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AD6655 数据表(PDF) 2 Page - Analog Devices |
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AD6655 数据表(HTML) 2 Page - Analog Devices |
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2 / 84 page  AD6655 Data Sheet Rev. B | Page 2 of 84 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Product Highlights ........................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 3 General Description......................................................................... 4 Specifications..................................................................................... 5 ADC DC Specifications—AD6655-80/AD6655-105 .............. 5 ADC DC Specifications—AD6655-125/AD6655-150 ............ 6 ADC AC Specifications—AD6655-80/AD6655-105............... 7 ADC AC Specifications—AD6655-125/AD6655-150............. 8 Digital Specifications—AD6655-80/AD6655-105................... 9 Digital Specifications—AD6655-125/AD6655-150............... 11 Switching Specifications—AD6655-80/AD6655-105............ 13 Switching Specifications—AD6655-125/AD6655-150 ......... 14 Timing Specifications ................................................................ 15 Absolute Maximum Ratings.......................................................... 18 Thermal Characteristics ............................................................ 18 ESD Caution................................................................................ 18 Pin Configurations and Function Descriptions ......................... 19 Equivalent Circuits......................................................................... 23 Typical Performance Characteristics ........................................... 24 Theory of Operation ...................................................................... 29 ADC Architecture ...................................................................... 29 Analog Input Considerations.................................................... 29 Voltage Reference ....................................................................... 31 Clock Input Considerations...................................................... 32 Power Dissipation and Standby Mode..................................... 34 Digital Outputs ........................................................................... 35 Digital Downconverter .................................................................. 37 Downconverter Modes .............................................................. 37 Numerically Controlled Oscillator (NCO) ............................. 37 Half-Band Decimating Filter and FIR Filter........................... 37 fADC/8 Fixed-Frequency NCO ................................................... 37 Numerically Controlled Oscillator (NCO) ................................. 38 Frequency Translation ............................................................... 38 NCO Synchronization ............................................................... 38 Phase Offset................................................................................. 38 NCO Amplitude and Phase Dither.......................................... 38 Decimating Half-Band Filter and FIR filter................................ 39 Half-Band Filter Coefficients.................................................... 39 Half-Band Filter Features .......................................................... 39 Fixed-Coefficient FIR Filter...................................................... 39 Synchronization.......................................................................... 40 Combined Filter Performance.................................................. 40 Final NCO ................................................................................... 40 ADC Overrange and Gain Control.............................................. 41 Fast Detect Overview................................................................. 41 ADC Fast Magnitude................................................................. 41 ADC Overrange (OR)................................................................ 42 Gain Switching............................................................................ 42 Signal Monitor ................................................................................ 44 Peak Detector Mode................................................................... 44 RMS/MS Magnitude Mode....................................................... 44 Threshold Crossing Mode......................................................... 45 Additional Control Bits ............................................................. 45 DC Correction............................................................................ 45 Signal Monitor SPORT Output ................................................ 46 Channel/Chip Synchronization.................................................... 47 Serial Port Interface (SPI).............................................................. 48 Configuration Using the SPI..................................................... 48 Hardware Interface..................................................................... 48 Configuration Without the SPI ................................................ 49 SPI Accessible Features.............................................................. 49 Memory Map .................................................................................. 50 Reading the Memory Map Register Table............................... 50 Memory Map Register Table..................................................... 51 Memory Map Register Description ......................................... 55 Applications Information .............................................................. 59 Design Guidelines ...................................................................... 59 Evaluation Board ............................................................................ 61 Power Supplies............................................................................ 61 Input Signals................................................................................ 61 Output Signals ............................................................................ 61 Default Operation and Jumper Selection Settings................. 62 Alternative Clock Configurations............................................ 62 Alternative Analog Input Drive Configuration...................... 63 Schematics................................................................................... 64 |
类似零件编号 - AD6655_15 |
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类似说明 - AD6655_15 |
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