Details, datasheet, quote on part number: LTC2986CLXPBF
PartLTC2986CLXPBF
Category
TitleIC SENSOR TEMP MEASUREMNT 48LQFP
Description

LTC’s LTC2986 is a 10-channel temperature monitoring system that can measure a wide variety of temperature sensors and digitally output the results in °C or °F with 0.1°C accuracy and 0.001°C resolution. The LTC2986 can measure the temperature of virtually all standard (Type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold junction temperatures, and linearize the results. The device can also measure temperature with standard 2-, 3- or 4-wire RTDs, thermistors, and diodes. The LTC2986 includes excitation current sources and fault detection circuitry appropriate for each type of temperature sensor. These devices are 10-channel software and pin compatible versions of the 20-channel LTC2983/LTC2984. Additional features include special modes that enable easy protection in universal multi-sensor applications, custom tables for generic ADC readings, and direct temperature readout from active analog temperature sensors. The LTC2986-1 is the EEPROM version of the LTC2986. The LTC2986 is ideal for thermocouple, RTD, and thermistor measurements applications.



CompanyLinear Technology Corporation
DatasheetDownload LTC2986CLXPBF datasheet
  
LTC2986CLXPBF photo

Others parts numbering
LTC2986CLX-1PBF
LTC2986ILXPBF
LTC2986ILX-1PBF
LTC2986HLXPBF
LTC2986HLX-1PBF
DC2608A: EVAL BOARD FOR LTC2986-1
DC2608A-KIT: STARTER KIT LTC2986-1 W/LINDUINO
DC2531A-KIT: STARTER KIT FOR LTC2986, LTC2986
DC2507A: DEMO BRD FOR LTC2986 LTC2986-1

 

Features, Applications
FEATURES

LTC2986/LTC2986-1 Multi-Sensor High Accuracy Digital Temperature Measurement System with EEPROM DESCRIPTION

The LTC 2986 measures a wide variety of temperature sensors and digitally outputs the result, F , with 0.1C accuracy and 0.001C resolution. The LTC2986 can measure the temperature of virtually all standard (Type T) or custom thermocouples, automatically compensate for cold junction temperatures and linearize the results. The device can also measure temperature with standard or 4-wire RTDs, thermistors, and diodes. The LTC2986 includes excitation current sources and fault detection circuitry appropriate for each type of temperature sensor.

Directly Digitizes or 4-Wire RTDs, Thermocouples, Thermistors, and Diodes nn On-Chip EEPROM (LTC2986-1) Stores Channel Configuration Data and Custom Coefficients nn Single to 5.25V Supply nn 10 Flexible Inputs Allow Interchanging Sensors nn Automatic Thermocouple Cold Junction Compensation nn Built-In Standard and User-Programmable Coefficients for Thermocouples, RTDs and Thermistors nn Measures Negative Thermocouple Voltages nn Automatic Burn Out, Short-Circuit and Fault Detection nn Buffered Inputs Allow External Protection nn Simultaneous 50Hz/60Hz Rejection nn Includes 15ppm/C (Max) Reference nn Includes Special Protection Modes

APPLICATIONS

Direct Thermocouple Measurements Direct RTD Measurements nn Direct Thermistor Measurements nn Custom Sensor Applications

The LTC2986/LTC2986-1 are 10-channel software and pincompatible versions of the 20-channel LTC2983/LTC2984. Additional features include special modes that enable easy protection in universal multi-sensor applications, custom tables for generic ADC readings, and direct temperature readout from active analog temperature sensors. The LTC2986-1 is the EEPROM version of the LTC2986.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patents Pending

Thermocouple Measurement with Automatic Cold Junction Compensation

Features............................................................................................................................. 1 Applications........................................................................................................................ 1 Typical Application................................................................................................................ 1 Description......................................................................................................................... 1 Absolute Maximum Ratings...................................................................................................... 3 Order Information.................................................................................................................. 3 Pin Configuration.................................................................................................................. 3 Complete System Electrical Characteristics................................................................................... 4 ADC Electrical Characteristics................................................................................................... 4 Reference Electrical Characteristics............................................................................................ 5 Digital Inputs and Digital Outputs............................................................................................... 5 LTC2986-1 EEPROM Characteristics............................................................................................ 6 Typical Performance Characteristics........................................................................................... 7 Pin Functions......................................................................................................................10 Block Diagram.....................................................................................................................11 Test Circuits.......................................................................................................................12 Timing Diagram...................................................................................................................12 Overview...........................................................................................................................13 Applications Information........................................................................................................17 EEPROM Overview (LTC2986-1)........................................................................................................................... 23 EEPROM Read/Write Validation............................................................................................................................. 23 EEPROM Write Operation...................................................................................................................................... 23 EEPROM Read Operation (LTC2986-1).................................................................................................................. 24 Thermocouple Measurements............................................................................................................................... 25 Diode Measurements............................................................................................................................................. 28 RTD Measurements............................................................................................................................................... 32 Thermistor Measurements..................................................................................................................................... 51 Global Configuration Register................................................................................................................................ 60 Input Overvoltage Protection Overview.............................................................................................................. 60 Active Analog Temperature Sensors...................................................................................................................... 66 Direct ADC Measurements..................................................................................................................................... 70 2- and 3-Cycle Conversion Modes......................................................................................................................... 75 Running Conversions Consecutively on Multiple Channels.................................................................................... 75 Entering/Exiting Sleep Mode.................................................................................................................................. 76 MUX Configuration Delay....................................................................................................................................... 76 Reference Considerations...................................................................................................................................... 76 Custom Thermocouples..........................................................................................................77 Custom RTDs......................................................................................................................80 Custom Thermistors..............................................................................................................83 Package Description.............................................................................................................88 Revision History..................................................................................................................89 Typical Application...............................................................................................................90 Related Parts......................................................................................................................90

PART MARKING* LTC2986LX LTC2986LX-1 PACKAGE DESCRIPTION 7mm) LQFP 7mm) LQFP 7mm) LQFP 7mm) LQFP 7mm) LQFP 7mm) LQFP TEMPERATURE RANGE to 125C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/

Supply Voltage (VDD).................................... to 6V Analog Input Pins to CH10, COM).................................. 0.3V to (VDD + 0.3V) Input Current to CH10, COM)....................... 15mA Digital Inputs (CS, SDI, SCK, RESET)................................. 0.3V to (VDD + 0.3V) Digital Outputs (SDO, INTERRUPT). 0.3V to (VDD + 0.3V) VREFP......................................................... Q2, Q3, LDO, VREFOUT, VREF_BYP (Note 18) Reference Short-Circuit Duration...................... Indefinite Operating Temperature Range to 125C


 

Some Part number from the same manufacture Linear Technology Corporation
LTC2986CLX-1PBF

LTC’s LTC2986 is a 10-channel temperature monitoring system that can measure a wide variety of temperature sensors and digitally output the results in °C or °F with 0.1°C accuracy

LTC2986ILXPBF
LTC2986ILX-1PBF
LTC2986HLXPBF
LTC2986HLX-1PBF
DC2608A
DC2608A-KIT
DC2531A-KIT
DC2507A
 
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