RTD to Voltage Reference Design Using Instrumentation Amplifier and Current Reference
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Key Document
Description
This reference design translates resistance temperature detectors (RTD) resistance to a voltage level convenient for an ADC input. A precision current reference provides excitation and an instrumentation amplifier scales the signal. The design also uses a three wire RTD configuration to minimize errors due to wiring resistance.
Features
- Converts RTD resistance to voltage
- 0 to 5V output across temperature range
- Eliminates lead resistance error
- Adjustable set with discrete resistors
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Schematic/Block Diagram
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Test Data
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Bill of Materials (BOM)
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TI Devices (2)
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CAD/CAE symbols
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical Documents
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
User guides (1)
| Title | Abstract | Type | Size (KB) | Date |
| | | PDF | 1241 |
28 Apr 2015
|
Design files (2)
| | | PDF | 203 |
02 Jun 2015
|
| | | PDF | 24 |
02 Jun 2015
|
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