Motore di ricerca datesheet componenti elettronici |
|
AD7142 Scheda tecnica(PDF) 2 Page - Analog Devices |
|
AD7142 Scheda tecnica(HTML) 2 Page - Analog Devices |
2 / 70 page AD7142 Data Sheet Rev. B | Page 2 of 70 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 3 Specifications..................................................................................... 4 SPI Timing Specifications (AD7142)......................................... 6 I2C Timing Specifications (AD7142-1) ..................................... 7 Absolute Maximum Ratings............................................................ 8 ESD Caution.................................................................................. 8 Pin Configurations and Function Descriptions ........................... 9 Typical Performance Characteristics ........................................... 10 Theory of Operation ...................................................................... 12 Capacitance Sensing Theory..................................................... 12 Operating Modes........................................................................ 13 Capacitance Sensor Input Configuration.................................... 14 CIN Input Multiplexer Setup.................................................... 14 Capacitance-to-Digital Converter................................................ 15 Oversampling the CDC Output ............................................... 15 Capacitance Sensor Offset Control.......................................... 15 Conversion Sequencer ............................................................... 15 CDC Conversion Sequence Time ............................................ 16 CDC Conversion Results........................................................... 17 Noncontact Proximity Detection ................................................. 18 Recalibration ............................................................................... 18 Proximity Sensitivity.................................................................. 18 FF_SKIP_CNT............................................................................ 21 Environmental Calibration ........................................................... 23 Capacitance Sensor Behavior Without Calibration............... 23 Capacitance Sensor Behavior with Calibration...................... 23 Slow FIFO.................................................................................... 24 SLOW_FILTER_UPDATE_LVL.............................................. 24 Adaptive Threshold and Sensitivity ............................................. 25 Interrupt Output............................................................................. 27 CDC Conversion Complete Interrupt..................................... 27 Sensor Touch Interrupt.............................................................. 27 GPIO INT Output Control ....................................................... 29 Outputs ............................................................................................ 31 Excitation Source........................................................................ 31 CSHIELD Output ............................................................................. 31 GPIO ............................................................................................ 31 Using the GPIO to Turn On/Off an LED................................ 31 Serial Interface ................................................................................ 32 SPI Interface................................................................................ 32 I2C Compatible Interface........................................................... 34 VDRIVE Input ................................................................................. 36 PCB Design Guidelines ................................................................. 37 Capacitive Sensor Board Mechanical Specifications............. 37 Chip Scale Packages ................................................................... 37 Power-Up Sequence ....................................................................... 38 Typical Application Circuits ......................................................... 39 Register Map ................................................................................... 40 Detailed Register Descriptions ..................................................... 41 Bank 1 Registers ......................................................................... 41 Bank 2 Registers ......................................................................... 51 Bank 3 Registers ......................................................................... 58 Outline Dimensions....................................................................... 70 Ordering Guide .......................................................................... 70 |
Codice articolo simile - AD7142_17 |
|
Descrizione simile - AD7142_17 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore 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 |