Datasheet AD7265 (Analog Devices) - 3

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AD7265 Data Sheet TABLE OF CONTENTS
Features ...1 Digital Inputs... 18 General Description ..1 VDRIVE ... 18 Functional Block Diagram...1 Modes of Operation .. 19 Product Highlights ..1 Normal Mode .. 19 Revision History ..2 Partial Power-Down Mode .. 19 Specifications ...3 Full Power-Down Mode .. 20 Timing Specifications...5 Power-Up Times .. 21 Absolute Maximum Ratings ..6 Power vs. Throughput Rate.. 21 ESD Caution ..6 Serial Interface... 22 Pin Configurations and Function Descriptions ...7 Microprocessor Interfacing ... 23 Typical Performance Characteristics ...9 AD7265 to ADSP-218x .. 23 Terminology ..11 AD7265 to ADSP-BF53x ... 24 Theory of Operation..13 AD7265 to TMS320C541... 24 Circuit Information..13 AD7265 to DSP563xx .. 25 Converter Operation..13 Application Hints .. 26 Analog Input Structure ..13 Grounding and Layout .. 26 Analog Inputs ..14 PCB Design Guidelines for LFCSP .. 26 Analog Input Selection...17 Evaluating the AD7265 Performance... 26 Output Coding...17 Outline Dimensions .. 27 Transfer Functions ...18 Ordering Guide ... 27
REVISION HISTORY 1/2017—Rev. A to Rev. B
Changed CP-32-2 to CP-32-7 ...Throughout Changes to Figure 2 ...7 Updated Outline Dimensions ..27 Changes to Ordering Guide ...27
11/2006—Rev. 0 to Rev. A
Changes to Format..Universal Changes to Reference Input/Output Section..4 Changes to Table 4 ...7 Changes to Terminology Section ...11 Changes to Figure 24 and Dif erential Mode Section...15 Changes to Figure 29 ...16 Changes to AD7265 to ADSP-BF53x Section ..24 Updated Outline Dimensions ..27 Changes to Ordering Guide ...27
4/2005—Revision 0: Initial Version
Rev. B | Page 2 of 28 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ANALOG INPUT STRUCTURE ANALOG INPUTS Single-Ended Mode Differential Mode Driving Differential Inputs Using an Op Amp Pair Pseudo Differential Mode ANALOG INPUT SELECTION OUTPUT CODING TRANSFER FUNCTIONS DIGITAL INPUTS VDRIVE MODES OF OPERATION NORMAL MODE PARTIAL POWER-DOWN MODE FULL POWER-DOWN MODE POWER-UP TIMES POWER vs. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7265 TO ADSP-218x AD7265 to ADSP-BF53x AD7265 TO TMS320C541 AD7265 TO DSP563xx APPLICATION HINTS GROUNDING AND LAYOUT PCB DESIGN GUIDELINES FOR LFCSP EVALUATING THE AD7265 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE