参考设计
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TIPD164 Analog Input Module for Industrial Outputs and Temperature Sensors Reference Design | TI.com
TIPD164: This TI Designs, Precision Verified design implements an analog input module for industrial voltages, currents, and temperature sensors. For industrial outputs, the possible input ranges include: 4-20 mA, 0-20 mA, +/-25 mA, 0-5 V, 0-10 V, +/-5 V, +/-10 V. The design includes conditioning and level-shift circuitry which converts the large industrial outputs into a proper input range for a +5V delta-sigma ADC. The ADC has features to directly acquire information from the RTD and thermocouple sensors over their full temperature range.
TIPD120 3-wire RTD Acquisition System Accurately Measures Temperature From -200°C - 850°C | TI.com
TIPD120: This TI Precision Verified Design provides the theory, component selection, simulation, complete PCB schematic & layout, bill of materials, and measured performance of a single-supply, 3-wire RTD acquisition system that accurately measures temperature from -200°C - 850°C. The voltage input and reference voltage are placed in a ratiometric configuration in order to reduce the errors from noise and drift and improve overall system accuracy. The ADS1247 simplifies the front-end solution by incoorporating the required current sources, programmable gain amplifier, and digitally-controlled multiplexer onto one chip. A "chopping" technique is used to minimize the effects of mismatch between the two current sources. The TPS7A4901 adjustable-output, high-PSRR LDO is suggested as a cleaner power alternative over the existing USB supply to further improve system accuracy.
3-wire RTD Acquisition System Accurately Measures Temperature From -200°C - 850°C
TIPD120: This TI Precision Verified Design provides the theory, component selection, simulation, complete PCB schematic & layout, bill of materials, and measured performance of a single-supply, 3-wire RTD acquisition system that accurately measures temperature from -200°C - 850°C. The voltage input and reference voltage are placed in a ratiometric configuration in order to reduce the errors from noise and drift and improve overall system accuracy. The ADS1247 simplifies the front-end solution by incoorporating the required current sources, programmable gain amplifier, and digitally-controlled multiplexer onto one chip. A "chopping" technique is used to minimize the effects of mismatch between the two current sources. The TPS7A4901 adjustable-output, high-PSRR LDO is suggested as a cleaner power alternative over the existing USB supply to further improve system accuracy.
Analog Front End (AFE) for Sensing Temperature in Smart Grid Applications Using RTD Reference Design
TIDA-00110: This reference design enables up to 4 Resistor Temperature Detectors (RTD) to be connected through one ADC in manner such that the solution is both compact and modular. Communication from the ADC to the processor is though an SPI interface. If 8 RTDs are required for an application, simply connect up one more of these modules. This solution is flexible to where it can handle 2 wire, 3 wire or 4 wire type RTDs.
Analog Input Module for Industrial Outputs and Temperature Sensors Reference Design
TIPD164: This TI Designs, Precision Verified design implements an analog input module for industrial voltages, currents, and temperature sensors. For industrial outputs, the possible input ranges include: 4-20 mA, 0-20 mA, +/-25 mA, 0-5 V, 0-10 V, +/-5 V, +/-10 V. The design includes conditioning and level-shift circuitry which converts the large industrial outputs into a proper input range for a +5V delta-sigma ADC. The ADC has features to directly acquire information from the RTD and thermocouple sensors over their full temperature range.
TIDA-00463 Fluxgate Based Displacement Sensor Reference Design | TI.com
TIDA-00463: The TIDA-00463 showcases a displacement sensor for linear distance measurements in a BoosterPack form factor for TI LaunchPad. The design is suitable for any application where a distance measurement, even through non-magnetic materials, is needed and non-contact, wear-free measurements are required. Through the use of magnetic fluxgate technology, this design is able to cover a wide measurement distance while achieving high resolution and accuracy.
