ISO7720QDRQ1

Texas Instruments ISO7720QDRQ1 – Automotive, Reinforced Dual-Channel (2/0) Digital Isolator in 8‑SOIC

The Texas Instruments ISO7720QDRQ1 is an automotive-grade, reinforced digital isolator engineered to deliver high-speed, robust isolation for safety-critical and noise-challenged systems. Part of TI’s ISO77xx family, this two-channel, same-direction (2/0) device supports data rates up to 100 Mbps in a compact 8-pin SOIC package. With an operating temperature range of -40°C to +125°C and AEC‑Q100 (Q1) qualification, the ISO7720QDRQ1 targets stringent automotive environments such as battery management systems (BMS), on-board chargers (OBC), DC/DC converters, and traction inverter control, as well as industrial designs that demand reinforced isolation integrity.

Engineers gravitate to the ISO7720QDRQ1 for its straightforward unidirectional channel configuration, robust EMC immunity (per the ISO77xx family), and space-efficient package that drops into densely packed boards. Sourcing managers appreciate that the device is listed Active by Texas Instruments and is RoHS compliant, simplifying compliance and lifecycle planning.

At-a-Glance Features

• Brand/manufacturer: Texas Instruments (TI)
• Series: ISO77xx
• MPN: ISO7720QDRQ1
• Isolation: Reinforced
• Channel configuration: 2/0 (two forward, zero reverse)
• Data rate: Up to 100 Mbps
• Operating temperature: -40°C to +125°C
• Package/case: 8‑pin SOIC (D), Surface Mount
• Packaging: Tape & Reel (suffix DR)
• Automotive qualification: AEC‑Q100 (Q1 grade)
• EMC: Robust immunity characteristics per TI family information

What the ISO7720QDRQ1 Does in Your System

Digital isolators provide galvanic isolation between two circuits while allowing digital information to pass across an isolation barrier. The Texas Instruments ISO7720QDRQ1 specifically offers two unidirectional channels in the same direction (2/0), which is ideal when both signals flow from a noisy or high-voltage side to a logic/control side (or vice versa) without the need for a return channel.

This configuration is often preferred in:

• Measuring or monitoring subsystems where sensor or power-stage status signals must cross to a safety MCU domain
• Power conversion blocks where PWM or enable signals pass from a low-voltage controller to the high-voltage gate-driver domain
• High-noise automotive subsystems where reinforced isolation and strong EMC immunity help maintain signal integrity

With its up to 100 Mbps rating, the ISO7720QDRQ1 supports fast timing interfaces and crisp signal edges, enabling wide safety margins for control loops and monitoring paths in demanding applications.

Technical Specifications

Below are the primary specifications available from the provided data. Where details are not present, they are noted accordingly in line with best sourcing practices.

• Isolation: Reinforced (isolation voltage rating: Not specified in datasheet)
• Channels: Dual, both forward (2/0)
• Maximum data rate: 100 Mbps
• Operating temperature range: -40°C to +125°C
• Package/case: SOIC‑8 (D)
• Mounting type: Surface Mount (SMD/SMT)
• Automotive qualification: AEC‑Q100 (Q1 grade)
• EMC: Robust immunity (per TI ISO77xx family information)
• RoHS status: RoHS Compliant
• Power consumption: Not specified in datasheet
• Propagation delay/skew/CMTI: Not specified in datasheet
• Isolation certifications/standards: Not specified in datasheet

Note: Always refer to the official TI datasheet for complete electrical characteristics, recommended operating conditions, and layout guidelines.

Electrical and Performance Notes

• Directionality: The two channels transmit in the same direction, simplifying routing when signals all move from one domain to the other.
• Speed headroom: Up to 100 Mbps accommodates fast control signals and high-speed status lines used in modern electrified and automated systems.
• EMC resilience: Robust family-level EMC immunity helps maintain signal fidelity across harsh automotive and industrial noise environments.

Package, Mounting, and Pin Count

• Package: 8‑pin SOIC (D)
• Pin count: 8
• Mounting: Surface Mount (SMD/SMT)
• Orderable packaging: Tape & Reel indicated by the “DR” suffix

The small, standard SOIC footprint helps with straightforward manufacturing, inspection, and rework, while remaining compact for tight automotive PCBs.

Applications

The Texas Instruments ISO7720QDRQ1 aligns strongly with systems that require reinforced isolation and automotive reliability:

• Automotive systems requiring reinforced isolation
• Isolated digital interfaces and signal level translation
• Battery management systems (BMS)
• On-board chargers (OBC) and DC/DC converters
• Traction inverter and motor control

In these use cases, the reinforced isolation barrier helps protect low-voltage controllers from high-voltage transients, while the 100 Mbps data rate ensures signals remain clean and timely across the barrier.

Design-In Considerations

Channel Mapping and Directionality

The 2/0 configuration means both channels travel in the same direction. When planning your interface, decide which side is the transmitter and ensure both signals originate there. If you need bidirectional communication (such as request/acknowledge), you may need a companion isolator with the opposite direction or a device with a 1/1 configuration.

