Datasheet LTC2984 (Analog Devices) - 7

LTC2984
TYPICAL PERFORMANCE CHARACTERISTICS Type J Thermocouple Error and Type K Thermocouple Error and Type N Thermocouple Error and RMS Noise vs Temperature RMS Noise vs Temperature RMS Noise vs Temperature
1.0 1.0 1.0 0.8 0.8 0.8 0.6 0.6 0.6 0.4 0.4 0.4 0.2 0.2 0.2 0 0 0 –0.2 –0.2 –0.2 –0.4 –0.4 –0.4 ERROR/RMS NOISE (°C) ERROR/RMS NOISE (°C) ERROR/RMS NOISE (°C) –0.6 –0.6 –0.6 –0.8 RMS NOISE –0.8 RMS NOISE –0.8 RMS NOISE ERROR ERROR ERROR –1.0 –1.0 –1.0 –400 0 400 800 1200 1600 –400 0 400 800 1200 1600 –400 0 400 800 1200 1600 THERMOCOUPLE TEMPERATURE (°C) THERMOCOUPLE TEMPERATURE (°C) THERMOCOUPLE TEMPERATURE (°C) 2984 G01 2984 G02 2984 G03
Type R Thermocouple Error and Type S Thermocouple Error and Type T Thermocouple Error and RMS Noise vs Temperature RMS Noise vs Temperature RMS Noise vs Temperature
1.0 1.0 1.0 0.8 0.8 0.8 0.6 0.6 0.6 0.4 0.4 0.4 0.2 0.2 0.2 T 0 0 0 –0.2 –0.2 –0.2 –0.4 –0.4 –0.4 ERROR/RMS NOISE (°C) ERROR/RMS NOISE (°C) ERROR/RMS NOISE (°C) –0.6 –0.6 –0.6 –0.8 RMS NOISE –0.8 RMS NOISE –0.8 RMS NOISE ERROR ERROR ERROR –1.0 –1.0 –1.0 –400 0 400 800 1200 1600 2000 –400 0 400 800 1200 1600 2000 –400 –200 0 200 400 600 THERMOCOUPLE TEMPERATURE (°C) THERMOCOUPLE TEMPERATURE (°C) THERMOCOUPLE TEMPERATURE (°C) 2984 G04 2984 G05 2984 G06
Type E Thermocouple Error and Type B Thermocouple Error and RTD PT-1000 Error and RMS RMS Noise vs Temperature RMS Noise vs Temperature Noise vs Temperature
1.0 1.0 1.0 0.8 0.8 0.8 0.6 0.6 0.6 0.4 0.4 0.4 0.2 0.2 0.2 0 0 0 –0.2 –0.2 –0.2 –0.4 –0.4 –0.4 ERROR/RMS NOISE (°C) ERROR/RMS NOISE (°C) ERROR/RMS NOISE (°C) –0.6 –0.6 –0.6 –0.8 RMS NOISE –0.8 RMS NOISE –0.8 RMS NOISE ERROR ERROR ERROR –1.0 –1.0 –1.0 –400 0 400 800 1200 400 800 1200 1600 2000 –400 0 400 800 THERMOCOUPLE TEMPERATURE (°C) THERMOCOUPLE TEMPERATURE (°C) RTD TEMPERATURE (°C) 2984 G07 2984 G08 2984 G09 2984fb For more information www.linear.com/LTC2984 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Complete System Electrical Characteristics ADC Electrical Characteristics Reference Electrical Characteristics Digital Inputs and Digital Outputs EEPROM Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagram Overview Applications Information EEPROM Overview Eeprom Read/Write Validation EEPROM Write Operation EEPROM Read Operation Thermocouple Measurements Diode Measurements RTD Measurements Thermistor Measurements Supplemental Information Direct ADC Measurements Fault Protection and Anti-Aliasing 2- and 3-Cycle Conversion Modes Running Conversions Consecutively on Multiple Channels Entering/Exiting Sleep Mode MUX Configuration Delay Global Configuration Register Reference Considerations Custom Thermocouples Custom RTDs Custom Thermistors Package Description Revision History Typical Application Related Parts