LTC2983 Просмотр технического описания (PDF) - Linear Technology

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LTC2983

Multi-Sensor High Accuracy Digital Temperature Measurement System

Linear Technology 

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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