Power Domains and Grounds

Digital isolators typically require power on both sides of the isolation barrier (one supply for the primary side and another for the secondary side), each referenced to its local ground. This ensures full galvanic isolation. The specific supply voltage ranges, decoupling guidance, and pin assignments are not specified in the provided data; consult the TI datasheet for exact requirements and recommended bypassing.

EMC and Signal Integrity

The ISO7720QDRQ1 inherits robust EMC immunity from the ISO77xx family. To maximize performance in noisy environments:

• Keep high dv/dt nodes and switching power loops away from isolator traces
• Use short, direct routes for high-speed lines
• Provide solid local decoupling on both sides of the isolator
• Follow TI’s layout recommendations in the datasheet and any relevant application notes

Safety and Clearance

Reinforced isolation supports applications that demand higher safety margins than basic isolation. However, creepage/clearance distances, working voltage, surge capability, and precise isolation ratings are not specified in the provided data. Verify these in the datasheet against your regulatory targets before finalizing the PCB and safety file.

Compliance and Quality

• Automotive qualification: AEC‑Q100 (Q1 grade)
• Environmental: RoHS Compliant
• Isolation classification: Reinforced
• Isolation certifications/ratings: Not specified in datasheet

For OEM and Tier‑1 automotive programs, the AEC‑Q100 qualification streamlines sourcing and PPAP documentation paths, while RoHS compliance supports global environmental mandates.

Lifecycle, Availability, and Sourcing Guidance

• Lifecycle status: Active (per Texas Instruments product page)
• Replacements: None listed in the provided data
• Series context: ISO77xx family

Sourcing tips for the Texas Instruments ISO7720QDRQ1:

• Validate the full part number string. “Q1” denotes automotive grade; “DR” indicates Tape & Reel packaging for the SOIC (D) package.
• Confirm isolation requirements and ratings against your end‑equipment standards before committing to a BOM.
• Align your AVL to include the ISO7720QDRQ1 where reinforced isolation and 2/0 directionality are required.
• For supply assurance, consider multiple franchised distributors and TI’s authorized channels. Lead times can vary with automotive demand cycles.

Ordering Information

• Manufacturer: Texas Instruments
• MPN: ISO7720QDRQ1
• Package: SOIC‑8 (D)
• Mounting: Surface Mount (SMD/SMT)
• Packaging: Tape & Reel (orderable suffix “DR”)
• Qualification: Automotive AEC‑Q100 (Q1 grade)

If your assembly requires alternate packaging or a different channel orientation, explore other ISO77xx variants on TI’s product page and align with your DFM/DFT requirements. Specific alternates are not provided in this dataset; consult TI if you need pin‑compatible options.

Why Choose the Texas Instruments ISO7720QDRQ1?

• Automotive pedigree: AEC‑Q100 (Q1) qualification indicates robust testing suitable for harsh automotive conditions.
• Reinforced isolation: Supports safety‑critical partitioning and higher working voltages versus basic isolation devices.
• High throughput: Up to 100 Mbps enables tight timing budgets for control and monitoring.
• Compact and manufacturable: 8‑pin SOIC makes layout, assembly, and rework straightforward.
• Robust EMC: Family‑level immunity characteristics help keep signals clean in high-noise environments.

Alternatives and Replacements

• Official replacements: Not listed in the provided data.
• Family options: If you need different directionality (e.g., 1/1 or 1/0), or different channel counts, explore neighboring ISO77xx devices on TI’s site. Verify isolation class, certifications, and pinout carefully before substitution.

Frequently Asked Questions (FAQs)

What does the 2/0 channel configuration mean?

It indicates two forward channels and zero reverse channels—both channels transmit in the same direction.

What does the Q1 suffix signify?

Q1 denotes automotive-grade qualification (AEC‑Q100), indicating suitability for automotive environments and reliability expectations.

What is the maximum data rate of the Texas Instruments ISO7720QDRQ1?

Up to 100 Mbps.

What operating temperature range does it support?

-40°C to +125°C.

Is the isolation classification reinforced or basic?

Reinforced.

What is the isolation voltage or surge rating?

Not specified in datasheet (based on the provided information). Refer to the official TI datasheet for exact isolation ratings and certifications.

What package is the ISO7720QDRQ1 offered in?

8‑pin SOIC (D), Surface Mount.

Is the ISO7720QDRQ1 RoHS compliant?

Yes, RoHS Compliant per the provided data.

Does the device require power on both sides of the isolation barrier?

Digital isolators typically need separate supplies on each side of the barrier. Specific supply voltages and pin functions are not specified in the provided data—consult the TI datasheet for details.

Resources

• TI Product Page: https://www.ti.com/product/ISO7720-Q1
• TI Datasheet: https://www.ti.com/lit/ds/symlink/iso7720-q1.pdf

If your project requires reinforced isolation, automotive qualification, and a fast, unidirectional 2/0 channel scheme, the Texas Instruments ISO7720QDRQ1 is a strong candidate. Its combination of AEC‑Q100 pedigree, up to 100 Mbps throughput, and compact SOIC‑8 packaging streamlines both the design and sourcing process, helping you build reliable, compliant systems with fewer surprises.