link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 3 link to page 4 link to page 4 link to page 5 link to page 5 link to page 6 link to page 8 link to page 8 link to page 8 link to page 8 link to page 9 link to page 10 link to page 15 link to page 16 link to page 18 link to page 18 link to page 20 link to page 20 link to page 25 link to page 25 AD6645Data SheetTABLE OF CONTENTS Features .. 1 Explanation of Test Levels ..7 Applications ... 1 ESD Caution...7 General Description ... 1 Pin Configuration and Function Descriptions ..8 Product Highlights ... 1 Typical Performance Characteristics ..9 Functional Block Diagram .. 1 Equivalent Circuits ... 14 Revision History ... 2 Terminology .. 15 Specifications ... 3 Theory of Operation .. 17 DC Specifications ... 3 Applying the AD6645 .. 17 Digital Specifications ... 4 Layout Information .. 19 AC Specifications .. 4 Jitter Considerations .. 19 Switching Specifications .. 5 Outline Dimensions ... 24 Absolute Maximum Ratings .. 7 Ordering Guide .. 24 Thermal Resistance .. 7 REVISION HISTORY 9/2017—Rev. D to Rev. E7/2003—Rev. A to Rev. B. Changes to General Description and Product Highlights .. 1 Changes to Title .. 1 Changes to Operating Temperature Parameter, Table 5 .. 7 Changes to Features .. 1 Changes to Table 6 .. 7 Changes to Product Description ... 1 Changes to Ordering Guide .. 24 Changes to Specifications ... 3 Changes to Absolute Maximum Ratings .. 7 10/2008—Rev. C to Rev. D Changes to Ordering Guide .. 24 Added TQFP_EP Package .. Throughout Updated Outline Dimensions ... 20 Renamed Thermal Characteristics Section Thermal Resistance Section .. 7 6/2002—Rev. 0 to Rev. A. Added Table 6; Renumbered Sequential y .. 7 Change to DC Specifications ... 3 Moved Equivalent Circuits Section .. 14 Moved Terminology Section ... 15 Changes to Table 9 .. 20 Updated Outline Dimensions ... 24 Changes to Ordering Guide .. 24 12/2006—Rev. B to Rev. C Updated Format .. Universal Changes to Specifications .. 3 Changes to Jitter Considerations Section .. 19 Changes to Table 8, Bill of Materials .. 20 Changes to Figure 43, Evaluation Board Schematic .. 21 Changes to Figure 44 and Figure 46 ... 22 Updated Outline Dimensions ... 23 Changes to Ordering Guide .. 23 Rev. E | Page 2 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS DIGITAL SPECIFICATIONS AC SPECIFICATIONS SWITCHING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE EXPLANATION OF TEST LEVELS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS TERMINOLOGY THEORY OF OPERATION APPLYING THE AD6645 Encoding the AD6645 Driving the Analog Inputs Power Supplies Digital Outputs Grounding LAYOUT INFORMATION JITTER CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE