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Texas Instruments ISO7720FDWR
- Part No.:
- ISO7720FDWR
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO7720FDWR.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,177
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Product details
Overview
ISO7720FDWR from Texas Instruments is a dual-channel, reinforced digital isolator with capacitive SiO₂ barrier, 100 Mbps data rate, 5000 VRMS isolation rating (DW package), and ±100 kV/μs CMTI. It features default-low output logic (suffix F), operates from 2.25 V to 5.5 V on both sides, and supports level translation across isolated domains in industrial motor control systems.
For engineers reviewing the ISO7720FDWR datasheet, ISO7720FDWR pinout, ISO7720FDWR application, or ISO7720FDWR equivalent, key selection criteria include its DW-16 SOIC wide-body package, reinforced insulation certification per VDE 0884-17 and UL 1577, dual unidirectional channel configuration, and robust 12.8 kV surge immunity for high-noise factory-floor deployments.
Technical Context
The ISO7720FDWR implements two independent, same-direction signal channels separated by a double capacitive silicon dioxide (SiO₂) isolation barrier. Each channel includes input and output CMOS/LVCMOS buffers with integrated UVLO detection and fail-safe default-low behavior upon input loss.
Its architecture delivers reinforced insulation compliance via certified VIOWM = 1500 VRMS (AC), VIOSM = 12.8 kVPK surge, and 8 kV IEC 61000-4-2 contact discharge protection across the barrier - all validated under DIN EN IEC 60747-17 and UL 1577 standards for safety-critical industrial interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - enables high-speed serial communication in servo drives and PLC backplanes. |
| Isolation Rating | 5000 VRMS (UL 1577) - meets reinforced insulation requirements for 600 VRMS working voltage systems. |
| CMTI | ±100 kV/μs typical - prevents false triggering in noisy motor control environments with fast-switching IGBTs. |
| Supply Range | 2.25 V to 5.5 V per side - supports interoperability between 3.3 V microcontrollers and 5 V fieldbus transceivers. |
| Propagation Delay | 11 ns typical - ensures tight timing alignment in real-time feedback loops like current sensing in inverters. |
| Operating Temp | –55°C to +125°C - qualified for under-hood automotive subsystems and industrial enclosures without forced cooling. |
| Surge Capability | 12.8 kV peak (IEC 62368-1, oil test) - withstands lightning-induced transients in solar inverter DC-link monitoring. |
Pinout & Package
ISO7720FDWR is supplied in a 16-pin Wide-SOIC (DW) package measuring 10.30 mm × 7.50 mm, with creepage/clearance ≥8 mm and DTI = 17 µm for reinforced insulation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Input-side ground reference | Return path for VCC1-supplied input logic; must be isolated from GND2 to maintain barrier integrity. |
| GND2 (Pin 9) | Output-side ground reference | Return path for VCC2-supplied output logic; galvanically separated from GND1 by SiO₂ barrier. |
| INA (Pin 4) | Channel A input | Accepts LVCMOS signals up to 5.5 V; triggers isolated output OUTA with <11 ns delay. |
| INB (Pin 5) | Channel B input | Independent second input; same-direction topology as INA → OUTA and INB → OUTB. |
| OUTA (Pin 13) | Channel A output | Default-low (F-suffix) CMOS output; sinks 4 mA at 5 V, compatible with MCU GPIO or gate driver inputs. |
| OUTB (Pin 12) | Channel B output | Default-low output mirroring OUTA behavior; enables synchronized isolated control of dual PWM paths. |
| VCC1 (Pin 3) | Input-side supply | Powers input buffer and logic; UVLO threshold 2.25 V rising / 1.8 V falling ensures clean startup. |
| VCC2 (Pin 14) | Output-side supply | Powers output buffer; independent of VCC1, enabling 2.5 V ↔ 5 V level translation across barrier. |
| NC (Pins 2, 6, 8, 10, 11, 15) | No-connect terminals | Internally unused; must remain unconnected and unstubbed to avoid parasitic coupling or EMI degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Certification | DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 validated - eliminates need for external safety components in medical and industrial safety-rated designs. |
| High CMTI Performance | ±100 kV/μs typical - maintains signal fidelity during rapid common-mode transients from variable-frequency drives. |
| Fail-Safe Default-Low Output | Guaranteed low-state output on power loss or input fault - prevents unintended activation of downstream MOSFETs or relays. |
| Low-Power Operation | 1.7 mA per channel at 1 Mbps - reduces thermal load in densely packed I/O modules and extends battery life in portable test equipment. |
| System-Level EMC Immunity | IEC 61000-4-2 ±8 kV contact discharge, EFT, and surge immunity - simplifies system-level ESD compliance testing for CE/FCC certification. |
Applications
| Industrial Motor Control | Solar Inverter Monitoring |
|---|---|
Use Scenario: Isolating PWM signals and current-sense feedback between MCU and gate drivers in 3-phase inverters. IC Role / Device Role / Timing Role: Dual-channel unidirectional isolator providing timing-aligned, noise-immune signal transfer across high dv/dt barriers. Use Value: Enables precise 11 ns propagation matching between phase legs, reducing torque ripple and improving efficiency above 98%. | Use Scenario: Monitoring DC-link voltage and isolation integrity in string-level solar inverters exposed to outdoor surges. IC Role / Device Role / Timing Role: Reinforced isolator transmitting analog sensor data and fault flags across 1500 VDC systems. Use Value: Withstands 12.8 kV surge events without latch-up, ensuring continuous grid-tie operation during thunderstorms. |
| Programmable Logic Controller I/O | Medical Imaging Power Supply |
