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High-Performance Analog>>Your Way
Digital Isolation Family
Improves Performance for Industrial Isolation Applications

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Application Notes

  • ISO72x Digital Isolator Magnetic-Field Immunity
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  • High-Voltage Lifetime of the ISO72x Family of Digital Isolators
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  • The ISO72x Family of High-Speed Digital Isolators
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The Texas Instruments Isolator product family, featuring single- and dual-channel digital isolators, delivers faster data transmission, higher magnetic immunity and longer life expectancy than the competition. With an innovative capacitive isolation technology, TI’s ISO products improve system performance and reduce cost in noisy, high-voltage applications such as factory automation, process control, computer peripherals and data acquisition systems.

TI’s capacitive technology enables magnetic immunity six orders of magnitude higher than existing inductive devices, providing immunity from external magnetic fields that frequently occur in industrial environments and can distort signal integrity. Additionally, these devices offer high immunity against data corruption given their fast voltage transients (up to 25 kV/μs).

The capacitive technology found in TI isolators provides galvanic isolation of up to 4000 V and life expectancy of >25 years (versus 7 to 10 years for competing devices). These are critical requirements in industrial applications where voltage surges can otherwise degrade device performance and life span. Used in combination with isolated power supplies, these devices block high voltages, isolate grounds and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.


See all Isolation products here.

Features:
Drop-in replacement for digital magnetic isolators
Typical 25-year life span expected at rated voltage
4000-V (peak) isolation
- UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2)
- IEC 61010-1 and CSA approved
- 25 kV/μs transient immunity
Signaling rate: 0 Mbps to 150 Mbps over -40°C to 125°C
- 1-ns pulse-width distortion
- 1-ns channel-to-channel skew
- 1-ns peak-to-peak jitter
High electromagnetic immunity: 1E6 greater than inductive solutions
Fail-safe output
Applications:
Industrial field bus
- RS-485
- CAN
- Modbus
- Profibus
- DeviceNet data buses
- Smart Distributed Systems (SDS)
Computer peripheral interface
Servo control interface
Data acquisition

Samples and Evaluation Modules Available Now
(Single Channel), (Dual Channel)

Evaluation modules and samples

Selection Guide

Interface Selection Guide
  • Interface Selection Guide
    (sszt009d.pdf, 2.3 MB)
    19 Dec 2008 Download