Rail-to-Rail, Fast, Low Power 2.5 V to 5.5 V, Single-Supply TTL/CMOS Comparator Data Sheet AD8468 FEATURES FUNCTIONAL BLOCK DIAGRAM Fully specified rail to rail at V = 2.5 V to 5.5 V CC Input common-mode voltage from 0.2 V to V + 0.2 V CC NONINVERTING + Low glitch CMOS-/TTL-compatible output stage INPUT 40 ns propagation delay Q OUTPUT AD8468 Low power: 2 mW at 2.5 V INVERTING Shutdown pin INPUT Power supply rejection > 60 dB 40C to +125C operation S DN Qualified for automotive applications Figure 1. APPLICATIONS Automotive applications High speed instrumentation Clock and data signal restoration Logic level shifting or translation High speed line receivers Threshold detection Peak and zero-crossing detectors High speed trigger circuitry Pulse-width modulators Current-/voltage-controlled oscillators GENERAL DESCRIPTION The AD8468 is a fast comparator fabricated on XFCB2.0, an The TTL-/CMOS-compatible output stage is designed to drive Analog Devices, Inc., proprietary process. This comparator is up to 15 pF with full rated timing specifications and to degrade exceptionally versatile and easy to use. Features include an input in a graceful and linear fashion as additional capacitance is range from 0.2 V to VCC + 0.2 V, low noise, TTL-/CMOS- added. The input stage of the comparator offers robust protec- compatible output drivers, and shutdown inputs. The device tion against large input overdrive, and the outputs do not phase offers 40 ns propagation delays driving a 15 pF load with 10 mV reverse when the valid input signal range is exceeded. overdrive on 500 A typical supply current. The AD8468 is available in a tiny 6-lead SC70 package with a A flexible power supply scheme allows the device to operate single-ended output and a shutdown pin. with a single 2.5 V positive supply with a 0.2 V to + 2.7 V input signal range and up to a 5.5 V positive supply with a 0.2 V to +5.7 V input signal range. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20102015 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 08853-001AD8468 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information .................................................................7 Applications ....................................................................................... 1 Power/Ground Layout and Bypassing ........................................7 Functional Block Diagram .............................................................. 1 TTL-/CMOS-Compatible Output Stage ....................................7 General Description ......................................................................... 1 Optimizing Performance ..............................................................7 Revision History ............................................................................... 2 Comparator Propagation Delay Dispersion ..............................7 Specifications ..................................................................................... 3 Crossover Bias Point .....................................................................8 Electrical Characteristics ............................................................. 3 Minimum Input Slew Rate Requirement ...................................8 Absolute Maximum Ratings ............................................................ 4 Typical Application Circuits ............................................................9 Thermal Resistance ...................................................................... 4 Outline Dimensions ....................................................................... 10 ESD Caution .................................................................................. 4 Ordering Guide .......................................................................... 10 Pin Configuration and Function Descriptions ............................. 5 Automotive Products ................................................................. 10 Typical Performance Characteristics ............................................. 6 REVISION HISTORY 10/15Rev. 0 to Rev. A Changes to Table 2 ............................................................................ 4 10/10Revision 0: Initial Version Rev. A Page 2 of 12