8-ch Isolated High Voltage Analog Input Module Reference Design

(ACTIVE) TIDA-00764

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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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Design Files

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Bill of Materials (BOM)

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TI Devices (11)

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Part Number Name Product Family 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 Not Available
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

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS8681 Download
Download Download
INA149 Download Download
ISO7140CC Download Download
ISO7141CC Download Download
MUX36S08 Download
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OPA192 Download Download
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SN74AHC594 Download Download
Download Download
Download Download
Download Download
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SN74LVC1G332 Download Download
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Download
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SN74LVC2G86 Download
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TPS55010 Download Download
TS5A23157 Download Download
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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 Views TI Recommends
PDF 1677 30 Aug 2016 194
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 601 24 Jun 2016 57
ZIP 2326 24 Jun 2016 21
PDF 3865 24 Jun 2016 13
PDF 690 24 Jun 2016 13
PDF 77 24 Jun 2016 15
PDF 1712 24 Jun 2016 131

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