LTC2983
2
2983fc
For more information www.linear.com/LTC2983
TABLE OF CONTENTS
Features ............................................................................................................................ 1
Applications
....................................................................................................................... 1
Typical Application
............................................................................................................... 1
Description......................................................................................................................... 1
Absolute Maximum Ratings
..................................................................................................... 3
Order Information
................................................................................................................. 3
Complete System Electrical Characteristics
.................................................................................. 3
Pin Configuration
................................................................................................................. 3
ADC Electrical Characteristics
.................................................................................................. 4
Reference Electrical Characteristics
........................................................................................... 4
Digital Inputs and Digital Outputs
.............................................................................................. 5
Typical Performance Characteristics
.......................................................................................... 6
Pin Functions
...................................................................................................................... 9
Block Diagram
....................................................................................................................10
Test Circuits
......................................................................................................................11
Timing Diagram
.................................................................................................................. 11
Overview
..........................................................................................................................12
Applications Information
.......................................................................................................16
Thermocouple Measurements
.............................................................................................................................. 21
Diode Measurements
............................................................................................................................................ 24
RTD Measurements
.............................................................................................................................................. 28
Thermistor Measurements
.................................................................................................................................... 43
Direct ADC Measurements
.................................................................................................................................... 55
Supplemental Information
......................................................................................................55
Fault Protection and Anti-Aliasing
......................................................................................................................... 57
2- and 3-Cycle Conversion Modes
........................................................................................................................ 57
Running Conversions Consecutively on Multiple Channels
................................................................................... 58
MUX Configuration Delay
...................................................................................................................................... 58
Global Configuration Register
............................................................................................................................... 59
Custom Thermocouples
......................................................................................................... 59
Custom RTDs
.....................................................................................................................62
Custom Thermistors
.............................................................................................................65
Package Description
............................................................................................................70
Revision History
.................................................................................................................71
Typical Application
..............................................................................................................72
Related Parts
.....................................................................................................................72
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