Datasheet AD7864 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | High Speed, Low Power, 4-channel Simultaneous Sampling, 12-Bit ADC |
| Pages / Page | 29 / 3 — AD7864. TABLE OF CONTENTS. REVISION HISTORY. 2/09—Rev. C to Rev. D. … |
| Revision | D |
| File Format / Size | PDF / 683 Kb |
| Document Language | English |
AD7864. TABLE OF CONTENTS. REVISION HISTORY. 2/09—Rev. C to Rev. D. 3/04—Rev. A to Rev. B. 2/09—Rev. B to Rev. C
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AD7864 TABLE OF CONTENTS
Features .. 1 Standby Mode Operation .. 18 Applications ... 1 Accessing the Output Data Registers ... 18 General Description ... 1 Offset and Full-Scale Adjustment .. 20 Functional Block Diagram .. 1 Positive Full-Scale Adjust .. 20 Product Highlights ... 1 Negative Full-Scale Adjust ... 20 Revision History ... 2 Dynamic Specifications ... 21 Specifications ... 3 Signal-to-Noise Ratio (SNR)... 21 Timing Characteristics .. 5 Effective Number of Bits ... 21 Absolute Maximum Ratings .. 6 Intermodulation Distortion .. 21 ESD Caution .. 6 AC Linearity Plots .. 22 Pin Configuration and Function Descriptions ... 7 Measuring Aperture Jitter .. 22 Terminology .. 9 Microprocessor Interfacing ... 24 Theory of Operation .. 11 AD7864 to ADSP-2100/ADSP-2101/ADSP-2102 Interface . 24 Converter Details .. 11 AD7864 to TMS320C5x Interface .. 24 Circuit Description ... 13 AD7864 to MC68HC000 Interface .. 24 Analog Input ... 13 Vector Motor Control .. 25 Selecting a Conversion Sequence ... 15 Multiple AD7864s in A System ... 26 Timing and Control ... 15 Outline Dimensions ... 27 Using an External Clock .. 17 Ordering Guide .. 27
REVISION HISTORY 2/09—Rev. C to Rev. D 3/04—Rev. A to Rev. B.
Change to t2 Parameter, Table 2 .. 5 Changes to Specifications and to Footnote 4 ... 2
2/09—Rev. B to Rev. C
Changes to Timing Characteristics Footnote 1 ... 4 Addition to Absolute Maximum Ratings ... 5 Updated Format .. Universal Changes to Ordering Guide ... 5 Changes to t5 Timing Parameter, Table 2... 5 Changes to Figure 7 ... 11 Changes to Figure 15 .. 20 Changes to Figure 11 .. 13 Changes to AD7864 to MC68HC000 Interface Section .. 24 Updated Outline Dimensions ... 19 Changes to Figure 25 .. 24 Added Revision History .. 20 Updated Outline Dimensions ... 29 Updated Publication Code .. 20 Changes to Ordering Guide .. 29 Rev. D | Page 2 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY THEORY OF OPERATION CONVERTER DETAILS Track-and-Hold Amplifiers Reference CIRCUIT DESCRIPTION ANALOG INPUT AD7864-1 AD7864-2 AD7864-3 SELECTING A CONVERSION SEQUENCE TIMING AND CONTROL Reading Between Each Conversion in the Conversion Sequence Reading After the Conversion Sequence USING AN EXTERNAL CLOCK STANDBY MODE OPERATION ACCESSING THE OUTPUT DATA REGISTERS OFFSET AND FULL-SCALE ADJUSTMENT POSITIVE FULL-SCALE ADJUST NEGATIVE FULL-SCALE ADJUST DYNAMIC SPECIFICATIONS SIGNAL-TO-NOISE RATIO (SNR) EFFECTIVE NUMBER OF BITS INTERMODULATION DISTORTION AC LINEARITY PLOTS MEASURING APERTURE JITTER MICROPROCESSOR INTERFACING AD7864 TO ADSP-2100/ADSP-2101/ADSP-2102 INTERFACE AD7864 TO TMS320C5x INTERFACE AD7864 TO MC68HC000 INTERFACE VECTOR MOTOR CONTROL MULTIPLE AD7864S IN A SYSTEM OUTLINE DIMENSIONS ORDERING GUIDE
