AD7143ACPZ Analog Devices Inc, AD7143ACPZ Datasheet - Page 2
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AD7143ACPZ
Manufacturer Part Number
AD7143ACPZ
Description
IC, CDC, 16BIT, SMD, LFCSP-16, 7143
Manufacturer
Analog Devices Inc
Datasheet
1.AD7143ACPZ.pdf
(56 pages)
Specifications of AD7143ACPZ
Supply Voltage Range
2.6V To 3.6V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
LFCSP
No. Of Pins
16
Svhc
No SVHC (18-Jun-2010)
Package / Case
LFCSP
Base Number
7143
Ic Function
Programmable Controller For Capacitance Touch Sensors
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD7143ACPZ-1
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
AD7143ACPZ-1500RL7
Manufacturer:
NSC
Quantity:
654
Part Number:
AD7143ACPZ-1500RL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
AD7143
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configurations and Function Descriptions ........................... 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 11
Capacitance Sensor Input Configuration.................................... 13
Capacitiance-to-Digital Converter............................................... 14
Noncontact Proximity Detection ................................................. 17
REVISION HISTORY
1/07—Revision 0: Initial Version
I
ESD Caution.................................................................................. 6
Capacitance Sensing Theory..................................................... 11
Operating Modes........................................................................ 12
CIN Input Multiplexer Setup .................................................... 13
Oversampling the CDC Output ............................................... 14
Capacitance Sensor Offset Control.......................................... 14
Conversion Sequencer ............................................................... 14
CDC Conversion Sequence Time ............................................ 15
CDC Conversion Results........................................................... 16
Recalibration ............................................................................... 17
2
C Timing Specifications............................................................ 5
Rev. 0 | Page 2 of 56
Environmental Calibration ........................................................... 22
Adaptive Threshold and Sensitivity ............................................. 25
Interrupt Output............................................................................. 26
Serial Interface ................................................................................ 28
PCB Design Guidelines ................................................................. 31
Power-Up Sequence ....................................................................... 32
Typical Application Circuits ......................................................... 33
Register Map ................................................................................... 34
Detailed Register Descriptions ..................................................... 35
Outline Dimensions ....................................................................... 55
Proximity Sensitivity.................................................................. 17
Slow FIFO.................................................................................... 19
SLOW_FILTER_UPDATE_LVL .............................................. 19
Capacitance Sensor Behavior without Calibration................ 22
Capacitance Sensor Behavior with Calibration...................... 23
CDC Conversion Complete Interrupt..................................... 26
Sensor Touch Interrupt.............................................................. 26
I
Capacitive Sensor Board Mechanical Specifications ............. 31
Chip Scale Packages ................................................................... 31
Bank 1 Registers ......................................................................... 35
Bank 2 Registers ......................................................................... 43
Bank 3 Registers ......................................................................... 47
Ordering Guide .......................................................................... 55
2
C Compatible Interface........................................................... 28