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Cost and Space Optimized, Channel Isolated(Reinforced) AC/DC Voltage, Current DAQ Reference Design
Cost and Space Optimized, Channel Isolated(Reinforced) AC/DC Voltage, Current DAQ Reference Design
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Key Document
Description
This reference design highlights an architecture that is optimized for size and cost for achieving channel to channel isolation when measuring AC/DC voltage and current signals. Accuracy of ±0.3% is achieved using an ultra low power (<1mW @ 1MSPS) 12-bit ADC and an ARM core MCU. Space savings and component count reduction is achieved using a digital isolator with integrated power converter that isolates channels and ADC and MCU.
Features
- Channel to channel isolation using digital isolator with integrated power converter (ISOW7841)
- AC/DC voltage and current measurement accuracy
- AC Voltage: < ±0.25% for 5V-300V
- AC Current: < ±0.3% for 0.5A-50A
- Ultra low power (<1mW) data acquisition using ADS7043/ADS7044 and TLVx316
- Space savings achieved using REF1930 (integrated REF, REF/2) and ISOW7841 (integrated digital isolator, power converter)
- Low power consumption and simplified multi-SPI interface achieved using MSP432P401R, an ARM® Cortex®-M4F based MCU
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Schematic/Block Diagram
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Design Guide
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Bill of Materials (BOM)
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TI Devices (10)
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CAD/CAE symbols
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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.
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Technical Documents
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User guides (1)
| Title | Abstract | Type | Size (KB) | Date |
| | | PDF | 728 |
16 Mar 2018
|
Design files (6)
| | | ZIP | 736 |
23 Aug 2017
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| | | ZIP | 1020 |
23 Aug 2017
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| | | PDF | 1063 |
23 Aug 2017
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| | | PDF | 279 |
23 Aug 2017
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| | | PDF | 129 |
23 Aug 2017
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| | | PDF | 629 |
23 Aug 2017
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