Comparator Selection Guide 2007 www.analog.com/everywhere Overview The basic function of a comparator is to determine whether an input voltage is higher or lower than a reference voltage and to set the output to one of two levels. Comparators have a wide range of uses, such as 1-bit analog-to-digital conversion, polarity identification, switch driving, square or triangular wave generation, pulse edge generation, voltage detectors, and battery management. Analog Devices is proud to offer an exciting new portfolio of high speed and low power comparators to meet your most demanding applications. Combining ADI’s comparators with other ADI components creates superior solutions, such as those highlighted in the application matrix below. For more detailed information about either of these applications, refer to the ADI Complementary Part Data Sheet Applications section or send an email to [email protected]. Application ADI Comparator Part No. ADI Complementary Part No./Type Detect and amplify low level RF burst pulses ADCMP580 AD8318/log amp High speed, low jitter programmable clock generation ADCMP572 AD9540/DDS High speed, low jitter clock input for reduced phase noise and improved ADC performance ADCMP552 AD9445, AD9446/ADC High Speed Comparators 3.3V ADI’s high speed comparators offer these features: 5V TRANSMISSION LINE • Performance up to 150 ps prop delay • >10 GHz input equivalent bandwidth ADCMP553 AD8561 PECL TTL • <200 fs jitter with <15 ps of overdrive and slew Superior performance makes ADI’s new line of high speed comparators ideal for a wide variety Here an ADCMP553 converts an arbitrary signal source of performance driven applications that range within its common-mode range into 3.3 V PECL and drives the transmission line. At the far end an AD8561 receives from high speed triggers to clock generation and the signal and converts it into TTL/CMOS-compatible logic. recovery. These devices feature true differential inputs, making them ideal for line receiver Signal distribution and translation. applications. A differential latch and programmable hysteresis are included in most devices. Output options are ECL-, PECL-, CML-, and TTL/CMOS-compatible. 50± 50± 1.3V Comparators are often used in digital systems to recover clock timing signals. High speed square waves transmitted over a distance, even tens of centimeters, can become distorted due to stray capacitance and inductance. Poor layout or improper termination can also cause reflections on the transmission line, further distorting the signal waveform. A high speed comparator can be used to recover the distorted waveform while maintaining a minimum of delay. Low Power Comparators VCC VCC VINA ADCMP341 ADCMP343 400mV INA_L MUX MUX INA_U OUTA OUTA 400mV VINB OUTB INB_L MUX INB_U MUX VINA The ADCMP341/ADCMP343 ICs combine two low power, low voltage comparators with a 400 mV reference in a tiny INA_U 5-lead SOT-23 package. Operating within a supply range INA_L of 1.7 V to 5.5 V, the devices only draw 6.5 μA typical, making them ideal for low voltage system monitoring VINB and portable applications. Hysteresis is determined using three resistors in a string configuration with the upper INB_U and lower tap points connected to the INA_U and INA_L INB_L pins of each comparator, respectively. The comparator’s output internally selects which pin is connected to the comparator inputs. A change of state in the comparator output will result in one of the inputs being switched in to the comparator while the other is switched out. This functionality will provide the user with a fully flexible and ADCMP341 ADCMP343 simple method of setting the hysteresis. The comparator outputs are open-drain with the output stage sinking capability guaranteed greater than 5 mA over temperature. The