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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AD6655ABCPZRL7-1501 Datenblatt(PDF) 2 Page - Analog Devices |
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AD6655ABCPZRL7-1501 Datenblatt(HTML) 2 Page - Analog Devices |
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2 / 88 page  AD6655 Rev. A | Page 2 of 88 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—AD6655BCPZ-80/ AD6655BCPZ-105......................................................................... 5 ADC DC Specifications—AD6655BCPZ-125/ AD6655BCPZ-150......................................................................... 6 ADC AC Specifications—AD6655BCPZ-80/ AD6655BCPZ-105......................................................................... 7 ADC AC Specifications—AD6655BCPZ-125/ AD6655BCPZ-150......................................................................... 8 Digital Specifications—AD6655BCPZ-80/AD6655BCPZ-105.. 9 Digital Specifications—AD6655BCPZ-125/ AD6655BCPZ-150....................................................................... 11 Switching Specifications—AD6655BCPZ-80/ AD6655BCPZ-105....................................................................... 13 Switching Specifications—AD6655BCPZ-125/ AD6655BCPZ-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 |
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