IC-Hersteller Texas Instruments

IC-Hersteller (96)

Texas Instruments MSP430FR2355 | Demoboard TIDA-010019 REV

RTD replacement for cold junction compensation reference design in a temperature sensor

Details

TopologieSonstige Topologie
IC-RevisionE2

Beschreibung

The cold-junction compensation is essential in temperature sensing using thermocouples. Every metal junction of different materials gives the thermo voltage. In the termocouple itself, but also where the thermo couple wires connect to the board a voltage is generated. The junction from the wires to the board is the so called cold-junction. The absolute temperature at this point has to be measured correctly to compensate the voltage developed here. The process of this compensation is the cold-junctioncompensation. This reference design shows different implementations for cold-junction compensation.The standard approach, using an RTD, is compared to different analog sensors, and integrated digital sensors. The design of a low-power front end for the thermocouple is also shown. The resulting performance of the different solutions are compared to each other. To compare different solutions, three boards are built using a different approach for CJC.

Eigenschaften

  • Ultra-low power TC front end: < 200 μA.
  • RTD type performance with silicon temperature sensors.
  • 16-bit ADC for 0.05 °C resolution.
  • Comparing different CJC solutions.
  • TC temperature from -270 °C to 1200 °C.

Typische Anwendungen

  • Temperature transmitter / Temperature controller / Analog input module

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieAnwendungPCB/Kabel/PanelModularityWire SectionλDom typ.
(nm)
FarbeλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chiptechnologie50% typ.
(°)
CTol. CVR
(V (DC))
BauformBetriebstemperaturQ
(%)
DF
(%)
RISOKeramiktypL
(mm)
W
(mm)
Fl
(mm)
H
(mm)
Betätigungskraft (Value)
(g)
Elektrische Lebensdauer
(Cycles)
Actuator-FarbeDampfphasenprozessPinsReihenGenderTypIR
(A)
VerpackungFarbe Muster
691210910002SPEC
6 Dateien WR-TBL Series 2109 - 2.54 mm Horiz. Entry Rising Cage Clamp PCB Nein 30 to 18 (AWG) 0.2 to 0.75 (mm²) -40 °C up to +105 °C 5.48 2 Horizontal 6 Karton
885012005055SPEC
8 Dateien WCAP-CSGP MLCCs 50 V(DC)10 pF ±5% 50 0402 -55 °C up to +125 °C 60010 GΩ NP0 Klasse I 1 0.5 0.25 0.5 7" Tape & Reel
885012206020SPEC
8 Dateien WCAP-CSGP MLCCs 10 V(DC)100 nF ±10% 10 0603 -55 °C up to +125 °C 55 GΩ X7R Klasse II 1.6 0.8 0.4 0.8 7" Tape & Reel
885012106017SPEC
8 Dateien WCAP-CSGP MLCCs 16 V(DC)1 µF ±20% 16 0603 -55 °C up to +85 °C 100.1 GΩ X5R Klasse II 1.6 0.8 0.4 0.8 7" Tape & Reel
885012207026SPEC
8 Dateien WCAP-CSGP MLCCs 10 V(DC)10 µF ±10% 10 0805 -55 °C up to +125 °C 100.01 GΩ X7R Klasse II 2 1.25 0.5 1.25 7" Tape & Reel
434121025816SPEC
5 Dateien WS-TASV SMT Tact Switch 6.0x3.8 mm 12 -40 °C up to +85 °C100 MΩ 2.5 160 50000 Schwarz nicht spezifiziert 0.05 Tape and Reel
60900213421SPEC
3 Dateien WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point -40 °C up to +125 °C1000 MΩ 2.44 1 Jumper 3 Beutel Schwarz
61300411121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header -40 °C up to +105 °C1000 MΩ 10.16 4 Single Pin Header Gerade 3 Beutel
61300511121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header -40 °C up to +105 °C1000 MΩ 12.7 5 Single Pin Header Gerade 3 Beutel
61300611121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header -40 °C up to +105 °C1000 MΩ 15.24 6 Single Pin Header Gerade 3 Beutel
150040GS73240SPEC
6 Dateien WL-SMCC SMT Mono-color Chip LED Compact 525 Grün 515 800 3.2 InGaN 120 0402 -40 °C up to +85 °C 1 0.5 0.4 Tape and Reel
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieAnwendungPCB/Kabel/PanelModularityWire SectionλDom typ.
(nm)
FarbeλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chiptechnologie50% typ.
(°)
CTol. CVR
(V (DC))
BauformBetriebstemperaturQ
(%)
DF
(%)
RISOKeramiktypL
(mm)
W
(mm)
Fl
(mm)
H
(mm)
Betätigungskraft (Value)
(g)
Elektrische Lebensdauer
(Cycles)
Actuator-FarbeDampfphasenprozessPinsReihenGenderTypIR
(A)
VerpackungFarbe Muster