Cost and Space Optimized, Channel Isolated(Reinforced) AC/DC Voltage, Current DAQ Reference Design
TIDA-01430
(ACTIVE)
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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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TI Devices (10)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| ADS7043 |
Ultra-Low-Power Ultra-Small-Size SAR ADC | 12 Bit | 1MSPS | Pseudo Differential |
Analog-to-digital converters (ADCs) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ADS7044 |
Ultra-Low-Power Ultra-Small-Size SAR ADC | 12 Bit | 1MSPS | Fully Differential |
Analog-to-digital converters (ADCs) |
Sample & Buy |
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| CSD17571Q2 |
30V, N ch NexFET MOSFET™, single SON2x2, 29mOhm |
MOSFETs |
Sample & Buy |
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| ISOW7841 |
High-efficiency, low-emissions, reinforced digital isolator with integrated power |
Isolation |
Sample & Buy |
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| LP5907 |
250-mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator |
Power management |
Sample & Buy |
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| REF1930 |
Dual Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
| SN74LVC1G17 |
Single Schmitt-Trigger Buffer |
Buffer/driver |
Sample & Buy |
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| TLV2316 |
10-MHz, Low-Noise, RRIO, CMOS Operational Amplifier for Cost-Sensitive Systems |
Operational amplifiers (op amps) |
Sample & Buy |
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| TLV316 |
10-MHz, Low-Noise, RRIO, CMOS Operational Amplifier for Cost-Sensitive Systems |
Operational amplifiers (op amps) |
Sample & Buy |
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| TLV431A |
1% Accuracy Low-Voltage Adjustable Precision Shunt Regulator |
Voltage references |
Sample & Buy |
View Design Kits & Evaluation Modules |
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.
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Technical Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 728 |
16 Mar 2018
|
Design files (6)
| | ZIP | 736 |
23 Aug 2017
|
| | 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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