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AD7761BSTZ Datasheet(PDF) 2 Page - Analog Devices |
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AD7761BSTZ Datasheet(HTML) 2 Page - Analog Devices |
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2 / 69 page  AD7761 Data Sheet Rev. 0 | Page 2 of 69 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .......................................................... 1 Revision History ............................................................................... 2 General Description ......................................................................... 3 Specifications..................................................................................... 4 Timing Specifications .................................................................. 9 1.8 V IOVDD Timing Specifications....................................... 10 Absolute Maximum Ratings.......................................................... 14 Thermal Resistance .................................................................... 14 ESD Caution................................................................................ 14 Pin Configuration and Function Descriptions........................... 15 Typical Performance Characteristics ........................................... 19 Terminology .................................................................................... 25 Theory of Operation ...................................................................... 26 Clocking, Sampling Tree, and Power Scaling ............................. 26 Noise Performance and Resolution.......................................... 27 Applications Information .............................................................. 29 Power Supplies ............................................................................ 30 Device Configuration ................................................................ 31 Pin Control Mode....................................................................... 31 SPI Control.................................................................................. 34 SPI Control Functionality ......................................................... 35 SPI Control Mode Extra Diagnostic Features ........................ 37 Circuit Information ........................................................................ 38 Core Signal Chain....................................................................... 38 Analog Inputs.............................................................................. 39 VCM............................................................................................. 40 Reference Input........................................................................... 40 Clock Selection ........................................................................... 40 Digital Filtering........................................................................... 40 Decimation Rate Control .......................................................... 42 Antialiasing ................................................................................. 42 Calibration................................................................................... 43 Data Interface.................................................................................. 45 Setting the Format of Data Output .......................................... 45 ADC Conversion Output: Header and Data .......................... 46 Functionality ................................................................................... 54 GPIO Functionality.................................................................... 54 Register Map Details (SPI Control) ............................................. 55 Register Map ............................................................................... 55 Channel Standby Register ......................................................... 57 Channel Mode A Register ......................................................... 57 Channel Mode B Register ......................................................... 58 Channel Mode Select Register.................................................. 58 Power Mode Select Register...................................................... 59 General Device Configuration Register .................................. 59 Data Control: Soft Reset, Sync, and Single-Shot Control Register ........................................................................................ 60 Interface Configuration Register.............................................. 61 Digital Filter RAM Built in Self Test (BIST) Register............ 61 Status Register............................................................................. 62 Revision Identification Register ............................................... 62 GPIO Control Register .............................................................. 62 GPIO Write Data Register......................................................... 63 GPIO Read Data Register.......................................................... 63 Analog Input Precharge Buffer Enable Register Channel 0 to Channel 3 .................................................................................... 64 Analog Input Precharge Buffer Enable Register Channel 4 to Channel 7 .................................................................................... 64 Positive Reference Precharge Buffer Enable Register............ 65 Negative Reference Precharge Buffer Enable Register .......... 65 Offset Registers........................................................................... 65 Gain Registers ............................................................................. 66 Sync Phase Offset Registers ...................................................... 66 ADC Diagnostic Receive Select Register ................................ 66 ADC Diagnostic Control Register ........................................... 67 Modulator Delay Control Register........................................... 68 Chopping Control Register....................................................... 68 Outline Dimensions ....................................................................... 69 Ordering Guide .......................................................................... 69 REVISION HISTORY 4/16—Revision 0: Initial Version |
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