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Skyworks Solutions Inc. SI8441BA-C-IS1
- Part No.:
- SI8441BA-C-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8441BA-C-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,276
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Product details
Overview
SI8441BA-C-IS1 from Skyworks Solutions is a quad-channel digital isolator with reinforced isolation, designed for high-noise industrial and automotive signal interfaces. It delivers 150 Mbps data rate, <9.5 ns worst-case propagation delay, and operates across –40 to +125 °C at 2.7–5.5 V supply. It supports isolated ADC/DAC, motor control, and switch-mode power supplies.
For engineers reviewing the SI8441BA-C-IS1 datasheet, SI8441BA-C-IS1 pinout, SI8441BA-C-IS1 application, or SI8441BA-C-IS1 equivalent, this page provides verified timing specs, SOIC-16 wide-body package details, safety certifications (UL, CSA, VDE), and real-world substitution guidance for legacy design continuity.
Technical Context
The SI8441BA-C-IS1 implements capacitive isolation with on-chip RF modulation/demodulation, enabling DC-to-150 Mbps operation without start-up initialization. Its dual-die architecture separates input and output domains, supporting independent VDD1/VDD2 supplies (2.7–5.5 V each) and delivering 25 kV/µs common-mode transient immunity.
It features an enable pin (ENx) that places outputs in high-impedance state when asserted low, with 5–8 ns enable-to-data-valid latency. Timing precision includes ≤1.5 ns pulse width distortion and ≤0.5 ns channel-channel skew-critical for synchronous multi-channel systems like isolated gate drivers or encoder interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - supports high-speed serial links (e.g., isolated SPI, RS-485 transceivers) |
| Propagation Delay | 3.0–9.5 ns - enables tight-timing control loops in motor drives and power inverters |
| Supply Voltage Range | 2.70–5.5 V per side - interoperable with 3.3 V and 5 V logic domains without level shifters |
| Isolation Rating | 2500 VRMS (1 min) - certified for reinforced insulation per UL 1577, CSA 5A, and VDE 0884-2 |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| Power Consumption | <8.0 mA per channel at 100 Mbps (5 V) - reduces thermal load in densely packed isolated subsystems |
| CMTI | 25 kV/µs - maintains signal integrity during fast-switching events in SiC/GaN power stages |
Pinout & Package
SI8441BA-C-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16), with creepage/clearance of 8.0 mm and reinforced insulation rated for 2500 VRMS. The package meets RoHS requirements and supports standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies input-side logic and isolation transmitter; accepts 2.7–5.5 V |
| GND1 | Primary-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| IN1–IN4 | Digital input channels | Accept CMOS/TTL-compatible signals; no external pull-ups required |
| EN1–EN4 | Channel enable inputs | Active-low control: drives corresponding OUTx to high-Z when low |
| VDD2 | Secondary-side power supply | Supplies output-side logic and isolation receiver; independent of VDD1 |
| GND2 | Secondary-side ground reference | Return path for VDD2; galvanically isolated from GND1 |
| OUT1–OUT4 | Digital output channels | CMOS outputs with 85 Ω nominal impedance; drive 15 pF loads at full data rate |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power at high speed | 8.0 mA per channel at 100 Mbps (5 V) - cuts isolation domain power by >40% vs. optocouplers |
| Precision timing | ≤0.5 ns channel-channel skew - ensures deterministic sampling in multi-sensor feedback systems |
| No start-up delay | Valid output within 40 µs of power application - eliminates boot-time synchronization issues |
| High CMTI immunity | 25 kV/µs - prevents false triggering in high-dV/dt environments (e.g., IGBT/SiC gate drivers) |
| AEC-Q100 qualified | Grade 1 (–40 to +125 °C) - validated for automotive powertrain and chassis applications |
Applications
| Isolated Motor Control | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Isolating PWM gate-drive signals and current-sense feedback between MCU and 3-phase inverter stage. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting four independent PWM or analog feedback paths across isolation barrier. Use Value: Enables precise, skew-controlled timing for field-oriented control (FOC) while blocking 1000+ V common-mode transients. | Use Scenario: Digitally isolating discrete input/output signals between PLC backplane and field devices (sensors, actuators). IC Role / Device Role / Timing Role: Providing four bidirectional or unidirectional isolation channels for status reporting and command execution. Use Value: Eliminates ground loops and noise coupling in factory-floor automation, supporting 24 V DC field-side interfacing. |
| Isolated Switch-Mode Power Supply | Automotive Battery Management System |
