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Product details

Parameters

Integrated isolated power No Number of channels (#) 2 Forward/reverse channels 1/1 Isolation rating (Vrms) 5000, 3000 Data rate (Max) (Mbps) 100 Rating Catalog Surge voltage capability (Vpk) 12800, 8000, 7800 Current consumption per channel (DC) (Typ) (mA) 1 Current consumption per channel (1 Mbps) (Typ) (mA) 1.6 Operating temperature range (C) -55 to 125 Default output High, Low Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.25 Propagation delay (Typ) (ns) 10.7 open-in-new Find other Digital isolators

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 SOIC (DW) 16 77 mm² 10.3 x 7.5 SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Digital isolators

Features

  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-Year projected lifetime at 1.5 kVRMS working voltage
    • Up to 5000 VRMS Isolation Rating
    • Up to 12.8 kV surge capability
    • ±100 kV/µs Typical CMTI
  • Wide supply range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V level translation
  • Default output High (ISO772x) and Low (ISO772xF) Options
  • Wide temperature range: –55°C to +125°C
  • Low power consumption, typical 1.7 mA per channel at 1 Mbps
  • Low propagation delay: 11 ns typical
  • Robust electromagnetic compatibility (EMC)
    • System-Level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
    • Low emissions
  • Wide-SOIC (DW-16, DWV-8) and Narrow-SOIC (D-8) package options
  • Automotive Version Available: ISO772x-Q1
  • Safety-related certifications:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • CSA, CQC and TUV certifications

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Description

The ISO772x devices are high-performance, dual-channel digital isolators with 5000 VRMS (DW and DWV packages) and 3000 VRMS (D package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO7721B device is designed for applications that require basic insulation ratings only.

The ISO772x devices provide high electromagnetic immunity and low emissions at low power consumption, while isolating 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. The ISO7720 device has both channels in the same direction while the ISO7721 device has both channels in the opposite direction. In the event of input power or signal loss, the default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, these devices help prevent noise currents on data buses, such as RS-485, RS-232, and CAN, from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO772x devices has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO772x family of devices is available in 16-pin SOIC wide-body (DW), 8-pin SOIC wide-body (DWV), and 8-pin SOIC narrow-body (D) packages.

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Technical documentation

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Type Title Date
* Datasheet ISO772x High-Speed, Robust EMC, Reinforced and Basic Dual-Channel Digital Isolators datasheet (Rev. E) Feb. 25, 2020
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
Technical articles What the DIN VDE V 0884-11:2017-01 standard means for your isolated designs Feb. 27, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 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
Technical articles Optocouplers and silicon-based galvanic isolation technology – how do they work? Oct. 28, 2019
More literature VDE certificate for basic isolation for DIN VDE V 0884-11:2017-01 (Rev. Q) Sep. 20, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
User guides ISO77xxD Single- and Dual-Digital Isolator Evaluation Module (Rev. A) Feb. 25, 2019
Application notes Pushing the envelope with high-performance digital-isolation technology (Rev. A) Aug. 22, 2018
Application notes Considerations for Selecting Digital Isolators Jul. 24, 2018
User guides ISO77xxDWV Dual-Digital Isolator Evaluation Module Jun. 21, 2018
Application notes How to reduce radiated emissions of digital isolators for systems with RF module Mar. 26, 2018
Application notes Isolation Glossary (Rev. A) Sep. 19, 2017
Application notes Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A) Jun. 15, 2017
User guides ISO77xx Triple/Quad Digital Isolator Evaluation Module User's Guide May 05, 2016