IC family offers different features depending upon the design need—for example, the ADCMP341 has noninverting inputs and the ADCMP343 has inverting inputs. The devices are available in commercial, industrial, and automotive temperature ranges. GND OUTB GND APPLICATIONS t Portable applications t LED/relay driving t Li-Ion monitoring t Opto-isolator driving t Handheld instruments t Control systems $0.90 $0.90 High Speed Comparators Propagation Delay (ns) Typ No. Per Package Total Power (mW) Supply Voltage (V) No. of Supplies Input Range (V) Logic Output Adjustable Hysteresis Latch Enable Pin AD790 45 1 250 ±15 3 −VS to VS − 2 TTL/CMOS Fixed Yes AD8561 7 1 65 ±5 2 −5.0 to +3.0 Diff/TTL — Yes Part No. Package 8-lead DIP, 8-lead SOIC 8-lead SOIC, 8-lead TSSOP Minimum Output Rise/ Pulse Width Fall Time Shutdown Price @1k* — — — 3.67 — 3.8/1.5 ns — 1.76 — 3.8/1.5 ns — 3.69 — 2.5/1.1 ns — 2.00 — — 2.5/1.1 ns — — Yes 3.37 3.05 — — — 3.05 AD8564 8 4 150 ±5 2 −5.0 to +3.0 TTL/CMOS — — 16-lead SOIC, 16-lead TSSOP AD8611 5.5 1 50 3 to 5 1 0 to 3 Diff/TTL — Yes 8-lead MSOP, 8-lead SOIC AD8612 AD96685 5.5 6 2 1 100 120 3 to 5 +5, −5.2 1 2 0 to 3 −2.5 to +5.0 Diff/TTL Diff/ECL — — Yes Yes AD96687 6 2 240 +5, −5.2 2 −2.5 to +5.0 Diff/ECL — Yes 0.75 2 60 3.3 to 5 1 −0.2 to VCC − 2 PECL — Yes 16-lead QSOP 700 ps 500 ps — 2.40 PECL Yes Yes 20-lead QSOP 700 ps 500 ps — 3.00 ADCMP551 14-lead TSSOP 16-lead SOIC 16-lead DIP, 16-lead SOIC, 20-lead PLCC ADCMP552 0.75 2 60 3.3 to 5 1 −0.2 to VCC − 2 ADCMP553 0.75 1 30 3.3 to 5 1 −0.2 to VCC − 2 PECL — Yes 8-lead MSOP 700 ps 500 ps — 1.80 ADCMP561 ADCMP562 0.75 0.75 2 2 160 160 +5, −5.2 +5, −5.2 2 2 −2 to +3 −2 to +3 PECL PECL — Yes Yes Yes 16-lead QSOP 20-lead QSOP 700 ps 700 ps 500 ps 500 ps — — 2.40 2.40 ADCMP563 0.75 2 120 +5, −5.2 2 −2 to +3 ECL — Yes 16-lead LFCSP, 16-lead QSOP 700 ps 500 ps — 2.40 ADCMP564 ADCMP565 ADCMP566 ADCMP567 0.75 0.3 0.25 0.25 2 2 2 2 120 435 450 520 +5, −5.2 +5, −5.2 +5, −5.2 +5, −5.2 2 2 2 2 −2 to +3 −2 to 3 −2 to +3 −2 to +3 ECL ECL ECL PECL Yes — — — Yes Yes Yes Yes 20-lead QSOP 20-lead PLCC 32-lead LFCSP 32-lead LFCSP 700 ps 200 ps 200 ps 200 ps 500 ps 165 ps 165 ps 165 ps — — — — 2.40 4.90 3.60 3.60 ADCMP572 0.15 1 145 3.3 to 5 1 −0.2 to VCCI − 2.1 CML Yes Yes 16-lead LFCSP 80 ps 35 ps — 7.00 −0.2 to VCCI − 2.1 PECL Yes Yes 16-lead LFCSP 80 ps 35 ps — 7.00 CML ECL PECL Yes Yes Yes Yes Yes Yes 16-lead LFCSP 16-lead LFCSP 16-lead LFCSP 5-lead SC70, 5-lead SOT-23 80 ps 80 ps 80 ps 35 ps 35 ps 35 ps — — — 7.00 7.00 7.00 3 ns — — 1.70 ADCMP573 0.15 1 145 3.3 to 5 1 ADCMP580 ADCMP581 ADCMP582 0.15 0.15 0.15 1 1 1 240 240 240 +5, −5.2 +5, −5.2 +5, −5.2 2 2 2 ADCMP600 3 1 6 2.5 to 5.5 1 ADCMP601 3 1 6 2.5 to 5.5 −2 to +3 −2 to +3 −2 to +3 −0.2 to VCC + 0.2 TTL/CMOS — — 1 −0.2 to VCC + 0.2 TTL/CMOS Yes Yes 6-lead SC70 3 ns — — 1.75 TTL/CMOS Yes Yes 8-lead MSOP 3 ns — Yes 1.85 ADCMP602 3 1 6 2.5 to 5.5 2 −0.2 to VCC + 0.2 ADCMP603 3 1 6 2.5 to 5.5 3 −0.5 to VCC + 0.5 TTL/CMOS Yes Yes 12-lead LFCSP 3 ns — Yes 1.85 1 −0.2 to VCC + 0.2 LVDS — — 6-lead SC70 1 ns — — 2.15 LVDS Yes Yes 12-lead LFCSP 1 ns — Yes 2.35 ADCMP604 1.5 1 42 2.5 to 5.5 ADCMP605 1.5 1 42 2.5 to 5.5 2 −0.2 to VCC + 0.2 ADCMP606 1 1 62 2.5 to 5.5 1 −0.2 to VCC + 0.2 CML — — 6-lead SC70 600 ps — — 2.15 2 −0.2 to VCC + 0.2 CML Yes Yes 12-lead LFCSP 600 ps — Yes 2.35 TTL/CMOS — — 6-lead SC70 35 ns — Yes 0.58 TTL/CMOS Yes Yes 8-lead MSOP 35 ns — Yes 0.63 — 16-lead SOIC, 16-lead TSSOP — — — 3.35 ADCMP607 1 1 62 2.5 to 5.5 ADCMP608 30 1 1 2.5 to 5.5 1 −0.2 to VCC + 0.2 ADCMP609 30 1 1 2.5 to 5.5 1 −0.2 to VCC + 0.2 CMP401 23 4 110 ±5 2 −5.0 to +4.0 TTL/CMOS — Low Power Comparators Part No. ADCMP341 ADCMP343 ADCMP350 ADCMP354 ADCMP356 ADCMP361 ADCMP370 ADCMP371 ADCMP670 CMP04 No. Per Package 2 2 1 1 1 1 1 1 2 