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Skyworks Solutions Inc. SI8441AB-D-IS1
- Part No.:
- SI8441AB-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8441AB-D-IS1.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,043
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Product details
Overview
SI8441AB-D-IS1 from Skyworks Solutions is a quad-channel digital isolator with reinforced isolation, rated for 2500 VRMS, supporting up to 150 Mbps data rate, worst-case propagation delay <9.5 ns, and operation from 2.70–5.5 V across –40 to +125 °C. It serves as a high-speed signal barrier in isolated power supplies and motor control interfaces.
For engineers reviewing the SI8441AB-D-IS1 datasheet, SI8441AB-D-IS1 pinout, SI8441AB-D-IS1 application, or SI8441AB-D-IS1 equivalent, key selection criteria include its 150 Mbps capability, 0.5 ns typical channel-to-channel skew, 25 kV/µs CMTI, and SOIC-16 wide-body package with 8.0 mm creepage/clearance - critical for industrial and automotive isolation integrity.
Technical Context
The SI8441AB-D-IS1 implements capacitive isolation using differential RF signaling across an on-chip dielectric barrier, enabling robust noise immunity without magnetic or optical components. Its four independent unidirectional channels support asymmetric supply operation (VDD1 ≠ VDD2) and feature integrated enable inputs per side for output tri-state control.
It delivers precise timing performance: 1.5 ns typical pulse width distortion, 2 ns propagation delay skew, and 6 ns minimum pulse width at 150 Mbps. The device meets IEC 60747-5-2 (VDE 0884-2), UL 1577, and CSA Component Notice 5A safety standards with reinforced insulation up to 560 VPEAK working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute - enables reinforced insulation in AC/DC converters and motor drives meeting IEC 61800-5-1 |
| Max Data Rate | 150 Mbps - supports high-speed SPI, RS-485, and gate driver feedback loops without protocol bottlenecks |
| Propagation Delay | 3.0–9.5 ns - ensures sub-10 ns timing predictability for real-time control in inverters and ADC interfaces |
| Channel-Channel Skew | 0.5–1.8 ns - maintains phase alignment across all four channels for synchronized sampling or PWM distribution |
| CMTI | 25 kV/µs - rejects fast transients in noisy industrial environments such as variable-frequency drives |
| Supply Voltage Range | 2.70–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
Pinout & Package
SI8441AB-D-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage and clearance, compliant with reinforced insulation requirements for 600 VRMS working voltage per IEC 61010-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power input for input-side logic and channel drivers; accepts 2.70–5.5 V |
| GND1 | Primary-side ground | Reference return for VDD1 and input signals; must be separated from GND2 by isolation barrier |
| EN1 | Primary-side enable | Active-high control: asserts low on all primary-side outputs when deasserted |
| IN1–IN4 | Input signal terminals | Accept CMOS/LVTTL logic levels; VIH ≥2.0 V, VIL ≤0.8 V |
| VDD2 | Secondary-side supply | Independent power for output-side logic; supports asymmetrical supply configurations |
| GND2 | Secondary-side ground | Reference return for VDD2 and output signals; galvanically isolated from GND1 |
| EN2 | Secondary-side enable | Active-high control: places all secondary-side outputs in high-impedance state when deasserted |
| OUT1–OUT4 | Isolated output terminals | CMOS-compatible outputs with VOH ≥ VDD2–0.4 V, VOL ≤0.4 V at 4 mA load |
Key Features
| Feature | Design Value |
|---|---|
| Quad unidirectional channels | Four independent isolation paths optimized for signal directionality - eliminates bidirectional contention in gate drive or sensor readout |
| Enable-controlled tri-state outputs | Dual enable pins (EN1/EN2) allow dynamic output disabling on either side - essential for bus arbitration and hot-swap systems |
| Ultra-low power at 100 Mbps | 8.0 mA (VDD1) + 19.8 mA (VDD2) at 5 V - reduces thermal load in compact isolated DC-DC modules |
| High CMTI (25 kV/µs) | Rejects fast common-mode transients induced by IGBT switching - prevents false triggering in motor control PCBs |
| AEC-Q100 qualified | Grade 1 temperature range (–40 to +125 °C) and stress testing validated for automotive subsystems |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Isolating PWM signals from MCU to three-phase gate drivers in servo inverters. IC Role / Device Role / Timing Role: Quad-channel digital isolator transmitting complementary high-side/low-side gate signals with matched propagation delay. Use Value: 0.5 ns channel-to-channel skew ensures simultaneous FET switching, minimizing shoot-through risk in 20 kHz+ inverters. | Use Scenario: Providing feedback isolation for voltage/current sensing in 1 kW LLC resonant converters. IC Role / Device Role / Timing Role: Transmitting analog-to-digital converter (ADC) output bits across isolation barrier to controller side. Use Value: 150 Mbps data rate supports 16-bit ADC oversampling at >1 MSPS without serialization overhead. |
| Hybrid Electric Vehicle Battery Management | Industrial Automation I/O Module |
