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AD6649EBZ Datasheet(PDF) 3 Page - Analog Devices |
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AD6649EBZ Datasheet(HTML) 3 Page - Analog Devices |
3 / 41 page AD6649 Data Sheet Rev. C | Page 2 of 40 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Product Highlights ........................................................................... 3 Specifications..................................................................................... 4 ADC DC Specifications............................................................... 4 ADC AC Specifications ............................................................... 5 Digital Specifications ................................................................... 6 Switching Specifications .............................................................. 8 Timing Specifications .................................................................. 9 Absolute Maximum Ratings.......................................................... 10 Thermal Characteristics ............................................................ 10 ESD Caution................................................................................ 10 Pin Configuration and Function Descriptions........................... 11 Typical Performance Characteristics ........................................... 13 Equivalent Circuits......................................................................... 16 Theory of Operation ...................................................................... 17 ADC Architecture ...................................................................... 17 Analog Input Considerations.................................................... 17 Voltage Reference ....................................................................... 19 Clock Input Considerations...................................................... 19 Power Dissipation and Standby Mode..................................... 20 Digital Outputs ........................................................................... 21 Overrange (OR).......................................................................... 21 Digital Processing........................................................................... 22 Numerically Controlled Oscillator (NCO) ............................. 22 NCO and FIR Filter Modes....................................................... 22 fS/4 Fixed-Frequency NCO ....................................................... 22 Numerically Controlled Oscillator (NCO) ................................. 23 Frequency Translation ............................................................... 23 NCO Synchronization ............................................................... 23 NCO Amplitude and Phase Dither.......................................... 23 FIR Filters ........................................................................................ 24 FIR Synchronization .................................................................. 24 Filter Performance...................................................................... 24 Output NCO ............................................................................... 25 ADC Overrange and Gain Control.............................................. 26 ADC Overrange (OR)................................................................ 26 Gain Switching............................................................................ 26 DC Correction ................................................................................ 27 Channel/Chip Synchronization.................................................... 28 Serial Port Interface (SPI).............................................................. 29 Configuration Using the SPI..................................................... 29 Hardware Interface..................................................................... 29 SPI Accessible Features.............................................................. 30 Memory Map .................................................................................. 31 Reading the Memory Map Register Table............................... 31 Memory Map Register Table..................................................... 32 Memory Map Register Description ......................................... 36 Applications Information .............................................................. 39 Design Guidelines ...................................................................... 39 Outline Dimensions....................................................................... 40 Ordering Guide .......................................................................... 40 REVISION HISTORY 1/14—Rev. B to Rev. C Changes to FIR Filters Section.......................................................24 Added Table 12; Renumbered Sequentially .................................24 Changes to Figure 43 and Figure 44..............................................25 1/13—Rev. A to Rev. B Change to Features Section ..............................................................1 Change to Input Referred Noise Parameter, Table 1.....................4 Changes to Table 2.............................................................................5 Change to Logic Input/Output (SDIO) Parameter, Table 3.........6 Changes to Table 4.............................................................................8 Change to Reading the Register Memory Map Table Section .......31 Changes to Table 15.........................................................................33 Change to Memory Map Register Description Section .............36 Updated Outline Dimensions........................................................40 9/11—Rev. 0 to Rev. A Changes to Table 1.............................................................................4 Changes to Table 3.............................................................................6 Changes to Table 4.............................................................................8 Changes to Table 8.......................................................................... 11 Added Overrange (OR) Section ................................................... 21 Changes to Channel/Chip Synchronization Section ................. 28 Change to the NCO/FIR SYNC Pin Control (Register 0x59) .. 38 4/11—Revision 0: Initial Version |
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