journal of solid-state circuits, 2014-03, Vol.49 (3), p.657-672</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Mar 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c359t-91c5bd36bdf04b007799c62a5efb78f01882d8cc9e09561fafc0b3d7f6bb8d823</citedby><cites>FETCH-LOGICAL-c359t-91c5bd36bdf04b007799c62a5efb78f01882d8cc9e09561fafc0b3d7f6bb8d823</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6757001$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,54796</link.rule.ids></links><search><creatorcontrib>Kim, WooSeok</creatorcontrib><creatorcontrib>Park, Jaejin</creatorcontrib><creatorcontrib>Park, Hojin</creatorcontrib><creatorcontrib>Jeong, Deog-Kyoon</creatorcontrib><title>Layout Synthesis and Loop Parameter Optimization of a Low-Jitter All-Digital Pixel Clock Generator</title><title>IEEE journal of solid-state circuits</title><addtitle>JSSC</addtitle><description>This paper presents a dual-loop ADPLL suitable for video pixel clock generation. The dual-loop architecture where a fast subloop works as a DCO inside a main loop is chosen since it can efficiently suppress the ring oscillator phase noise. In order to satisfy a wide tuning range and fine resolution requirements in the pixel clock PLL, the TDC and DCO with two-step and bottom-up control are employed. An s-domain model is utilized to tune the loop parameters so that the dual-loop PLL has the optimum jitter performance. The measurement results match well with the proposed s-domain model and clearly show the effectiveness of the dual loop in suppressing the phase noise of the DCO. We propose a new cell-based layout technique to avoid performance degradation during automatic placement and routing, which is compatible with the conventional digital design environment. A chip that occupies 0.032 mm 2 has been fabricated in the 28-nm CMOS technology. The synthesized DCO shows 1.7-LSB DNL which is close to a full-custom layout. The rms integrated jitter is only 15 ps at 250 MHz, even though PLL operates at the extremely low input frequency of 100 kHz. Power consumption is 3.1 mW at 250 MHz with a 1.0-V supply.</description><subject>All-digital PLL</subject><subject>automatic placement and routing (auto P&R)</subject><subject>cell-based</subject><subject>Clocks</subject><subject>Computer architecture</subject><subject>DCO linearity</subject><subject>dual-loop PLL</subject><subject>Jitter</subject><subject>long-term jitter</subject><subject>Microprocessors</subject><subject>Phase locked loops</subject><subject>Phase noise</subject><subject>pixel clock generator (PCG)</subject><subject>Ring oscillators</subject><subject>synthesizable PLL</subject><issn>0018-9200</issn><issn>1558-173X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNo9kFFLwzAQx4MoOKcfQHwJ-NyZpE2bPI6q0zHYYAq-hTRNNLNrapKh89PbsuHTcdzvf3f8ALjGaIIx4nfz9bqcEISzCSGcZZSegBGmlCW4SN9OwQghzBJOEDoHFyFs-jbLGB6BaiH3bhfhet_GDx1sgLKt4cK5Dq6kl1sdtYfLLtqt_ZXRuhY6A2UPfCdzG4fhtGmSe_tuo2zgyv7oBpaNU59wplvtZXT-EpwZ2QR9daxj8Pr48FI-JYvl7LmcLhKVUh4TjhWt6jSvaoOyCqGi4FzlRFJtqoKZ_n9GaqYU14jTHBtpFKrSujB5VbGakXQMbg97O---djpEsXE73_YnBaaIYoI4ynoKHyjlXQheG9F5u5V-LzASg0oxqBSDSnFU2WduDhmrtf7n84IWvcf0DxzFcDI</recordid><startdate>20140301</startdate><enddate>20140301</enddate><creator>Kim, WooSeok</creator><creator>Park, Jaejin</creator><creator>Park, Hojin</creator><creator>Jeong, Deog-Kyoon</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></search><sort><creationdate>20140301</creationdate><title>Layout Synthesis and Loop Parameter Optimization of a Low-Jitter All-Digital Pixel Clock Generator</title><author>Kim, WooSeok ; Park, Jaejin ; Park, Hojin ; Jeong, Deog-Kyoon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c359t-91c5bd36bdf04b007799c62a5efb78f01882d8cc9e09561fafc0b3d7f6bb8d823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>All-digital PLL</topic><topic>automatic placement and routing (auto P&R)</topic><topic>cell-based</topic><topic>Clocks</topic><topic>Computer architecture</topic><topic>DCO linearity</topic><topic>dual-loop PLL</topic><topic>Jitter</topic><topic>long-term jitter</topic><topic>Microprocessors</topic><topic>Phase locked loops</topic><topic>Phase noise</topic><topic>pixel clock generator (PCG)</topic><topic>Ring oscillators</topic><topic>synthesizable PLL</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, WooSeok</creatorcontrib><creatorcontrib>Park, Jaejin</creatorcontrib><creatorcontrib>Park, Hojin</creatorcontrib><creatorcontrib>Jeong, Deog-Kyoon</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 Online</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE journal of solid-state circuits</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, WooSeok</au><au>Park, Jaejin</au><au>Park, Hojin</au><au>Jeong, Deog-Kyoon</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Layout Synthesis and Loop Parameter Optimization of a Low-Jitter All-Digital Pixel Clock Generator</atitle><jtitle>IEEE journal of solid-state circuits</jtitle><stitle>JSSC</stitle><date>2014-03-01</date><risdate>2014</risdate><volume>49</volume><issue>3</issue><spage>657</spage><epage>672</epage><pages>657-672</pages><issn>0018-9200</issn><eissn>1558-173X</eissn><coden>IJSCBC</coden><abstract>This paper presents a dual-loop ADPLL suitable for video pixel clock generation. The dual-loop architecture where a fast subloop works as a DCO inside a main loop is chosen since it can efficiently suppress the ring oscillator phase noise. In order to satisfy a wide tuning range and fine resolution requirements in the pixel clock PLL, the TDC and DCO with two-step and bottom-up control are employed. An s-domain model is utilized to tune the loop parameters so that the dual-loop PLL has the optimum jitter performance. The measurement results match well with the proposed s-domain model and clearly show the effectiveness of the dual loop in suppressing the phase noise of the DCO. We propose a new cell-based layout technique to avoid performance degradation during automatic placement and routing, which is compatible with the conventional digital design environment. A chip that occupies 0.032 mm 2 has been fabricated in the 28-nm CMOS technology. The synthesized DCO shows 1.7-LSB DNL which is close to a full-custom layout. The rms integrated jitter is only 15 ps at 250 MHz, even though PLL operates at the extremely low input frequency of 100 kHz. Power consumption is 3.1 mW at 250 MHz with a 1.0-V supply.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/JSSC.2014.2298455</doi><tpages>16</tpages></addata></record> |
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subjects | All-digital PLL automatic placement and routing (auto P&R) cell-based Clocks Computer architecture DCO linearity dual-loop PLL Jitter long-term jitter Microprocessors Phase locked loops Phase noise pixel clock generator (PCG) Ring oscillators synthesizable PLL |
title | Layout Synthesis and Loop Parameter Optimization of a Low-Jitter All-Digital Pixel Clock Generator |
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