Use Scenario: Isolating cell voltage monitoring data from high-voltage battery stack to low-voltage MCU in BMS. IC Role / Device Role / Timing Role: Reliable serial data transmission across 400–800 V DC barriers with reinforced insulation integrity. Use Value: 2500 VRMS rating and 60-year lifetime at rated voltage meet ASIL-B functional safety requirements. | Use Scenario: Digitally isolating fieldbus interface (e.g., RS-485) and PLC digital I/O lines in factory-floor controllers. IC Role / Device Role / Timing Role: Protecting controller logic from ground loop noise and surge events on long cable runs. Use Value: 25 kV/µs CMTI and 8.0 mm creepage prevent communication errors during ESD or lightning-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRWZ | Quad unidirectional, 150 Mbps, 2500 VRMS, SOIC-16 wide body, but higher 100 Mbps supply current (12.5 mA/VDD) | Lacks AEC-Q100 qualification; not recommended for automotive BMS or inverter control | Preferred where lower CMTI (100 kV/µs) suffices and ADI ecosystem integration is prioritized |
| ISO6741QDWR | Quad unidirectional, 50 Mbps max, 5000 VRMS, SOIC-16 wide body, 2.25–5.5 V supply | Lower speed limits use in high-bandwidth ADC links or fast PWM; higher isolation voltage suits medical equipment | Select when 5000 VRMS test voltage is mandatory and 150 Mbps is unnecessary |
Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8441AB-D-IS1 uniquely balances 150 Mbps speed, AEC-Q100 qualification, and 25 kV/µs CMTI in a single SOIC-16 wide-body package - making it optimal for automotive-grade motor control and high-density industrial power systems requiring both speed and ruggedness.
Availability
SI8441AB-D-IS1 is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle battery management, and isolated switch-mode power supply designs requiring stable component supply and long-term lifecycle assurance.
Supply support for SI8441AB-D-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 harsh environments - targeting industrial automation, automotive electrification, and energy infrastructure applications demanding safety certification and long-term stability.
FAQ
What is the maximum data rate supported by SI8441AB-D-IS1?
The SI8441AB-D-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 Skyworks datasheet Rev. 1.7 for Si844xBx variants, which includes SI8441AB-D-IS1. Performance remains stable across the full temperature and supply range.
Does SI8441AB-D-IS1 support independent supply voltages on each side?
Yes, SI8441AB-D-IS1 supports independent VDD1 and VDD2 supplies ranging from 2.70 V to 5.5 V each. This allows interfacing between 3.3 V microcontrollers and 5 V analog circuits without level shifters. Electrical characteristics in Tables 3–5 explicitly validate operation with mismatched rail voltages.
What safety certifications apply to SI8441AB-D-IS1?
SI8441AB-D-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (reinforced insulation). These are documented in Tables 6 and 7 of the datasheet, with production testing to 3000 VRMS for 1 second per regulatory requirement.
Is SI8441AB-D-IS1 pin-compatible with other Si844x variants?
SI8441AB-D-IS1 shares the same WB-SOIC-16 pinout and footprint with all Si8440/41/42/45 devices in the family, including SI8441BB-D-IS1 and SI8442AB-D-IS1. Pin functions (IN/OUT/EN/VDD/GND) and spacing are identical, enabling layout reuse across speed grades and channel configurations.
What is the typical channel-to-channel skew of SI8441AB-D-IS1?
The typical channel-to-channel skew of SI8441AB-D-IS1 is 0.5 ns, with a maximum of 1.8 ns over temperature and voltage, as specified in Table 3 for Si844xBx devices. This tight skew enables synchronous multi-channel data transfer in time-critical applications like motor phase current sampling.
SI8441AB-D-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-D-IS1 FAQ
1.How can I place an order for SI8441AB-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441AB-D-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-D-IS1 reliable?
The price and inventory of SI8441AB-D-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-D-IS1 is usually 5 days.
3.What payment methods are accepted for SI8441AB-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441AB-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441AB-D-IS1?
SI8441AB-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441AB-D-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-D-IS1?
For technical support, including SI8441AB-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441AB-D-IS1 requirements.
6.How does Aetrix verify that SI8441AB-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8441AB-D-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-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8441AB-D-IS1?
All SI8441AB-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8441AB-D-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-D-IS1 part is unused and in its original packaging.
Return procedure for SI8441AB-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441AB-D-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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