Datasheet AD7690 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 18-Bit, 1.5 LSB INL, 400 kSPS PulSAR® Differential ADC in MSOP/QFN |
| Seiten / Seite | 25 / 3 — AD7690. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 7/14—Rev. B to … |
| Revision | C |
| Dateiformat / Größe | PDF / 684 Kb |
| Dokumentensprache | Englisch |
AD7690. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 7/14—Rev. B to Rev. C. 7/11—Rev. A to Rev. B. 3/07—Rev. 0 to Rev. A
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AD7690 Data Sheet TABLE OF CONTENTS
Features .. 1 Driver Amplifier Choice ... 14 Applications ... 1 Single-to-Differential Driver .. 15 Application Example .. 1 Voltage Reference Input .. 15 General Description ... 1 Power Supply ... 16 Revision History ... 2 Supplying the ADC from the Reference .. 16 Specifications ... 3 Digital Interface .. 16 Timing Specifications ... 5 CS Mode, 3-Wire Without Busy Indicator ... 17 Absolute Maximum Ratings .. 6 CS Mode, 3-Wire With Busy Indicator ... 18 ESD Caution .. 6 CS Mode, 4-Wire Without Busy Indicator ... 19 Pin Configurations and Function Descriptions ... 7 CS Mode, 4-Wire With Busy Indicator ... 20 Terminology .. 8 Chain Mode Without Busy Indicator .. 21 Typical Performance Characteristics ... 9 Chain Mode with Busy Indicator ... 22 Theory of Operation .. 12 Application Hints ... 23 Circuit Information .. 12 Layout .. 23 Converter Operation .. 12 Evaluating the AD7690 Performance .. 23 Typical Connection Diagram.. 13 Outline Dimensions ... 24 Analog Inputs .. 14 Ordering Guide .. 24
REVISION HISTORY 7/14—Rev. B to Rev. C
Changes to Gain Error in Table 2 .. 3 Changed QFN (LFCSP) to LFCSP .. Throughout Change to Gain Error Temperature Drift in Table 2 .. 3 Changes to Features Section.. 1 Change to Zero Temperature Drift in Table 2 ... 3 Added Patent Note, Note 1 .. 1 Changes to Power Dissipation in Table 3 ... 4 Changes to Evaluating the AD7690 Performance Section .. 23 Change to Conversion Time: CNV Rising Edge to Data Updated Outline Dimensions ... 24 Available in Table 4.. 5 Changes to Ordering Guide .. 24 Change to Acquisition Time in Table 4 .. 5 Changes to Figure 12... 9
7/11—Rev. A to Rev. B
Change to Figure 22 Caption .. 11 Changes to Common-Mode Input Range Min Parameter ... 3 Changes to Circuit Information Section ... 12 Added EPAD Note to Figure 6 and Table 6 ... 7 Change to Table 7 ... 13 Updated Outline Dimensions ... 24 Change to Endnote 1 of Figure 26 .. 13 Changes to Ordering Guide .. 24 Added Figure 29 ... 14 Changes to Driver Amplifier Choice Section ... 14
3/07—Rev. 0 to Rev. A
Change to Evaluating the AD7690’s Performance Section ... 23 Removed Endnote Regarding QFN Package .. Universal Updated Outline Dimensions ... 24 Changes to Features .. 1 Changes to Ordering Guide .. 24 Changes to Table 1 .. 1 Changes to Figure 2 .. 1
4/06—Revision 0: Initial Version
Rev. C | Page 2 of 24 Document Outline FEATURES APPLICATIONS APPLICATION EXAMPLE GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE 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 AD7690 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
AD7690 Data Sheet TABLE OF CONTENTS
Features .. 1 Driver Amplifier Choice ... 14 Applications ... 1 Single-to-Differential Driver .. 15 Application Example .. 1 Voltage Reference Input .. 15 General Description ... 1 Power Supply ... 16 Revision History ... 2 Supplying the ADC from the Reference .. 16 Specifications ... 3 Digital Interface .. 16 Timing Specifications ... 5 CS Mode, 3-Wire Without Busy Indicator ... 17 Absolute Maximum Ratings .. 6 CS Mode, 3-Wire With Busy Indicator ... 18 ESD Caution .. 6 CS Mode, 4-Wire Without Busy Indicator ... 19 Pin Configurations and Function Descriptions ... 7 CS Mode, 4-Wire With Busy Indicator ... 20 Terminology .. 8 Chain Mode Without Busy Indicator .. 21 Typical Performance Characteristics ... 9 Chain Mode with Busy Indicator ... 22 Theory of Operation .. 12 Application Hints ... 23 Circuit Information .. 12 Layout .. 23 Converter Operation .. 12 Evaluating the AD7690 Performance .. 23 Typical Connection Diagram.. 13 Outline Dimensions ... 24 Analog Inputs .. 14 Ordering Guide .. 24
REVISION HISTORY 7/14—Rev. B to Rev. C
Changes to Gain Error in Table 2 .. 3 Changed QFN (LFCSP) to LFCSP .. Throughout Change to Gain Error Temperature Drift in Table 2 .. 3 Changes to Features Section.. 1 Change to Zero Temperature Drift in Table 2 ... 3 Added Patent Note, Note 1 .. 1 Changes to Power Dissipation in Table 3 ... 4 Changes to Evaluating the AD7690 Performance Section .. 23 Change to Conversion Time: CNV Rising Edge to Data Updated Outline Dimensions ... 24 Available in Table 4.. 5 Changes to Ordering Guide .. 24 Change to Acquisition Time in Table 4 .. 5 Changes to Figure 12... 9
7/11—Rev. A to Rev. B
Change to Figure 22 Caption .. 11 Changes to Common-Mode Input Range Min Parameter ... 3 Changes to Circuit Information Section ... 12 Added EPAD Note to Figure 6 and Table 6 ... 7 Change to Table 7 ... 13 Updated Outline Dimensions ... 24 Change to Endnote 1 of Figure 26 .. 13 Changes to Ordering Guide .. 24 Added Figure 29 ... 14 Changes to Driver Amplifier Choice Section ... 14
3/07—Rev. 0 to Rev. A
Change to Evaluating the AD7690’s Performance Section ... 23 Removed Endnote Regarding QFN Package .. Universal Updated Outline Dimensions ... 24 Changes to Features .. 1 Changes to Ordering Guide .. 24 Changes to Table 1 .. 1 Changes to Figure 2 .. 1
4/06—Revision 0: Initial Version
Rev. C | Page 2 of 24 Document Outline FEATURES APPLICATIONS APPLICATION EXAMPLE GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE 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 AD7690 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE