Editing Comparator (section)

===Speed and power===
While in general comparators are "fast," their circuits are not immune to the classic speed-power tradeoff. High speed comparators use transistors with larger aspect ratios and hence also consume more power.<ref>{{cite journal |last1=Rogenmoser |first1=R. |last2=Kaeslin |first2=H. |title=The impact of transistor sizing on power efficiency in submicron CMOS circuits |journal=IEEE Journal of Solid-State Circuits |volume=32 |issue=7 |date=July 1997 |pages=1142–1145|doi=10.1109/4.597307 |bibcode=1997IJSSC..32.1142R |s2cid=15703793 }}</ref> Depending on the application, select either a comparator with high speed or one that saves power. For example, nano-powered comparators in space-saving chip-scale packages (UCSP), DFN or SC70 packages such as MAX9027,<ref name=qv_pk/4268>{{cite web |title=MAX9025, MAX9026, MAX9027, MAX9028: UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference |publisher=Maxim Integrated Products |url=http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4268 |url-status=dead |archive-date=2008-05-04 |archive-url=https://web.archive.org/web/20080504155318/http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4268}}</ref> LTC1540,<ref name=LTC1540>{{cite web |title=LTC1540 - Nanopower Comparator with Reference |publisher=Linear Technology |url=http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1154,C1002,C1463,P1593 |archive-url=https://web.archive.org/web/20110103043546/http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1154,C1002,C1463,P1593 |archive-date=2011-01-03 |url-status=dead}}</ref> LPV7215,<ref>{{cite web |title=LPV7215 - Micropower, CMOS Input, RRIO, 1.8V, Push-Pull Output Comparator from the PowerWise® Family |publisher=National Semiconductor Corporation |url=http://www.national.com/pf/LP/LPV7215.html |archive-url=https://web.archive.org/web/20090503133424/http://www.national.com/pf/LP/LPV7215.html |archive-date=2009-05-03 |url-status=dead}}</ref> MAX9060,<ref name=qv_pk/5823>{{cite web |title=MAX9060, MAX9061, MAX9062, MAX9063, MAX9064: Ultra-Small, Low-Power Single Comparators in 4-Bump UCSP and 5-SOT23 |publisher=Maxim Integrated Products |url=http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5823 |url-status=dead |archive-date=2008-05-17 |archive-url=https://web.archive.org/web/20080517010639/http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5823}}</ref> and MCP6541,<ref>{{cite web |title=MCP6541: In Production |publisher=Microchip Technology Inc. |url=http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010414 |archive-url=https://web.archive.org/web/20140213033924/http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010414 |archive-date=2014-02-13 |url-status=dead}}</ref> are ideal for ultra-low-power, portable applications. Likewise if a comparator is needed to implement a relaxation oscillator circuit to create a high speed clock signal then comparators having few nano seconds of propagation delay may be suitable. ADCMP572 (CML output),<ref>{{cite web |title=ADCMP572: Ultrafast 3.3 V Single-Supply Comparator w/CML Output Drivers |publisher=Analog Devices, Inc. |url=https://www.analog.com/en/products/adcmp572.html}}</ref> LMH7220 (LVDS Output),<ref>{{cite web |title=LMH7220: High Speed Comparator with LVDS Output |publisher=Texas Instruments |url=http://www.ti.com/product/lmh7220}}</ref> MAX999 (CMOS output / TTL output),<ref>{{cite web |title=MAX961, MAX962, MAX963, MAX964, MAX997, MAX999: Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators |publisher=Maxim Integrated Products |url=http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1481 |url-status=dead |archive-url=https://web.archive.org/web/20100414060742/http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1481 |archive-date=2010-04-14}}</ref> LT1719 (CMOS output / TTL output),<ref>{{cite web |title=LT1719 - 4.5ns Single/Dual Supply 3V/5V Comparator with Rail-to-Rail Output |publisher=Linear Technology |url=http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1154,C1004,C1012,P1817 |archive-url=https://web.archive.org/web/20110102135645/http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1154,C1004,C1012,P1817 |archive-date=2011-01-02 |url-status=dead}}</ref> MAX9010 (TTL output),<ref>{{cite web |title=MAX9010, MAX9011, MAX9012, MAX9013: SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators |publisher=Maxim Integrated Products |url=http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2490/t/al |url-status=dead |archive-url=https://web.archive.org/web/20091228173145/http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2490/t/al |archive-date=2009-12-28}}</ref> and MAX9601 (PECL output),<ref>{{cite web |title=MAX9600, MAX9601, MAX9602: Dual ECL and Dual/Quad PECL, 500ps, Ultra-High-Speed Comparators |publisher=Maxim Integrated Products |url=http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3400/t/al |url-status=dead |archive-url=https://web.archive.org/web/20100328173649/http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3400/t/al |archive-date=2010-03-28}}</ref> are examples of some good high speed comparators.