Datasheet AD7986 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 18-Bit, 2 MSPS PulSAR 15 mW ADC in QFN |
| Seiten / Seite | 29 / 3 — AD7986. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 3/16—Rev. C to … |
| Revision | D |
| Dateiformat / Größe | PDF / 629 Kb |
| Dokumentensprache | Englisch |
AD7986. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 3/16—Rev. C to Rev. D. 8/14—Rev. B to Rev. C. 3/11—Rev. A to Rev. B
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AD7986 Data Sheet TABLE OF CONTENTS
Features .. 1 Analog Inputs ... 15 Applications ... 1 Driver Amplifier Choice ... 15 Typical Application Circuit ... 1 Voltage Reference Input .. 16 General Description ... 1 Power Supply ... 16 Revision History ... 2 Digital Interface .. 17 Specifications ... 3 Data Reading Options ... 18 Timing Specifications .. 5 CS Mode, 3-Wire Without Busy Indicator ... 19 Absolute Maximum Ratings .. 6 CS Mode, 3-Wire with Busy Indicator .. 20 ESD Caution .. 6 CS Mode, 4-Wire Without Busy Indicator ... 21 Pin Configuration and Function Descriptions ... 7 CS Mode, 4-Wire with Busy Indicator .. 22 Typical Performance Characteristics ... 9 Chain Mode Without Busy Indicator .. 23 Terminology .. 12 Chain Mode with Busy Indicator ... 24 Theory of Operation .. 13 Application Hints ... 25 Circuit Information .. 13 Layout .. 25 Converter Operation .. 13 Evaluating the Performance of the AD7986 ... 25 Conversion Modes of Operation .. 13 Outline Dimensions ... 27 Typical Connection Diagram ... 14 Ordering Guide .. 27
REVISION HISTORY 3/16—Rev. C to Rev. D 8/14—Rev. B to Rev. C
Changes to Figure 1 and Table 1 ... 1 Replaced QFN with LFCSP .. Throughout Change to Transition Noise Parameter, Table 2 ... 3 Changed Application Diagram Section to Typical Application Deleted Endnote 4, Table 2 .. 3 Circuit Section ... 1 Changes to Figure 4 .. 8 Change to Features Section .. 1 Changes to Figure 23 .. 14 Added Patent Note, Note 2 ... 1 Changes to Driver Amplifier Choice Section ... 15 Changed 5 V to 4.096 V, Analog Input Heading, Table 7 ... 14 Changes to Reference Decoupling Section ... 16 Changes to Evaluating the Performance of the AD7986 Changes to Reading During Conversion, Fast Host (Turbo or Section .. 25 Normal Mode) Section and Split-Reading, Any Speed Host Updated Outline Dimensions ... 27 (Turbo or Normal Mode) Section .. 18 Changes to Ordering Guide .. 27 Changes to Figure 30 .. 21
3/11—Rev. A to Rev. B
Changes to Figure 34 .. 23 Added Common-Mode Input Range Parameter, Table 2 .. 3 Changes to Evaluating the Performance of the AD7986 Section .. 25 Updated Outline Dimensions ... 27
8/10—Rev. 0 to Rev. A
Changes to Ordering Guide .. 27 Changes to Conversion Time: CNV Rising Edge to Data Available (Turbo Mode/Normal Mode) Parameter, Table 4 .. 5 Changes to Figure 32 .. 22
4/09—Revision 0: Initial Version
Rev. D | Page 2 of 28 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT 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 = 4.096V (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 Hosts (Turbo or Normal Mode) Split-Reading, Any Speed Host (Turbo or Normal Mode) Reading During Acquisition, Any Speed Hosts (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 APPLICATION HINTS LAYOUT EVALUATING THE PERFORMANCE OF THE AD7986 OUTLINE DIMENSIONS ORDERING GUIDE
AD7986 Data Sheet TABLE OF CONTENTS
Features .. 1 Analog Inputs ... 15 Applications ... 1 Driver Amplifier Choice ... 15 Typical Application Circuit ... 1 Voltage Reference Input .. 16 General Description ... 1 Power Supply ... 16 Revision History ... 2 Digital Interface .. 17 Specifications ... 3 Data Reading Options ... 18 Timing Specifications .. 5 CS Mode, 3-Wire Without Busy Indicator ... 19 Absolute Maximum Ratings .. 6 CS Mode, 3-Wire with Busy Indicator .. 20 ESD Caution .. 6 CS Mode, 4-Wire Without Busy Indicator ... 21 Pin Configuration and Function Descriptions ... 7 CS Mode, 4-Wire with Busy Indicator .. 22 Typical Performance Characteristics ... 9 Chain Mode Without Busy Indicator .. 23 Terminology .. 12 Chain Mode with Busy Indicator ... 24 Theory of Operation .. 13 Application Hints ... 25 Circuit Information .. 13 Layout .. 25 Converter Operation .. 13 Evaluating the Performance of the AD7986 ... 25 Conversion Modes of Operation .. 13 Outline Dimensions ... 27 Typical Connection Diagram ... 14 Ordering Guide .. 27
REVISION HISTORY 3/16—Rev. C to Rev. D 8/14—Rev. B to Rev. C
Changes to Figure 1 and Table 1 ... 1 Replaced QFN with LFCSP .. Throughout Change to Transition Noise Parameter, Table 2 ... 3 Changed Application Diagram Section to Typical Application Deleted Endnote 4, Table 2 .. 3 Circuit Section ... 1 Changes to Figure 4 .. 8 Change to Features Section .. 1 Changes to Figure 23 .. 14 Added Patent Note, Note 2 ... 1 Changes to Driver Amplifier Choice Section ... 15 Changed 5 V to 4.096 V, Analog Input Heading, Table 7 ... 14 Changes to Reference Decoupling Section ... 16 Changes to Evaluating the Performance of the AD7986 Changes to Reading During Conversion, Fast Host (Turbo or Section .. 25 Normal Mode) Section and Split-Reading, Any Speed Host Updated Outline Dimensions ... 27 (Turbo or Normal Mode) Section .. 18 Changes to Ordering Guide .. 27 Changes to Figure 30 .. 21
3/11—Rev. A to Rev. B
Changes to Figure 34 .. 23 Added Common-Mode Input Range Parameter, Table 2 .. 3 Changes to Evaluating the Performance of the AD7986 Section .. 25 Updated Outline Dimensions ... 27
8/10—Rev. 0 to Rev. A
Changes to Ordering Guide .. 27 Changes to Conversion Time: CNV Rising Edge to Data Available (Turbo Mode/Normal Mode) Parameter, Table 4 .. 5 Changes to Figure 32 .. 22
4/09—Revision 0: Initial Version
Rev. D | Page 2 of 28 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT 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 = 4.096V (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 Hosts (Turbo or Normal Mode) Split-Reading, Any Speed Host (Turbo or Normal Mode) Reading During Acquisition, Any Speed Hosts (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 APPLICATION HINTS LAYOUT EVALUATING THE PERFORMANCE OF THE AD7986 OUTLINE DIMENSIONS ORDERING GUIDE