Use Scenario: Isolating voltage/current telemetry and fault signals from secondary-side controller to primary-side MCU in AC/DC or DC/DC converters. IC Role / Device Role / Timing Role: Transmitting analog feedback (via isolated ADC interface) and digital fault flags across high-voltage barrier. Use Value: Maintains safety compliance (reinforced insulation) while enabling real-time regulation at up to 150 Mbps update rates. | Use Scenario: Isolating cell voltage monitoring and balancing commands between BMS controller and high-voltage battery stack (400–800 V). IC Role / Device Role / Timing Role: Delivering time-aligned voltage readings and balancing enable signals across multiple series-connected modules. Use Value: Meets AEC-Q100 Grade 1 and 2500 VRMS isolation requirements for EV traction battery systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16 narrow body; higher 100 Mbps supply current (12.5 mA/ch) | Lacks AEC-Q100 qualification; narrower creepage (4.01 mm) limits use in high-pollution industrial zones | Prefer for cost-sensitive non-automotive designs where PCB space is constrained |
| ISO6741QDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16 wide body; lower max data rate but higher isolation rating | Qualified to AEC-Q100 Grade 0 (–40 to +150 °C); suited for ultra-high-reliability under-hood placement | Choose when 50 Mbps suffices and 5 kVRMS working voltage is mandated by system safety architecture |
Compared with ADUM140D0BRIZ and ISO6741QDWR, the SI8441BA-C-IS1 uniquely balances 150 Mbps speed, AEC-Q100 Grade 1 qualification, and 2500 VRMS reinforced insulation in a wide-body SOIC-making it optimal for automotive motor control and industrial servo drives where timing precision and thermal robustness are co-critical.
Availability
SI8441BA-C-IS1 is available at Aetrix Electronics and suitable for industrial automation systems, hybrid electric vehicles, and isolated switch mode supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8441BA-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 engineered for high-reliability signal isolation in harsh environments-targeting automotive powertrain, industrial motor control, and energy infrastructure where safety certification, timing accuracy, and thermal resilience are mandatory.
FAQ
What is the maximum data rate supported by the SI8441BA-C-IS1?
The SI8441BA-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 SI8441BA-C-IS1-are explicitly rated for 0–150 Mbps operation with 6 ns minimum pulse width.
Does the SI8441BA-C-IS1 require external start-up initialization?
No, the SI8441BA-C-IS1 requires no start-up initialization. Valid output data is available within 40 µs of power application, as specified in the "Start-up Time" parameter (tSU = 15–40 µs) in Tables 3–5 of the Skyworks datasheet. This enables immediate functionality after power-on without firmware overhead.
What safety certifications apply to the SI8441BA-C-IS1?
The SI8441BA-C-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (VDE 0884-2). These approvals cover reinforced insulation and are documented in Tables 6 and 7 of the Skyworks datasheet Rev. 1.7, with production testing at 3000 VRMS for 1 second.
Is the SI8441BA-C-IS1 pin-compatible with other Si844x variants?
Yes, the SI8441BA-C-IS1 shares identical pinout and package (WB-SOIC-16) with all Si8440/41/42/45 family members. Pin functions-including IN1–IN4, EN1–EN4, OUT1–OUT4, VDD1/GND1, and VDD2/GND2-are consistent across variants, enabling drop-in replacement where timing and channel count align.
What is the operating temperature range for the SI8441BA-C-IS1 at full 150 Mbps data rate?
The SI8441BA-C-IS1 operates from –40 to +125 °C at full 150 Mbps data rate, as confirmed in Table 1 (Recommended Operating Conditions) and Table 3 (Electrical Characteristics) of the Skyworks datasheet Rev. 1.7. This rating applies to both wide- and narrow-body SOIC packages under 5 V supply and 15 pF load conditions.
SI8441BA-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:
- 1000Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.5ns, 9.5ns
- Pulse Width Distortion (Max):
- 2.5ns
- 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
SI8441BA-C-IS1 FAQ
1.How can I place an order for SI8441BA-C-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441BA-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 SI8441BA-C-IS1 reliable?
The price and inventory of SI8441BA-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 SI8441BA-C-IS1 is usually 5 days.
3.What payment methods are accepted for SI8441BA-C-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441BA-C-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441BA-C-IS1?
SI8441BA-C-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441BA-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 SI8441BA-C-IS1?
For technical support, including SI8441BA-C-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441BA-C-IS1 requirements.
6.How does Aetrix verify that SI8441BA-C-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8441BA-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 SI8441BA-C-IS1 meets industry standards.
7.What is the process for return or replacement of SI8441BA-C-IS1?
All SI8441BA-C-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8441BA-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 SI8441BA-C-IS1 part is unused and in its original packaging.
Return procedure for SI8441BA-C-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441BA-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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