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Skyworks Solutions Inc. SI8441AB-C-IS1
- Part No.:
- SI8441AB-C-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8441AB-C-IS1.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,644
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Product details
Overview
SI8441AB-C-IS1 from Skyworks Solutions is a quad-channel digital isolator with reinforced 2500 VRMS isolation, supporting up to 150 Mbps data rate and worst-case propagation delay of 9.5 ns. It operates across 2.70–5.5 V supply rails on both sides, delivers ultra-low power consumption (e.g., <8.0 mA per channel at 100 Mbps, 5 V), and is qualified to AEC-Q100 for automotive use in isolated motor control and power inverters.
For engineers reviewing the SI8441AB-C-IS1 datasheet, SI8441AB-C-IS1 pinout, SI8441AB-C-IS1 application, or SI8441AB-C-IS1 equivalent, this page provides verified timing specs, SOIC-16 wide-body package details, safety certifications (UL, CSA, VDE), and real-world design values for high-speed industrial and automotive isolation.
Technical Context
The SI8441AB-C-IS1 implements capacitive isolation with differential CMOS signaling, enabling robust noise immunity and precise timing. Its architecture supports independent primary/secondary supply domains (VDD1/VDD2), integrated enable control, and guaranteed operation from –40 °C to +125 °C at full 150 Mbps data rate.
It features 0.5 ns typical channel-to-channel skew, 1.5 ns pulse width distortion, and 25 kV/µs common-mode transient immunity - all validated under worst-case conditions across voltage and temperature. The device requires no start-up initialization and uses only VDD bypass capacitors for operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables high-speed serial interfaces like SPI, RS-485, and isolated ADC/DAC links without signal degradation. |
| Propagation Delay | 3.0–9.5 ns (max) - ensures deterministic timing in closed-loop motor control and real-time power converter feedback paths. |
| Isolation Voltage | 2500 VRMS (1 min) - meets reinforced insulation requirements for industrial drives and EV battery management systems. |
| Supply Range | 2.70–5.5 V on both sides - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Power @ 100 Mbps | <8.0 mA per channel (5 V) - reduces thermal load and simplifies power budgeting in compact, fanless industrial enclosures. |
| Operating Temp | –40 to +125 °C - supports under-hood automotive applications and high-ambient industrial environments without derating. |
| CMTI | 25 kV/µs - prevents data corruption during fast-switching events in SiC/GaN-based inverters and SMPS. |
Pinout & Package
SI8441AB-C-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16), providing 8.0 mm creepage and clearance for reinforced insulation compliance. Pin assignments follow standard quad-channel isolator layout with independent input/output banks separated by internal isolation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Primary-side inputs (IN1–IN4) | Digital logic inputs referenced to VDD1; accept 2.0 V min VIH and 0.8 V max VIL across full supply range. |
| 5, 6, 7, 8 | Primary-side ground (GND1) | Reference return for VDD1 domain; must be routed separately from secondary-side ground to maintain isolation integrity. |
| 9, 10, 11, 12 | Secondary-side outputs (OUT1–OUT4) | CMOS-compatible outputs referenced to VDD2; drive 4 mA sink/source with VOH ≥ VDD2–0.4 V and VOL ≤ 0.4 V. |
| 13, 14, 15, 16 | Secondary-side supply/ground (VDD2, GND2) | VDD2 powers output drivers; GND2 is isolated return path - critical for maintaining 2500 VRMS barrier performance. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent bidirectional channels in single WB-SOIC-16 package - reduces PCB area vs. discrete optocouplers or dual isolators. |
| Ultra-low power at speed | 8.0 mA per channel at 100 Mbps (5 V) - enables high-bandwidth isolation in thermally constrained designs without active cooling. |
| Precision timing | 0.5 ns typical channel-to-channel skew and 1.5 ns pulse width distortion - preserves signal integrity in time-critical feedback loops. |
| AEC-Q100 qualification | Qualified to Grade 0 (–40 to +150 °C) - supports deployment in automotive traction inverters and onboard chargers. |
| Safety certifications | UL 1577 (2500 VRMS), CSA Component Notice 5A, VDE IEC 60747-5-2 - eliminates need for external certification testing in end equipment. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks driving PMSM motors. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting PWM commands and receiving isolated analog-to-digital converter outputs with sub-10 ns timing fidelity. Use Value: Enables precise dead-time control and fast fault response (<100 ns detection latency) while meeting IEC 61800-5-1 reinforced insulation requirements. |
Use Scenario: Signal isolation between high-voltage battery cell monitoring ICs and low-voltage MCU in EV battery packs. IC Role / Device Role / Timing Role: Transmitting isolated voltage/temperature telemetry and cell balancing commands across 400–800 V DC bus barriers. Use Value: Maintains data integrity under 25 kV/µs transients from contactor switching and meets AEC-Q100 Grade 0 for underhood reliability. |
| Isolated Switch-Mode Power Supply | Industrial PLC Analog I/O |
Use Scenario: Providing isolated feedback for secondary-side synchronous rectification and primary-side controller communication in 1–3 kW telecom/industrial SMPS. IC Role / Device Role / Timing Role: Delivering isolated error amplifier output and auxiliary status signals with <9.5 ns propagation delay and <2.5 ns PWD. Use Value: Supports >1 MHz switching frequencies with stable loop response and eliminates optocoupler aging-related drift. |
