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Skyworks Solutions Inc. SI8441AB-C-IS
- Part No.:
- SI8441AB-C-IS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8441AB-C-IS.pdf
- Description:
- DIGITAL ISOLATOR 4CH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,409
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Product details
Overview
SI8441AB-C-IS from Skyworks Solutions is a quad-channel, ultra-low-power digital isolator in a 16-pin wide-body SOIC package, supporting up to 150 Mbps data rate with worst-case propagation delay <9.5 ns, 0.5 ns channel-channel skew, and 25 kV/µs CMTI - deployed in isolated ADC interfaces and motor control gate drivers requiring reinforced insulation.
For engineers reviewing the SI8441AB-C-IS datasheet, SI8441AB-C-IS pinout, SI8441AB-C-IS application, or SI8441AB-C-IS equivalent, this page delivers verified timing specs, safety certifications (UL 1577, VDE 0884-2, CSA 5A), supply current at 2.7–5.5 V, and precise pin-level functional roles for layout-critical isolation design.
Technical Context
The SI8441AB-C-IS implements capacitive isolation with on-chip RF modulation/demodulation across four independent channels, enabling DC-to-150 Mbps signal transfer without start-up initialization. Its dual-supply architecture (VDD1/VDD2) supports asymmetric voltage operation (2.7–5.5 V each) and maintains stable timing over –40°C to +125°C.
Each channel features an enable input (ENx) controlling output tri-state behavior with 5–8 ns enable-to-data-valid latency, while output impedance is fixed at ~85 Ω ±40% for controlled-impedance PCB routing. The device achieves 2500 VRMS reinforced insulation per UL/VDE/CSA standards with 60-year lifetime at rated working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables high-speed serial communication in isolated power converters and industrial Ethernet PHY interfaces. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns timing accuracy critical for synchronous motor control and real-time feedback loops. |
| Channel-Channel Skew | 0.5–1.8 ns (typ/max) - guarantees tight inter-channel synchronization for multi-phase PWM gate drive signals. |
| Supply Voltage Range | 2.70–5.5 V per side - supports interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| CMTI | 25 kV/µs - suppresses noise-induced false triggering in high-dV/dt environments like IGBT inverters and SMPS. |
| Isolation Rating | 2500 VRMS (1 min) - meets reinforced insulation requirements for industrial safety standards (IEC 61010-1, IEC 60747-5-2). |
| Power Consumption | <8.0 mA per channel at 100 Mbps / 5 V - reduces thermal load in densely packed isolated power modules. |
Pinout & Package
SI8441AB-C-IS uses a 16-pin wide-body SOIC package (package outline per Skyworks Doc #28) with creepage/clearance ≥8.0 mm and reinforced insulation barrier between pins 1–8 (side 1) and pins 9–16 (side 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for input-side logic and channel 1–4 receivers; must be bypassed with 0.1 µF capacitor near pin. |
| GND1 | Primary-side ground | Reference for side 1 inputs and internal circuitry; separate from GND2 to maintain isolation barrier integrity. |
| IN1–IN4 | Input signal terminals | Digital inputs referenced to VDD1/GND1; accept 2.0–5.5 V logic levels with ±10 µA leakage. |
| EN1–EN4 | Channel enable inputs | Active-high enables; outputs go high-impedance when low, with 5–8 ns enable-to-data-valid latency. |
| VDD2 | Secondary-side supply | Power for output-side logic and channel 1–4 drivers; independent voltage domain from VDD1. |
| GND2 | Secondary-side ground | Reference for side 2 outputs; galvanically isolated from GND1 to prevent ground loop currents. |
| OUT1–OUT4 | Isolated output terminals | CMOS-compatible outputs (VOH ≥ VDD2–0.4 V, VOL ≤ 0.4 V) with ~85 Ω source impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent bidirectional-capable channels in single SOIC-16 package reduce board space vs. discrete optocouplers. |
| No start-up initialization | Outputs become valid within 15–40 µs of power application - eliminates boot-time delays in safety-critical systems. |
| Precision timing | 1.5 ns pulse width distortion and 2 ns propagation delay skew enable deterministic timing in servo drives. |
| AEC-Q100 qualified | Qualified for automotive applications including hybrid EV battery management and onboard chargers. |
| RoHS-compliant wide-body SOIC | Meets IPC/JEDEC J-STD-020 moisture sensitivity level 3; compatible with standard reflow profiles. |
Applications
| Industrial Motor Control | Isolated ADC Interface |
|---|---|
Use Scenario: Isolating PWM gate drive signals between MCU and three-phase IGBT inverter stages. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting synchronized PWM edges with <1.8 ns channel skew to prevent shoot-through. Use Value: Enables precise dead-time control and eliminates ground bounce errors in 20 kHz+ switching inverters. |
Use Scenario: Bridging SPI interface between isolated 24-bit sigma-delta ADC and host processor in energy metering. IC Role / Device Role / Timing Role: Transmitting high-speed serial clock and data across isolation barrier with 150 Mbps capability and <9.5 ns delay. Use Value: Preserves ADC resolution by eliminating jitter-induced sampling uncertainty in Class 0.2 metering. |
| Hybrid Electric Vehicle BMS | Isolated Switch-Mode Power Supply |
Use Scenario: Level-shifting cell voltage monitoring signals from high-voltage battery stack to low-voltage MCU. IC Role / Device Role / Timing Role: Providing reinforced 2500 VRMS isolation for 400–800 VDC battery domains per IEC 61000-4-5. Use Value: Meets AEC-Q100 Grade 0 (–40°C to +125°C) and 60-year lifetime requirement for automotive safety systems. |
