TIPD153: This TI CerTIfied Reference Design implements a isolated single-channel industrial voltage and current output module using the DAC8760 and ISO7641. The circuit features a digitally controlled voltage or current output that produces the standard outputs of 0-20mA, 0-24mA, 4-20mA, 0-5V, +/-5V, 0-10V and +/-10V outputs based on the internal register settings of the DAC8760. The design includes the required external protection circuitry needed to pass the IEC61000-4-2/3/4/6 tests and IEC61000-4 test results are included. The protection circuitry does not negatively affect the voltage or current output performance resulting in <0.1% total unadjusted error (TUE) for both outputs.
TIPD155: This TI CerTIfied Reference Design implements a two channel combined voltage and current analog output module. The two outputs are independent and can both source and sink voltage and current over the standard industrial output ranges. While the design has been characterized with outputs of ±10 V and ±24 mA, output ranges of 0-5 V, 0-10 V, ±5 V, ±10 V.4-20 mA, 0-20 mA, 0-24 mA, ±20 mA, ±24 mA are possible by adjusting external resistor values. The design includes the necessary external protection elements required to pass the IEC61000-4-2/3/4/5/6 tests along with the measured test data. The protection circuitry does not negatively affect the design and test results showed typical unadjusted errors were <0.1% of the full-scale range (FSR) and calibrated errors were less than 0.01% FSR.
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-00189: The Isolated Loop powered Thermocouple Transmitter reference design is a system solution providing precision K-type thermocouple measurements for 4 to 20-mA isolated current-loop applications. This design is intended as an evaluation module for users to fast prototype and develop end-products for process-control and factory-automation. Potential challenges with thermocouples as a temperature sensor include tiny voltage outputs, low sensitivity and nonlinearity; in addition, because in industrial environments ground potential differences higher than 100V are common, thermocouple and signal conditioning circuitry must be galvanically isolated. The design files include design considerations, block diagrams, schematics, Bill of Materials (BOM), layer plots, Altium files, Gerber Files, and MSP430 Firmware. Watch the TIDA-00349 Overview video, covering the same isolated power topology as used in the TIDA-00189 NOW