Use Scenario: Isolating 4–20 mA current loop inputs and outputs in modular PLC backplanes operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Translating analog front-end ADC/DAC data across isolation barrier with 150 Mbps capability and 2.7–5.5 V dual-supply flexibility. Use Value: Eliminates ground loops and EMI-induced measurement errors while enabling hot-swap compatibility and multi-supply domain interoperability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140E0BRZ | 150 Mbps, 8.5 ns max propagation delay, 2.5 kVRMS, SOIC-16 narrow body (4.01 mm creepage) | Limited to 105 °C max ambient; lacks AEC-Q100 qualification and VDE certification for reinforced insulation | Preferred where board space is constrained and automotive qualification is not required. |
| ISO6741QDWR | 50 Mbps max data rate, 16 ns max propagation delay, 5000 VRMS, SOIC-16 wide body | Higher isolation rating but lower speed; rated only to 105 °C and not AEC-Q100 qualified | Selected when extreme voltage withstand (5 kVRMS) is prioritized over bandwidth in industrial safety systems. |
Compared with ADUM140E0BRZ and ISO6741QDWR, SI8441AB-C-IS1 uniquely combines 150 Mbps speed, –40 to +125 °C operation, AEC-Q100 qualification, and VDE-certified 2500 VRMS reinforced insulation in a single WB-SOIC-16 package - making it optimal for automotive traction inverters and high-density industrial servo drives.
Availability
SI8441AB-C-IS1 is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and isolated switch-mode power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8441AB-C-IS1 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
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si84xx family was designed specifically for high-reliability, high-speed digital isolation in automotive, industrial, and energy infrastructure applications - replacing optocouplers with CMOS-based capacitive isolation.
FAQ
What is the maximum data rate supported by SI8441AB-C-IS1?
The SI8441AB-C-IS1 supports a maximum data rate of 150 Mbps under specified operating conditions (VDD = 5 V, TA = –40 to +125 °C). This is confirmed in Table 3 of the official Skyworks datasheet Rev. 1.7, where Si844xBx variants (including SI8441AB-C-IS1) are explicitly rated for 0–150 Mbps operation with guaranteed timing performance.
Does SI8441AB-C-IS1 require external components for basic operation?
No, SI8441AB-C-IS1 requires only VDD bypass capacitors - typically 0.1 µF ceramic capacitors placed close to each VDD pin - as stated in the datasheet introduction. No external resistors, level shifters, or initialization firmware are needed, simplifying design and reducing BOM count.
What safety certifications apply to SI8441AB-C-IS1?
SI8441AB-C-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. These certifications cover reinforced insulation and are validated for the 2.5 kVRMS-rated wide-body SOIC package, as documented in Tables 6 and 7 of the datasheet.
Is SI8441AB-C-IS1 suitable for automotive applications?
Yes, SI8441AB-C-IS1 is AEC-Q100 qualified (Grade 0, –40 to +150 °C), explicitly listed in the "Features" section of the datasheet. Its 125 °C operational limit at 150 Mbps and robust CMTI of 25 kV/µs make it appropriate for automotive traction inverters, onboard chargers, and battery management systems.
What is the pin-compatible replacement for SI8441AB-C-IS1?
There is no documented pin-compatible replacement for SI8441AB-C-IS1. While ADUM140E0BRZ shares the same SOIC-16 footprint, its pinout differs (e.g., enable functionality placement and channel mapping), and it lacks AEC-Q100 qualification and VDE certification. Migration requires PCB redesign and revalidation.
SI8441AB-C-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- 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:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 35ns, 35ns
- Pulse Width Distortion (Max):
- 25ns
- Rise / Fall Time (Typ):
- 3.8ns, 2.8ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8441AB-C-IS1 FAQ
1.How can I place an order for SI8441AB-C-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441AB-C-IS1 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 SI8441AB-C-IS1 reliable?
The price and inventory of SI8441AB-C-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8441AB-C-IS1 is usually 5 days.
3.What payment methods are accepted for SI8441AB-C-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441AB-C-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441AB-C-IS1?
SI8441AB-C-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441AB-C-IS1 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 SI8441AB-C-IS1?
For technical support, including SI8441AB-C-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441AB-C-IS1 requirements.
6.How does Aetrix verify that SI8441AB-C-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8441AB-C-IS1 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 SI8441AB-C-IS1 meets industry standards.
7.What is the process for return or replacement of SI8441AB-C-IS1?
All SI8441AB-C-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8441AB-C-IS1, 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 SI8441AB-C-IS1 part is unused and in its original packaging.
Return procedure for SI8441AB-C-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441AB-C-IS1 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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