Use Scenario: Isolating feedback signals (voltage/current sense) from secondary side to primary-side PWM controller. IC Role / Device Role / Timing Role: Replacing optocouplers with faster, more stable timing for adaptive loop compensation in LLC resonant converters. Use Value: Improves transient response by reducing feedback delay from >1 µs (opto) to <10 ns, enabling >500 kHz switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRWZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16 wide body; higher typical supply current (10.2 mA @ 100 Mbps / 5 V) vs. SI8441AB-C-IS (8.0 mA). | Same reinforced insulation rating but lower CMTI (15 kV/µs); less suitable for high-dV/dt IGBT gate drive. | Prefer SI8441AB-C-IS where CMTI >20 kV/µs and low power are mandatory. |
| ISO6741QDWR | 4-channel, 50 Mbps max, 5000 VRMS, SOIC-16 wide body; slower speed but higher isolation voltage and AEC-Q100 Grade 1 rating. | Targeted at automotive powertrain where 5 kVRMS withstand is required; not suitable for 150 Mbps data links. | Choose ISO6741QDWR only when 5 kVRMS test voltage is mandated and data rate ≤50 Mbps suffices. |
Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8441AB-C-IS uniquely balances 150 Mbps speed, 25 kV/µs CMTI, and ultra-low power in a production-qualified wide-body SOIC - making it optimal for high-efficiency, high-noise industrial and automotive isolation where timing precision and EMI resilience are non-negotiable.
Availability
SI8441AB-C-IS is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle battery management, and isolated switch-mode power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8441AB-C-IS 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 engineered to replace optocouplers in high-reliability industrial and automotive systems, delivering superior speed, longevity, and temperature stability through capacitive isolation architecture.
FAQ
What is the maximum data rate supported by SI8441AB-C-IS?
The SI8441AB-C-IS supports a maximum data rate of 150 Mbps under specified conditions (VDD = 5 V, TA = –40°C to +125°C). This performance is guaranteed across the full operating temperature range and enables use in high-speed isolated communication links such as SPI, RS-485 transceiver control, and digital power management interfaces. SI8441AB-C-IS achieves this without compromising propagation delay or skew specifications.
Does SI8441AB-C-IS require external components for basic operation?
No, SI8441AB-C-IS requires only VDD bypass capacitors (0.1 µF ceramic per supply rail) for stable operation - no external resistors, transformers, or level shifters are needed. Its integrated capacitive isolation architecture eliminates start-up initialization, allowing immediate data transmission after power-on. This simplifies BOM and improves system reliability compared to optocoupler-based solutions.
What safety certifications apply to SI8441AB-C-IS?
SI8441AB-C-IS is certified to UL 1577 (2500 VRMS, 1 min), VDE 0884-2 (IEC 60747-5-2), and CSA Component Acceptance Notice 5A (IEC 61010-1, 60950-1). These approvals confirm reinforced insulation suitability for industrial and automotive applications, with validated clearance/creepage ≥8.0 mm in the wide-body SOIC package and 60-year lifetime at rated working voltage.
How does the enable function operate on SI8441AB-C-IS?
Each channel of SI8441AB-C-IS has a dedicated enable input (EN1–EN4). When ENx is high, the corresponding OUTx reflects the isolated INx signal; when ENx is low, OUTx enters high-impedance state. Enable-to-data-valid latency is 5.0–8.0 ns, and enable-to-tri-state is 7.0–9.2 ns - enabling fast dynamic channel gating in multiplexed isolation architectures without timing uncertainty.
Is SI8441AB-C-IS suitable for automotive applications?
Yes, SI8441AB-C-IS is AEC-Q100 qualified (Grade 0: –40°C to +125°C) and used in hybrid electric vehicle subsystems including battery management systems and onboard chargers. Its 2500 VRMS isolation, 25 kV/µs CMTI, and 60-year lifetime meet stringent automotive safety and reliability requirements, and its wide supply range (2.7–5.5 V) supports direct integration with 3.3 V MCUs and 5 V sensor interfaces.
SI8441AB-C-IS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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-IS FAQ
1.How can I place an order for SI8441AB-C-IS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441AB-C-IS 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-IS reliable?
The price and inventory of SI8441AB-C-IS 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-IS is usually 5 days.
3.What payment methods are accepted for SI8441AB-C-IS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441AB-C-IS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441AB-C-IS?
SI8441AB-C-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441AB-C-IS 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-IS?
For technical support, including SI8441AB-C-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441AB-C-IS requirements.
6.How does Aetrix verify that SI8441AB-C-IS is sourced from the original manufacturer or authorized distributors?
All SI8441AB-C-IS 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-IS meets industry standards.
7.What is the process for return or replacement of SI8441AB-C-IS?
All SI8441AB-C-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI8441AB-C-IS, 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-IS part is unused and in its original packaging.
Return procedure for SI8441AB-C-IS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441AB-C-IS 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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