My Inquiry
My Account
Texas Instruments ISO7041FQDBQRQ1
- Part No.:
- ISO7041FQDBQRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ISO7041FQDBQRQ1.pdf
- Description:
- AUTOMOTIVE, 120-UA, ULTRA-LOW PO
- Quantity:
- Payment:
- Shipping:
Inventory:4,698
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISO7041FQDBQRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade, ultra-low-power four-channel digital isolator with capacitive SiO₂ isolation barrier, 3000 VRMS rating, ±100 kV/μs CMTI, and 4 Mbps signaling rate - used for signal integrity and safety isolation in battery management systems and traction inverters.
For engineers reviewing the ISO7041FQDBQRQ1 datasheet, ISO7041FQDBQRQ1 pinout, ISO7041FQDBQRQ1 application, or ISO7041FQDBQRQ1 equivalent, this page delivers verified technical context, real-world design implications of quiescent current (3.5 μA/ch @ 3.3 V), default-low output behavior, QSOP-16 package constraints, and functional safety documentation support per ISO 26262 ASIL readiness.
Technical Context
The ISO7041FQDBQRQ1 implements edge-based encoding with ON-OFF keying (OOK) modulation across a double-capacitive SiO₂ barrier, enabling <120 μA/Mbps dynamic current consumption while maintaining 3000 VRMS UL 1577 isolation. Its architecture includes integrated refresh logic with watchdog timer (100 μs timeout) to enforce DC state matching between input and output.
It supports asymmetric supply operation (VCC1 = 3.0–5.5 V, VCC2 = 3.0–5.5 V), features three forward-direction and one reverse-direction channels, and delivers 148–165 ns propagation delay with ≤10 ns channel-to-channel skew - critical for timing-critical motor control feedback loops and isolated UART/ SPI interfaces in EV powertrain systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3000 VRMS per UL 1577; enables reinforced insulation in 400 V DC bus systems without external creepage reinforcement |
| Quiescent Current | 3.5 μA per channel at 3.3 V; allows continuous monitoring in always-on BMS subsystems with <15 μA total standby draw |
| Data Rate | Up to 4 Mbps; supports high-speed isolated CAN FD transceiver interfaces and fast ADC sampling clock isolation |
| CMTI | ±100 kV/μs typical; prevents false triggering during high dv/dt switching events in SiC/GaN inverter gate drivers |
| Default Output State | Low (F-suffix); ensures fail-safe shutdown of downstream MOSFET gates upon input power loss in traction inverter control |
| Operating Temperature | –40°C to +125°C ambient; qualified for under-hood placement in on-board chargers and DC/DC converters |
| Supply Range | 3.0 V to 5.5 V per side; permits direct interface with 3.3 V MCU I/O and 5 V analog sensing circuitry across barrier |
Pinout & Package
ISO7041FQDBQRQ1 is housed in a 16-pin QSOP (DBQ) package measuring 4.90 mm × 3.90 mm, optimized for thermal performance (RθJA = 87.0°C/W) and PCB space efficiency in automotive power modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 | Primary-side power supply | Supplies input-side logic and transmitter; must be decoupled locally to suppress high-frequency OOK carrier noise |
| VCC2 | Secondary-side power supply | Supplies output-side logic and receiver; independent voltage setting enables level-shifting between 3.3 V and 5 V domains |
| GND1 (pins 2,7,8) | Primary-side ground reference | Three dedicated GND1 pins reduce ground bounce and improve EMI immunity for high-speed input signals |
| GND2 (pins 9,10,15) | Secondary-side ground reference | Three GND2 pins ensure low-impedance return path for isolated outputs driving gate drivers or ADC references |
| INA–IND | Input channels A–D | All inputs require 300 Ω series resistor for ESD protection and impedance matching per TI layout guidelines |
| OUTA–OUTD | Output channels A–D | Outputs drive CMOS/LVCMOS loads; OUTD is reverse-direction channel, enabling bidirectional communication with single device |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in safety-critical EV powertrain ECUs |
| Functional Safety-Capable documentation | Includes FIT rate data, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B system integration |
| VDA320 compliance | Meets German automotive industry requirements for isolation robustness in high-voltage battery systems |
| Ultra-low 115.7–138.7 μA/ch @ 1 Mbps (3.3 V) | Enables thermally constrained designs in sealed on-board charger enclosures without forced air cooling |
| ±8 kV IEC 61000-4-2 contact ESD across barrier | Eliminates need for external TVS diodes on isolated signal lines in service port interfaces |
Applications
| Battery Management System (BMS) | On-Board Charger (OBC) |
|---|---|
Use Scenario: Isolating cell voltage monitor IC serial outputs from MCU host in 96-cell lithium-ion pack. IC Role / Device Role / Timing Role: Four-channel digital isolator providing galvanic separation for daisy-chained ADC data and fault signals across 400 V potential difference. Use Value: 3.5 μA/ch quiescent current extends pack sleep-mode runtime; 100 kV/μs CMTI prevents corruption during cell balancing transients. |
Use Scenario: Isolating digital control signals between AC/DC PFC controller and DC/DC LLC controller in bi-directional OBC. IC Role / Device Role / Timing Role: Forward/reverse channel configuration enables isolated feedback loop closure and status reporting across primary-secondary boundary. Use Value: 4 Mbps data rate supports real-time PWM synchronization; default-low output ensures safe disable of secondary-side gate drivers during brownout. |
| Traction Inverter Control | DC/DC Converter Monitoring |
Use Scenario: Isolating isolated gate driver enable/disable signals and fault acknowledgments in 800 V SiC inverter stack. IC Role / Device Role / Timing Role: Reverse-direction channel carries fault acknowledgment from gate driver IC back to MCU; forward channels deliver PWM commands. Use Value: 148 ns propagation delay minimizes dead-time uncertainty; 3000 VRMS rating satisfies reinforced insulation for 800 V DC link applications. |
