 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
AD7142 数据表(PDF) 2 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
AD7142 数据表(HTML) 2 Page - Analog Devices |
|
|
2 / 68 page  AD7142 Rev. 0 | Page 2 of 68 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 SPI Timing Specifications (AD7142)......................................... 5 I2C Timing Specifications (AD7142-1) ..................................... 6 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ............................................. 9 Theory of Operation ...................................................................... 11 Capacitance Sensing Theory..................................................... 11 Operating Modes........................................................................ 12 Capacitance Sensor Input Configuration.................................... 13 CIN Input Multiplexer Setup .................................................... 13 Capacitiance-to-Digital Converter............................................... 14 Oversampling the CDC Output ............................................... 14 Capacitance Sensor Offset Control.......................................... 14 Conversion Sequencer ............................................................... 14 CDC Conversion Sequence Time ............................................ 15 CDC Conversion Results........................................................... 16 Noncontact Proximity Detection ................................................. 17 Recalibration ............................................................................... 17 Proximity Sensitivity .................................................................. 17 FIFO Control .............................................................................. 20 Environmental Calibration ........................................................... 22 Capacitance Sensor Behavior Without Calibration............... 22 Capacitance Sensor Behavior with Calibration...................... 23 Adaptive Threshold and Sensitivity ............................................. 24 Interrupt Output............................................................................. 25 CDC Conversion Complete Interrupt..................................... 25 Sensor Touch Interrupt.............................................................. 25 GPIO INT Output Control ....................................................... 27 Outputs ............................................................................................ 29 Excitation Source........................................................................ 29 CSHIELD Output ............................................................................. 29 GPIO ............................................................................................ 29 Using the GPIO to turn on/off an LED................................... 29 Serial Interface ................................................................................ 30 SPI Interface ................................................................................ 30 I2C Compatible Interface........................................................... 32 VDRIVE Input ................................................................................. 34 PCB Design Guidelines ................................................................. 35 Capacitive Sensor Board Mechanical Specifications ............. 35 Chip Scale Packages ................................................................... 35 Power-Up Sequence ....................................................................... 36 Typical Application Circuits ......................................................... 37 Register Map ................................................................................... 38 Detailed Register Descriptions ..................................................... 39 Bank 1 Registers ......................................................................... 39 Bank 2 Registers ......................................................................... 48 Bank 3 Registers ......................................................................... 54 Outline Dimensions ....................................................................... 66 Ordering Guide .......................................................................... 66 REVISION HISTORY 6/06—Revision 0: Initial Version |
类似零件编号 - AD7142 |
|
类似说明 - AD7142 |
|
|
链接网址 |
| 隐私政策 |
| ALLDATASHEETCN.COM |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