AD7864 TABLE OF CONTENTS
Features .. 1 Standby Mode Operation .. 18 Applications ... 1 Accessing the Output Data Registers ... 18 General Description ... 1 Offset and Full-Scale Adjustment .. 20 Functional Block Diagram .. 1 Positive Full-Scale Adjust .. 20 Product Highlights ... 1 Negative Full-Scale Adjust ... 20 Revision History ... 2 Dynamic Specifications ... 21 Specifications ... 3 Signal-to-Noise Ratio (SNR)... 21 Timing Characteristics .. 5 Effective Number of Bits ... 21 Absolute Maximum Ratings .. 6 Intermodulation Distortion .. 21 ESD Caution .. 6 AC Linearity Plots .. 22 Pin Configuration and Function Descriptions ... 7 Measuring Aperture Jitter .. 22 Terminology .. 9 Microprocessor Interfacing ... 24 Theory of Operation .. 11 AD7864 to ADSP-2100/ADSP-2101/ADSP-2102 Interface . 24 Converter Details .. 11 AD7864 to TMS320C5x Interface .. 24 Circuit Description ... 13 AD7864 to MC68HC000 Interface .. 24 Analog Input ... 13 Vector Motor Control .. 25 Selecting a Conversion Sequence ... 15 Multiple AD7864s in A System ... 26 Timing and Control ... 15 Outline Dimensions ... 27 Using an External Clock .. 17 Ordering Guide .. 27
REVISION HISTORY 2/09—Rev. C to Rev. D 3/04—Rev. A to Rev. B.
Change to t2 Parameter, Table 2 .. 5 Changes to Specifications and to Footnote 4 ... 2
2/09—Rev. B to Rev. C
Changes to Timing Characteristics Footnote 1 ... 4 Addition to Absolute Maximum Ratings ... 5 Updated Format .. Universal Changes to Ordering Guide ... 5 Changes to t5 Timing Parameter, Table 2... 5 Changes to Figure 7 ... 11 Changes to Figure 15 .. 20 Changes to Figure 11 .. 13 Changes to AD7864 to MC68HC000 Interface Section .. 24 Updated Outline Dimensions ... 19 Changes to Figure 25 .. 24 Added Revision History .. 20 Updated Outline Dimensions ... 29 Updated Publication Code .. 20 Changes to Ordering Guide .. 29 Rev. D | Page 2 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY THEORY OF OPERATION CONVERTER DETAILS Track-and-Hold Amplifiers Reference CIRCUIT DESCRIPTION ANALOG INPUT AD7864-1 AD7864-2 AD7864-3 SELECTING A CONVERSION SEQUENCE TIMING AND CONTROL Reading Between Each Conversion in the Conversion Sequence Reading After the Conversion Sequence USING AN EXTERNAL CLOCK STANDBY MODE OPERATION ACCESSING THE OUTPUT DATA REGISTERS OFFSET AND FULL-SCALE ADJUSTMENT POSITIVE FULL-SCALE ADJUST NEGATIVE FULL-SCALE ADJUST DYNAMIC SPECIFICATIONS SIGNAL-TO-NOISE RATIO (SNR) EFFECTIVE NUMBER OF BITS INTERMODULATION DISTORTION AC LINEARITY PLOTS MEASURING APERTURE JITTER MICROPROCESSOR INTERFACING AD7864 TO ADSP-2100/ADSP-2101/ADSP-2102 INTERFACE AD7864 TO TMS320C5x INTERFACE AD7864 TO MC68HC000 INTERFACE VECTOR MOTOR CONTROL MULTIPLE AD7864S IN A SYSTEM OUTLINE DIMENSIONS ORDERING GUIDE
