8-ch Isolated High Voltage Analog Input Module with ISOW7841 Reference Design

(ACTIVE) TIDA-01333

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Key Document

Description

The TIDA-01333 isolated high voltage analog input module reference design has eight channels supporting both, voltage and current measurement. In addition, 4 channels support common-mode voltages up to ±160V. Isolation of +5V line and the Serial Peripheral Interface  (SPI) communication is done in a single chip using the ISOW7841. The design uses ADS8681 which is a 16-bit analog to digital converter (ADC)  that can handle input voltages up to ±12.288V. This makes unnecessary any preprocessing of standard input voltages in the industrial space.

Features
  • Isolated 5V supply + isolated SPI in one chip
  • Switching between voltage and current measurement for every channel
  • 4 channels with common-mode voltage of up to ±160V
  • 100MOhm input impedance
  • BeagleBone compatible

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (12)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8681  16-bit, 1 MSPS, 5V SAR ADC with Integrated Analog Front End & Bipolar Inputs  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
ISOW7841  High-Efficiency, Low-Emissions, Reinforced Digital Isolator With Integrated Power  Isolation  Sample & Buy View Design Kits & Evaluation Modules
MUX36S08  MUX36xxx 36-V, Low-Capacitance, Low-Leakage-Current, Precision, Analog Multiplexers  Switches and 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 Not Available
SN74LV1T125  Single Power Supply, Single BUFFER GATE w/ 3-State Output (active low enable)  Logic  Sample & Buy Not Available
SN74LVC1G332  Single 3-Input Positive-OR Gate  Logic  Sample & Buy Not Available
SN74LVC2G86  Dual 2-Input Exclusive-Or Gate  Logic  Sample & Buy Not Available
TPS55010  2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules
TS5A23157  Dual 10-Ohm SPDT Analog Switch  Switches and Multiplexers  Sample & Buy Not Available

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 Views TI Recommends
PDF 1406 24 Feb 2017 494
White papers (1)
Title Abstract Type Size (KB) Date Views
PDF 3648 07 Jul 2017 4,455
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 623 22 Mar 2017 19
ZIP 2244 22 Mar 2017 106
PDF 3833 22 Mar 2017 63
PDF 712 22 Mar 2017 54
PDF 77 22 Mar 2017 77
PDF 1459 22 Mar 2017 364
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
8-ch Isolated High Voltage Analog Input Module Reference Design  TIDA-00764  TI Designs


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