8-ch Isolated High Voltage Analog Input Module Reference Design
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Key Document
Description
The TIDA-00764 reference design is a high voltage analog input module with eight channels. Each channel can be used for both, voltage and current measurement. The TI Design uses the 16-bit analog-to-digital converter (ADC) ADS8681 that can handle input voltage of up to ±12.288V. This make any preprocessing of standard input voltages in the industrial space unnecessary. In addition, four channels of the design are able to handle common-mode (CM) voltages of up to ±160V. Therefore, the user does not need to worry about ground loops or compensation currents flowing between the connected inputs.
Features
- High voltage inputs of up to ±12.288V
- Voltage and current measurement for every channel
- 4 channels with common-mode of up to ±160V
- -85dB crosstalk rejection for adjacent channels
- 100MOhm input impedance
- Surge transient immunity according to EN 61000-4-5 class 2 (±1kV, 24A)
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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 (11)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| ADS8681 |
16-Bit 1MSPS Single-Supply SAR ADC Data Acquisition System With Programmable Bipolar Input Ranges |
Analog-to-digital converters (ADCs) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| INA149 |
High Common Mode Voltage Difference Amplifier |
Amplifiers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ISO7140CC |
4242-VPK Small-Footprint and Low-Power 4/0 Quad Channel Digital Isolator with Noise Filter |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ISO7141CC |
4242-VPK Small-Footprint and Low-Power 3/1 Quad Channel Digital Isolator with Noise Filter |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MUX36S08 |
MUX36xxx 36-V, Low-Capacitance, Low-Leakage-Current, Precision, Analog Multiplexers |
Switches & multiplexers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| OPA192 |
High-Voltage, Rail-to-Rail Input/Output, 5µV, 0.2µV/˚C, Precision Operational Amplifier |
Operational amplifiers (op amps) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| SN74AHC594 |
8-Bit Shift Registers With Output Registers |
Flip-flop/latch/register |
Sample & Buy |
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| SN74LVC1G332 |
Single 3-Input Positive-OR Gate |
Gate |
Sample & Buy |
Not Available |
| SN74LVC2G86 |
Dual 2-Input Exclusive-Or Gate |
Gate |
Sample & Buy |
Not Available |
| TPS55010 |
2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS |
Offline & isolated DC/DC controllers & converters |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TS5A23157 |
Dual 10-Ohm SPDT Analog Switch |
Switches & multiplexers |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
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
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
User guides (1)
| Title | Abstract | Type | Size (KB) | Date |
| | | PDF | 1677 |
30 Aug 2016
|
Design files (6)
| | | ZIP | 601 |
24 Jun 2016
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| | | ZIP | 2326 |
24 Jun 2016
|
| | | PDF | 3865 |
24 Jun 2016
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| | | PDF | 690 |
24 Jun 2016
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| | | PDF | 77 |
24 Jun 2016
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| | | PDF | 1712 |
24 Jun 2016
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