ISO7041

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Ultra-low power, ATEX/IECEx-certified, four-channel digital isolator

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Product details

Parameters

Integrated isolated power No Number of channels (#) 4 Forward/reverse channels 3/1 Isolation rating (Vrms) 3000 Data rate (Max) (Mbps) 4 Rating Catalog Surge voltage capability (Vpk) 6400 Current consumption per channel (DC) (Typ) (mA) 0.0042 Current consumption per channel (1 Mbps) (Typ) (mA) 0.116 Operating temperature range (C) -55 to 125 Default output High, Low Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 1.71 Propagation delay (Typ) (ns) 140 open-in-new Find other Digital isolators

Package | Pins | Size

SSOP (DBQ) 16 29 mm² 4.9 x 6 open-in-new Find other Digital isolators

Features

  • Ultra-low power consumption
    • 3.5 µA per channel quiescent current (3.3 V)
    • 15 µA per channel at 100 kbps (3.3 V)
    • 116 µA per channel at 1 Mbps (3.3 V)
  • Robust isolation barrier
    • >100-year projected lifetime
    • 3000 VRMS isolation rating
    • ±100 kV/µs typical CMTI
  • Wide supply range: 1.71 V to 1.89 V and 2.25 V to 5.5 V
  • Wide temperature range:
    • 1.71 V to 1.89 V: –55°C to +105°C
    • 2.25 V to 5.5 V: –55°C to +125°C
  • Small 16-QSOP package (16-DBQ)
  • Signaling rate: Up to 4 Mbps
  • Default output High (ISO7041) and Low (ISO7041F) options
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
    • Very low emissions
  • Safety-related certifications :
    • UL 1577 Component Recognition Program
    • DIN VDE V 0884-11
    • CQC, TUV and CSA
    • IECEx (IEC 60079-0 & IEC 60079-11) and ATEX (EN 60079-0 & EN 60079-11)

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Description

The ISO7041 device is an ultra-low power, multichannel digital isolator that can be used to isolate CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier. Innovative edge based architecture combined with an ON-OFF keying modulation scheme allows these isolators to consume very-low power while meeting 3000-VRMS isolation rating per UL1577. The per channel dynamic current consumption of the device is under 120 µA/Mbps and the per channel static current consumption is 3.5 µA at 3.3 V, allowing for use of the ISO7041 in both power and thermal constrained system designs.

The device can operate as low as 1.71 V, as high as 5.5 V , and is fully functional with different supply voltages on each side of isolation barrier. The four channel isolator comes in a 16-QSOP package with three forward-direction channels and one reverse-direction channel. The device has default output high and low options. If the input power or signal is lost, default output is high for the ISO7041 device without the suffix F and low for the ISO7041F device with the F suffix. See the Device Functional Modes section for more information.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet ISO7041 Ultra-Low Power Four-Channel Digital Isolator datasheet (Rev. D) Feb. 27, 2020
Technical articles Upgrade your explosive atmosphere designs with IECEx-certified digital isolators Nov. 06, 2020
Technical articles How to select the right digital isolator for your design Oct. 21, 2020
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators Oct. 12, 2020
Application note Intrinsic Safety Compliance of Digital Isolators in Explosive Atmospheres May 18, 2020
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
More literature ATEX Certificate for Explosive Atmospheres: CSANe 20ATEX2003U Jan. 31, 2020
More literature IECEx Certificate for Explosive Atmospheres: IECEx CSA 19.0040U Jan. 31, 2020
Technical articles Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
More literature CSA Certification (Rev. P) Nov. 19, 2019
More literature VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. N) Nov. 13, 2019
Application note How to Isolate Two-Wire Loop-Powered Field Transmitters (Rev. B) Oct. 07, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
User guide ISO7041 EVM User Guide (Rev. A) Jun. 14, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description
The ISO7041DBQEVM is an evaluaiton module used to evaluate the ISO7041 low-power quad channel digital isolator in a 16-pin SSOP package (package code, DBQ). The EVM features enough test points, jumper option, and current sense capabilities for you to evaluate the device with minimal (...)
Features
  • Ultra-low-power consumption
  • 4-kV surge isolation
  • 2 Mbps

Design tools & simulation

SIMULATION MODEL Download
SLLM424.ZIP (69 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
Isolated power and data interface for low-power applications reference design
TIDA-010018 — This reference design provides power and data isolation for low and ultra-low power applications. Generating isolated and non-isolated power rails with a high efficiency and containing a power efficient isolated data interface for three forward- plus one reverse-direction channels. Targeted (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SSOP (DBQ) 16 View options

Ordering & quality

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  • Ongoing reliability monitoring

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