Use Scenario: Isolating temperature and current sensor outputs from 48 V auxiliary DC/DC converter control unit. IC Role / Device Role / Timing Role: Digital isolator replacing optocouplers for isolated I²C or SPI sensor interface in compact, thermally limited module. Use Value: QSOP-16 footprint reduces board area vs legacy SOIC-16; 3.0–5.5 V supply range simplifies biasing from local LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-B-IS | Capacitive isolation, 5000 VRMS, 150 kV/μs CMTI, but higher 5.5 μA/ch quiescent current at 3.3 V | Used in industrial PLCs; lacks AEC-Q100 Grade 1 qualification and VDA320 compliance | Select when higher CMTI is prioritized over automotive qualification and ultra-low power |
| ADUM1401ARWZ-RL | 4-channel magnetic isolator, 2500 VRMS, 25 kV/μs CMTI, 10 μA/ch quiescent current at 3.3 V | Common in medical equipment; no automotive qualification, lower isolation rating, and inferior noise immunity | Choose only for non-automotive cost-sensitive designs where 2500 VRMS meets system requirements |
Compared with SI8641ED-B-IS and ADUM1401ARWZ-RL, ISO7041FQDBQRQ1 uniquely combines AEC-Q100 Grade 1, VDA320, 3000 VRMS, and sub-4 μA/ch quiescent current - making it the only qualified option for thermally constrained, safety-critical EV battery and inverter subsystems requiring long-term reliability at 125°C.
Availability
ISO7041FQDBQRQ1 is available at Aetrix Electronics and suitable for battery management systems, on-board chargers, traction inverters, and DC/DC converters requiring stable component supply across automotive production lifecycles.
Supply support for ISO7041FQDBQRQ1 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 leader focused on analog, embedded processing, and automotive ICs, with deep expertise in high-reliability isolation technology and functional safety certification.
The ISO7041-Q1 product line is designed specifically for automotive powertrain and energy storage applications, delivering ultra-low-power, AEC-Q100-qualified digital isolation for EV/HEV battery, charging, and motor control systems.
FAQ
What does the 'F' suffix in ISO7041FQDBQRQ1 indicate?
The 'F' suffix denotes the default-low output configuration: when input power or signal is lost, all outputs of ISO7041FQDBQRQ1 assert low. This fail-safe behavior is essential for disabling gate drivers in traction inverters. The non-F variant (ISO7041QDBQRQ1) defaults high. Both share identical pinout, isolation rating, and electrical specs.
How does ISO7041FQDBQRQ1 achieve ultra-low power consumption?
ISO7041FQDBQRQ1 uses edge-based encoding with ON-OFF keying (OOK) modulation across its SiO₂ barrier, transmitting only signal transitions - not DC states - minimizing active current. At 3.3 V, it draws just 3.5 μA per channel in quiescent mode and 115.7–138.7 μA per channel at 1 Mbps, enabling always-on monitoring in power-constrained BMS nodes.
Is ISO7041FQDBQRQ1 certified for functional safety applications?
Yes - ISO7041FQDBQRQ1 is functional safety-capable with documentation supporting ISO 26262 ASIL-B system development, including FIT rate data, failure mode analysis, and diagnostic coverage guidance. It is AEC-Q100 Grade 1 qualified and meets VDA320 isolation robustness requirements for automotive use.
What is the significance of the 3000 VRMS isolation rating for ISO7041FQDBQRQ1?
The 3000 VRMS UL 1577 isolation rating certifies that ISO7041FQDBQRQ1 provides reinforced insulation capable of withstanding 3000 V RMS for 60 seconds - sufficient for 400–800 V DC bus systems in EVs. This eliminates need for external isolation reinforcement and supports compact, high-density power module layouts.
Can ISO7041FQDBQRQ1 operate with different supply voltages on each side of the isolation barrier?
Yes - ISO7041FQDBQRQ1 supports independent VCC1 and VCC2 supplies ranging from 3.0 V to 5.5 V each. This enables seamless level shifting between 3.3 V microcontrollers and 5 V analog front-ends or gate drivers, simplifying mixed-voltage system design without external level translators.
ISO7041FQDBQRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- ISO7041-Q1
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Data Rate:
- 4Mbps
- Propagation Delay tpLH / tpHL (Max):
- 165ns, 165ns
- Pulse Width Distortion (Max):
- 10ns
- Rise / Fall Time (Typ):
- 16ns, 16ns (Max)
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
ISO7041FQDBQRQ1 FAQ
1.How can I place an order for ISO7041FQDBQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7041FQDBQRQ1 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 ISO7041FQDBQRQ1 reliable?
The price and inventory of ISO7041FQDBQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7041FQDBQRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7041FQDBQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7041FQDBQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7041FQDBQRQ1?
ISO7041FQDBQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7041FQDBQRQ1 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 ISO7041FQDBQRQ1?
For technical support, including ISO7041FQDBQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7041FQDBQRQ1 requirements.
6.How does Aetrix verify that ISO7041FQDBQRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7041FQDBQRQ1 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 ISO7041FQDBQRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7041FQDBQRQ1?
All ISO7041FQDBQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7041FQDBQRQ1, 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 ISO7041FQDBQRQ1 part is unused and in its original packaging.
Return procedure for ISO7041FQDBQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7041FQDBQRQ1 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
