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FDC1004DSCJ View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
FDC1004DSCJ 4-Channel Capacitance-to-Digital Converter for Capacitive Sensing Solutions TI
Texas Instruments TI
FDC1004DSCJ Datasheet PDF : 33 Pages
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FDC1004
SNOSCY5B – AUGUST 2014 – REVISED APRIL 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Typical Application ................................................ 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information ................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 I2C Interface Voltage Level ...................................... 6
7.7 I2C Interface Timing ................................................. 7
7.8 Typical Characteristics .............................................. 8
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 11
8.5 Programming........................................................... 13
8.6 Register Maps ........................................................ 16
9 Applications and Implementation ...................... 20
9.1 Application Information............................................ 20
9.2 Typical Application ................................................. 21
9.3 Do's and Don'ts ...................................................... 23
9.4 Initialization Set Up ................................................ 23
10 Power Supply Recommendations ..................... 23
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 23
12 Device and Documentation Support ................. 24
12.1 Documentation Support ....................................... 24
12.2 Trademarks ........................................................... 24
12.3 Electrostatic Discharge Caution ............................ 24
12.4 Glossary ................................................................ 24
13 Mechanical, Packaging, and Orderable
Information ........................................................... 24
5 Revision History
Changes from Revision A (October 2014) to Revision B
Page
• Changed max temp range from 85C to 125C throughout ..................................................................................................... 1
• Added VSSOP package type ................................................................................................................................................. 1
• Added note to Electrical Characteristics table ....................................................................................................................... 2
• Deleted WSON DAP explicit assignment to GND in diagram ................................................................................................ 4
• Added VSSOP package diagram .......................................................................................................................................... 4
• Changed table from Handling Ratings to ESD Ratings and moved Storage Temp to Absolute Maximum Ratings ............. 5
• Added JA thermal resistance for VSSOP package ............................................................................................................... 5
• Added JC thermal resistance for WSON package ................................................................................................................ 5
• Added JC thermal resistance for VSSOP package ............................................................................................................... 5
• Added JC thermal resistance for WSON package ................................................................................................................ 5
• Added JB thermal resistance for VSSOP package ............................................................................................................... 5
• Added note to Electrical Characteristics table ....................................................................................................................... 6
• Added note to Electrical Characteristics limits ...................................................................................................................... 6
• Changed TcCOFF to "46" from "30" ......................................................................................................................................... 6
• Changed GERR to "0.2" from "0.07" ........................................................................................................................................ 6
• Changed gain error unit to "%" from "% of full scale"............................................................................................................. 6
• Changed tcG to "-37.5" from "2.1" ......................................................................................................................................... 6
• Changed tcG unit to "ppm/°C" from "ppm of full scale/°C"..................................................................................................... 6
• Added testing for PSRR condition .......................................................................................................................................... 6
• Changed PSRR to "13.6" from "11" ...................................................................................................................................... 6
• Changed FRCAPDACto "96.9" from "96.875" ............................................................................................................................ 6
• Deleted CAPDAC resolution from EC table ........................................................................................................................... 6
• Changed TcCOFFCAPDAC to "30" from "1" .............................................................................................................................. 6
• Changed TcCOFFCAPDACto "fF" from "ppm of FS/°C" ............................................................................................................ 6
• Changed DRV value of 400pF from typ and moved to max limit ........................................................................................... 6
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