TIDM-01000
4- to 20-mA Loop-Powered RTD Temperature Transmitter Reference Design With MSP430 Smart Analog Combo
TIDM-01000
Overview
This TI reference design provides a low-component count, low-cost solution for 4- to 20-mA loop-powered, resistance-temperature detector (RTD), temperature transmitter. The design takes advantage of the on-chip Smart Analog Combo module in the MSP430FR2355 MCU to control the loop current, so the standalone DAC is no longer required. This design achieves a 12-bit output resolution with an output current resolution of 6 µA. The design incorporates reverse-polarity protection as well as IEC61000-4-2 and IEC61000-4-4 protection on the loop-power input.
Features
- Sensor Input Compatible with 2-, 3- or 4-Wire Resistance Temperature Detector (RTD) Probes
- Temperature range for RTD of –200°C to 850°C
- Maximum Measured Error: <1°C
- IEC61000-4-2: ESD: Air Discharge: ±8 kV Class A
- Small Form Factor (L × W): 60mm × 8mm
- Operating Temperature Range -40°C to 105°C
Industrial
- Capacitive Level Transmitter
- Capacitive pressure transmitter
- Concentration process analytics
- Contactless temperature transmitter
- Coriolis Flow Transmitter
- Differential Pressure Flow Transmitter
- Electromagnetic (MID) flow transmitter
- Force process analytics
- Gas chemical cell process analytics
- Gas optical NIR spectrometer process analytics
- Humidity process analytics
- Hydrometric Pressure Level Transmitter
- Impeller / Turbine Flow Transmitter
- Inductive & capacitive position sensor
- LVDT Position Sensor
- LVDT pressure transmitter
- Magnetic Proximity Sensor
- Mass Spectrometer Process Analytics
- Optical Switch Proximity Sensor
- Optical ToF continuous wave position sensor
- Optical ToF pulse position sensor
- RTD temperature transmitter
- Radar / microwave level transmitter
- Resistive pressure transmitter
- Silicon pressure transmitter
- Silicon temperature transmitter
- Thermal Mass Flow Transmitter
- Thermocouple with CJC temperature transmitter
- Ultrasonic flow transmitter
- Ultrasonic level transmitter
- Ultrasonic position sensor
- Vortex flow transmitter
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUE64.PDF (11116 K)
Reference design overview and verified performance test data
TIDRWE8.PDF (193 K)
Detailed schematic diagram for design layout and components
TIDRWE9.PDF (44 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRWF0.PDF (107 K)
Detailed overview of design layout for component placement
TIDRWF2.ZIP (490 K)
Files used for 3D models or 2D drawings of IC components
TIDCEP4.ZIP (323 K)
Design file that contains information on physical board layer of design PCB
TIDRWF1.PDF (506 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430FR2353 — 24 MHz 105 C integrated analog microcontroller with 16 KB FRAM, Op-Amps/PGAs, 12-bit DACs, 12-bit AD
Data sheetMSP430 microcontrollers
MSP430FR2355 — 24-MHz 105-C integrated analog microcontroller with 32-KB FRAM, Op-Amps/PGAs, 12-bit DACs, 12-bit AD
Data sheetLinear & low-dropout (LDO) regulators
TPS7A16 — 100-mA, 60-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with power good and enable
Data sheetPrecision ADCs (<=10MSPS)
ADS1120 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & SPI interface
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | Design guide | 4- to 20-mA Loop-Powered RTD Temperature Transmitter Reference Design | May 21, 2018 |
| Technical article | Get more signal chain from your MCU in factory automation applications | Jun. 06, 2018 |
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