AD7985* PRODUCT PAGE QUICK LINKS Last Content Update: 04/14/2017COMPARABLE PARTSREFERENCE MATERIALS View a parametric search of comparable parts. Product Selection Guide • SAR ADC & Driver Quick-Match Guide EVALUATION KITSTechnical Articles • AD7985 Evaluation Board • MS-1779: Nine Often Overlooked ADC Specifications • MS-2210: Designing Power Supplies for High Speed ADC DOCUMENTATION • MS-2689: Isolating SPI for High Bandwidth Sensors Application NotesTutorials • AN-742: Frequency Domain Response of Switched- • MT-002: What the Nyquist Criterion Means to Your Capacitor ADCs Sampled Data System Design Data Sheet • MT-031: Grounding Data Converters and Solving the • AD7985: 16-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP Mystery of "AGND" and "DGND" Data Sheet Technical BooksDESIGN RESOURCES • The Data Conversion Handbook, 2005 • AD7985 Material Declaration User Guides • PCN-PDN Information • UG-727: Evaluating the AD7944/AD7985/AD7986 14-/16-/ • Quality And Reliability 18-Bit, PulSAR ADCs • Symbols and Footprints REFERENCE DESIGNSDISCUSSIONS • CN0260 View all AD7985 EngineerZone Discussions. SAMPLE AND BUY Visit the product page to see pricing options. TECHNICAL SUPPORT Submit a technical question or find your regional support number. DOCUMENT FEEDBACK Submit feedback for this data sheet. This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified. Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION CONVERSION MODES OF OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT Internal Reference, REF = 4.096 V (PDREF Low) External 1.2 V Reference and Internal Buffer (PDREF High) External Reference (PDREF High, REFIN Low) Reference Decoupling POWER SUPPLY DIGITAL INTERFACE DATA READING OPTIONS Reading During Conversion, Fast Host (Turbo or Normal Mode) Split-Reading, Any Speed Host (Turbo or Normal Mode) Reading During Acquisition, Any Speed Host (Turbo or Normal Mode) /CS MODE, 3-WIRE WITHOUT BUSY INDICATOR /CS MODE, 3-WIRE WITH BUSY INDICATOR /CS MODE, 4-WIRE WITHOUT BUSY INDICATOR /CS MODE, 4-WIRE WITH BUSY INDICATOR CHAIN MODE WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATIONS INFORMATION LAYOUT EVALUATING THE AD7985 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
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