Internal Reference Yes Yes Yes Yes Yes Yes No No Yes Reference Accuracy (±%) 0.275 0.275 3.5 3.5 3.5 0.275 — — 1.50 Supply Voltage (V) 1.7 to 5.5 1.7 to 5.5 2.25 to 5.5 2.25 to 5.5 2.25 to 5.5 1.7 to 5.5 2.25 to 5.5 2.25 to 5.5 1.7 to 5.5 Supply Current (𝛍A) Typ 6.5 6.5 10.0 10.0 10.0 6.5 4.0 4.0 5.7 Input Range (V) 0 to VCC 0 to VCC 0 to 22 0 to 22 0 to 22 0 to VCC 0 to 22 0 to 22 0 to VCC Propagation Delay (𝛍s) Typ 10.0 10.0 5.0 5.0 5.0 10.0 5.0 5.0 10.0 4 No — 5 800.0 0 to VCC − 1.5 1.3 Hysteresis Logic I/O Package Adjustable Adjustable Internal Internal Internal Internal Internal Internal Internal Open-drain Open-drain Open-drain/active low Open-drain/active high Push-pull/active high Open-drain Open-drain Push-pull Open-drain 8-lead SOT-23 8-lead SOT-23 4-lead SC70 4-lead SC70 4-lead SC70 5-lead SOT-23 5-lead SC70 5-lead SC70 6-lead TSOT Price @1k* 0.90 0.90 0.31 0.31 0.31 0.60 0.28 0.28 1.40 — Open-collector 14-lead SOIC 4.75 *The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. dollars in the United States ex factor per unit for the stated volume. Pricing displayed for evaluation boards and kits is based on 1-piece pricing. Online Interactive Selection Tools Analog Devices is committed to providing design engineers with the best components and technologies available in order to make their designs a reality. However, in a growing number of cases, the biggest challenge is finding that single component that completes your solution quickly. That is why Analog Devices has introduced its new suite of interactive selection tables. These interactive selection tables have been carefully designed to provide engineers with the flexibility, accuracy, and speed they need to define, prioritize, and select those parts that are best suited for their project. As depicted by the screen shot on right, each interactive selection guide contains a predefined list of critical design parameters associated with that particular technology. Understanding that each design is unique, this guide will allow the user to sort using a particular set of key parameters. Not only will this tool help you optimize your design, but it will do it in record time. For a complete listing of interactive selection tables go to www.analog.com/en/pSearch. Screen shot of interactive selection table. Applications Engineering Support Analog Devices provides the user with the opportunity to ask more in-depth questions to a network of design engineers whose expertise in comparators is unparalleled. This free service can be accessed by sending an email to [email protected]. In order for our engineers to thoroughly explore your specific inquiries, please allow up to 24 hours for a reply. Samples and Evaluation Boards For those engineers and technicians who need to satisfy their curiosity, Analog Devices offers samples and evaluation boards on a large number of the products listed in this selection guide. In most cases, samples and evaluation boards are available for immediate delivery. Please consult the online samples ordering page for additional information and restrictions. This page can be accessed from each individual product page by clicking on the Price, Packaging, and Availability link. You can also find out additional ordering and pricing information for evaluation boards in the individual product pricing charts located on the online product pages. Analog Devices, Inc. Worldwide Headquarters Analog Devices, Inc. One Technology Way P.O. Box 9106 Norwood, MA 02062-9106 U.S.A. Tel: 781.329.4700 (800.262.5643, U.S.A. only) Fax: 781.461.3113 Analog Devices, Inc. Europe Headquarters Analog Devices, Inc. Wilhelm-Wagenfeld-Str. 6 80807 Munich Germany Tel: 49.89.76903.0 Fax: 49.89.76903.157 Analog Devices, Inc. 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