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AD7151BRMZ Datasheet(PDF) 3 Page - Analog Devices |
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AD7151BRMZ Datasheet(HTML) 3 Page - Analog Devices |
3 / 29 page AD7151 Rev. 0 | Page 2 of 28 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ............................................. 7 Architecture and Main Features ................................................... 10 Capacitance-to-Digital Converter............................................ 10 CAPDAC ..................................................................................... 10 Comparator and Threshold Modes.......................................... 11 Adaptive Threshold.................................................................... 11 Data Average ............................................................................... 11 Sensitivity..................................................................................... 12 Hysteresis..................................................................................... 12 Timeout........................................................................................ 12 AutoCAPDAC Adjustment ....................................................... 13 Power-Down Timer ................................................................... 13 Power Supply Monitor ............................................................... 13 Register Descriptions ..................................................................... 14 Status Register ............................................................................. 15 Data Register ............................................................................... 16 Average Register ......................................................................... 16 Fixed Threshold Register........................................................... 16 Sensitivity Register ..................................................................... 16 Timeout Register ........................................................................ 17 Setup Register ............................................................................. 18 Configuration Register .............................................................. 19 Power-Down Timer Register .................................................... 20 CAPDAC Register ...................................................................... 20 Serial Number Register.............................................................. 20 Chip ID Register......................................................................... 20 Serial Interface ................................................................................ 21 Read Operation........................................................................... 21 Write Operation.......................................................................... 21 AD7151 Reset ............................................................................. 22 General Call ................................................................................ 22 Hardware Design Considerations ................................................ 23 Overview ..................................................................................... 23 Parasitic Capacitance to Ground.............................................. 23 Parasitic Resistance to Ground................................................. 23 Parasitic Parallel Resistance ...................................................... 23 Parasitic Serial Resistance ......................................................... 24 Input Overvoltage Protection ................................................... 24 Input EMC Protection ............................................................... 24 Power Supply Decoupling and Filtering.................................. 24 Application Examples ................................................................ 25 Outline Dimensions ....................................................................... 26 Ordering Guide .......................................................................... 26 REVISION HISTORY 11/07—Revision 0: Initial Version |
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