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The ISO7721DEVM is an evaluaiton module (EVM) used to evaluate the ISO7721 high-performance, reinforced dual-channel digital isolator in an 8-pin narrow SOIC package (package code, D). The EVM features enough test points and jumper options for you to evaluate the device with minimal (...)
Features
  • High-speed, robust EMC dual-channel digital isolator
  • Wide supply and level translation range from 2.25 V to 5.5 V
  • High signaling rate up to 100 Mbps
  • Low propagation delay of11 ns typical (5-V supplies)
  • Isolation barrier life > 25 years
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The ISO7721DWVEVM is an evaluaiton module (EVM) used to evaluate the ISO7721 high-performance, reinforced two-channel digital isolator in an 8-pin wide-body (WB) SOIC package (package code, DWV). The EVM features enough test points and jumper options for you to evaluate the device with (...)
Features
  • High-speed, robust EMC two-channel digital isolator
  • Wide supply and level translation range from 2.25 V to 5.5 V
  • High signaling rate up to 100 Mbps
  • Low propagation delay of 11 ns typical (5-V supplies)
  • Isolation barrier life > 25 years
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The ISO7741EVM is an evaluaiton module (EVM) to evaluate the ISO7741. The ISO7741 is a high-performance, reinforced quad-channel digital isolator in a wide-body SOIC package (package code DW). The EVM features enough test points and jumber options for you to evaluate the (...)
Features
  • High-speed, robust EMC quad-channel digital isolator
  • Wide supply & level translation range: 2.25 V to 5.5 V
  • High signaling rate: Up to 100 Mbps
  • Low propagation delay: 11 ns typical (5-V supplies)
  • Isolation barrier life > 100 years

Design tools & simulation

SIMULATION MODELS Download
SLLM332B.ZIP (52 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design
TIDA-010065 — This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Bi-directional, dual active bridge reference design for level 3 electric vehicle charging stations
TIDA-010054 — This reference design provides an overview on the implementation of a single-phase dual active bridge (DAB) DC/DC converter. DAB topology offers advantages like soft-switching commutations, a decreased number of devices and high efficiency. The design is beneficial where power density, cost, weight (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Polyphase Shunt Metrology with Isolated AFE Reference Design
TIDA-01550 — This reference design implements a class 0.5% three-phase energy measurement system with isolated shunt sensors by using metrology analog frontends( AFEs). The metrology AFEs sense the voltage and current for each phase, calculate the metrology parameters for the phase, and then send out the (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Three-phase, 1.25-kW, 200-VAC small form factor GaN inverter reference design for integrated drives
TIDA-00915 — This reference design is a three-phase inverter with a continuous power rating of 1.25 kW at 50°C ambient and 550 W at 85°C ambient for driving 200-V AC servo motors. It features 600-V LMG3411R150 Gallium Nitride (GaN) power modules with an integrated FET and gate driver mounted on an (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
In-phase current-sense reference design for 230-VAC motor drives using hall-effect current sensors
TIDA-010059 — This reference design features the Hall-effect current sensor, TMCS1100, that can measure currents with an absolute error of < 1% (–40 to 125°C) and provide a working isolation voltage of up to 600 V. The low-resistance in-package current sensing element and lack of need for high-side (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
RTD replacement for cold junction compensation reference design in a temperature sensor
TIDA-010019 — Temperature-sensing applications that use a thermocouple (TC) require an accurate local temperature sensor to achieve high accuracy. Solutions for design challenges such as cold-junction compensation (CJC) or including an ultra-low power TC analog front-end are highlighted and addressed in this (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference design for power-isolated ultra-compact analog output module
TIDA-01535 This single-channel, power-isolated, analog output module reference design delivers current and voltage outputs using the highly-integrated DAC8771 digital-to-analog converter (DAC). The high integration of the DAC8771 coupled with the LM25180 primary-side regulated flyback converter lead to a (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Channel-to-channel isolated analog input module reference design
TIDA-010048 — This reference design is a four channel-to-channel, isolated 4–20 mA, current-loop analog input module. The design includes a short circuit, overcurrent, and overvoltage limit function for condition monitoring sensor and module applications. The major features of this analog input module (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated Shunt Current Measurement with Standalone Digital Filters Reference Design
TIDA-01639 — This reference design implements a class 0.5 three phase energy measurement system with isolated shunt sensors by using isolated modulators and independent digital filters, enabling a wider choice of host microcontrollers (MCU) as integrated sync filters are no longer required. In this design (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated CAN Flexible Data (FD) Rate Repeater Reference Design
TIDA-01487 — CAN and CANopen are legacy fieldbus protocols used in many applications in factory automation. Whenever high voltage could damage the end equipment there is need for isolation. This isolated CAN flexible data (FD) rate repeater reference design adds electrical isolation between two CAN bus (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOIC (DW) 16 View options
SOIC (DWV) 8 View options

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