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