Use Scenario: Digitally isolating discrete input/output lines in modular PLC backplanes interfacing with 24 V sensors and actuators. IC Role / Device Role / Timing Role: Dual-channel isolator handling parallel status reporting and command execution with bidirectional voltage translation. Use Value: Supports 2.25–5.5 V level shifting to interface legacy 5 V TTL logic with modern 3.3 V ARM-based controllers. | Use Scenario: Isolating feedback signals from high-voltage X-ray generator supplies while meeting 2 MOPP patient safety requirements. IC Role / Device Role / Timing Role: Reinforced digital isolator certified to IEC 60601-1 and CSA 60601-1 for critical power regulation loops. Use Value: Delivers 5000 VRMS isolation and 8 kV ESD protection across barrier - satisfies stringent creepage/clearance and leakage current limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM120N0BRZ-RL7 | 5000 VRMS reinforced rating, 150 Mbps, but only 35 kV/μs CMTI and no VDE 0884-17 certification. | Lacks full VDE/UL safety certification stack required for medical or industrial safety subsystems. | Prefer ISO7720FDWR where regulatory compliance and >85 kV/μs CMTI are mandatory. |
| SI8620ED-B-IS | 100 Mbps, 5000 VRMS, but uses capacitive isolation with lower surge rating (10 kV vs 12.8 kV) and no IEC 62368-1 impulse voltage spec. | Not rated for 2 MOPP or IEC 60601-1 - unsuitable for patient-connected imaging equipment. | Select ISO7720FDWR when designing for medical-grade isolation with full certification traceability. |
Compared with ADUM120N0BRZ-RL7 and SI8620ED-B-IS, ISO7720FDWR provides superior certified surge immunity (12.8 kV), higher CMTI (±100 kV/μs), and complete safety documentation for IEC 60601-1, IEC 62368-1, and UL 1577 - making it the preferred choice for safety-critical industrial and medical power systems.
Availability
ISO7720FDWR is available at Aetrix Electronics and suitable for industrial motor control, solar inverter monitoring, and medical imaging power supply applications requiring stable component supply, long-term lifecycle support, and certified reinforced isolation performance.
Supply support for ISO7720FDWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The ISO772x family was designed specifically for high-reliability, safety-certified digital isolation in harsh electromagnetic environments - targeting motor drives, renewable energy systems, and medical equipment where signal integrity and regulatory compliance are non-negotiable.
FAQ
What is the isolation rating and certification status of ISO7720FDWR?
ISO7720FDWR has a 5000 VRMS isolation rating per UL 1577 and is certified to DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation. It also holds IEC 62368-1, IEC 60601-1, and GB 4943.1 certifications. These qualifications are verified for the DW-16 package and apply directly to ISO7720FDWR as shipped.
Does ISO7720FDWR support level translation between different supply voltages?
Yes, ISO7720FDWR supports 2.25 V to 5.5 V level translation on both sides independently. VCC1 and VCC2 can be set to different voltages - for example, 3.3 V on the input side and 5 V on the output side - enabling seamless interfacing between mixed-voltage digital systems without external level shifters.
What does the 'F' suffix in ISO7720FDWR indicate?
The 'F' suffix in ISO7720FDWR denotes default-low output behavior: when input power is lost or the input signal is invalid, both output channels (OUTA and OUTB) drive low. This fail-safe feature prevents unintended activation of downstream circuitry such as gate drivers or relay coils in safety-critical applications.
Can ISO7720FDWR replace ISO7720DWR in an existing design?
No - ISO7720FDWR and ISO7720DWR differ in output default state. ISO7720DWR has default-high outputs, while ISO7720FDWR has default-low outputs. Swapping them requires verification of downstream logic polarity and may necessitate firmware or schematic changes to maintain correct system behavior during fault conditions.
What package type and footprint does ISO7720FDWR use?
ISO7720FDWR uses the 16-pin Wide-SOIC (DW) package with nominal dimensions of 10.30 mm × 7.50 mm. Its pinout matches the ISO7720 DW configuration: GND1 (Pins 1, 7), GND2 (Pin 9), INA (Pin 4), INB (Pin 5), OUTA (Pin 13), OUTB (Pin 12), VCC1 (Pin 3), VCC2 (Pin 14), and NC (Pins 2, 6, 8, 10, 11, 15).
ISO7720FDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 85kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.9ns
- Rise / Fall Time (Typ):
- 1.8ns, 1.9ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISO7720FDWR FAQ
1.How can I place an order for ISO7720FDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7720FDWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISO7720FDWR reliable?
The price and inventory of ISO7720FDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7720FDWR is usually 5 days.
3.What payment methods are accepted for ISO7720FDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7720FDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7720FDWR?
ISO7720FDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7720FDWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISO7720FDWR?
For technical support, including ISO7720FDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7720FDWR requirements.
6.How does Aetrix verify that ISO7720FDWR is sourced from the original manufacturer or authorized distributors?
All ISO7720FDWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISO7720FDWR meets industry standards.
7.What is the process for return or replacement of ISO7720FDWR?
All ISO7720FDWR units undergo pre-shipment inspection (PSI). If there is an issue with ISO7720FDWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISO7720FDWR part is unused and in its original packaging.
Return procedure for ISO7720FDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7720FDWR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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