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Skyworks Solutions Inc. SI8441AA-D-IS1
- Part No.:
- SI8441AA-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8441AA-D-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,480
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Product details
Overview
SI8441AA-D-IS1 from Skyworks Solutions is a quad-channel digital isolator with reinforced isolation, designed for high-noise industrial and automotive signal integrity applications. It delivers 150 Mbps data rate, <9.5 ns worst-case propagation delay, 2.5 kVRMS withstand voltage, and operates across –40°C to +125°C at 2.7–5.5 V supply. It serves as a galvanic barrier in isolated power control loops and motor gate drivers.
For engineers reviewing the SI8441AA-D-IS1 datasheet, SI8441AA-D-IS1 pinout, SI8441AA-D-IS1 application, or SI8441AA-D-IS1 equivalent, key selection criteria include its 150 Mbps capability, ultra-low 1.8 mA/3.6 mA (VDD=5 V, 1 Mbps) channel current, AEC-Q100 qualification, SOIC-16 wide-body package, and 25 kV/µs CMTI - all critical for high-reliability isolated communication in inverters and EV subsystems.
Technical Context
The SI8441AA-D-IS1 implements capacitive isolation using on-chip RF modulation/demodulation across a silicon-dioxide dielectric barrier, enabling precise timing and immunity to magnetic interference. Its four independent bidirectional channels support asymmetric supply operation (VDD1 ≠ VDD2), with enable-controlled output tri-state functionality and no start-up initialization required.
It features integrated 85 Ω output impedance per channel, 0.5 ns typical channel-to-channel skew, and 1.5 ns pulse width distortion - enabling clean signal transmission in high-speed serial interfaces such as isolated SPI, RS-485 transceiver bias control, and PWM feedback paths in isolated DC-DC converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - supports high-speed isolated SPI, CAN FD auxiliary signaling, and real-time motor control feedback. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - enables sub-10 ns timing-critical gate drive isolation in SiC/GaN power stages. |
| Isolation Withstand | 2500 VRMS for 1 minute - certified to UL 1577, CSA Component Notice 5A, and VDE IEC 60747-5-2. |
| Supply Voltage | 2.70–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Power Consumption | 1.8 mA/channel @ 1 Mbps, 5 V - reduces thermal load in densely packed industrial PLC modules. |
| CMTI | 25 kV/µs - prevents false triggering in high-dv/dt environments like IGBT/SiC half-bridges. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial motor drive ambient conditions. |
Pinout & Package
SI8441AA-D-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16), offering 8.0 mm creepage and clearance for reinforced insulation compliance. The package is RoHS-compliant and rated for 260°C lead soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for input-side logic and channel 1–2 transmitters; supports 2.7–5.5 V operation. |
| GND1 | Primary-side ground | Reference for input-side signals and VDD1; must be separated from GND2 by isolation barrier. |
| IN1, IN2 | Input channels 1–2 | Digital inputs referenced to GND1; accept 0–VDD1 logic levels with ±10 µA leakage. |
| OUT1, OUT2 | Output channels 1–2 | Isolated CMOS outputs referenced to GND2; 85 Ω nominal impedance, 4 mA sink/source capability. |
| EN1 | Enable for channels 1–2 | Active-high control: drives OUT1/OUT2 low when low; tri-states outputs when high. |
| VDD2 | Secondary-side supply | Power for output-side logic and channel 1–2 receivers; independent of VDD1. |
| GND2 | Secondary-side ground | Reference for output-side signals and VDD2; forms isolation boundary with GND1. |
| IN3, IN4 | Input channels 3–4 | Additional isolated inputs on primary side; share VDD1/GND1 domain with IN1/IN2. |
| OUT3, OUT4 | Output channels 3–4 | Isolated outputs on secondary side; functionally identical to OUT1/OUT2. |
| EN2 | Enable for channels 3–4 | Independent enable for second channel pair; allows selective isolation gating in multi-loop systems. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent, bidirectional signal paths in one SOIC-16 package - reduces BOM count vs. dual-channel alternatives. |
| AEC-Q100 Grade 1 | Qualified for automotive applications up to +125°C ambient - suitable for battery management and traction inverter subsystems. |
| No start-up initialization | Valid output within 40 µs of power application - eliminates boot-time delays in safety-critical power-on sequences. |
| Low-power operation | 1.8 mA/channel @ 1 Mbps, 5 V - enables >10-year lifetime in always-on industrial monitoring nodes. |
| High CMTI (25 kV/µs) | Immunity to fast common-mode transients in motor drives and switch-mode supplies - prevents data corruption during switching events. |
| SOIC-16 wide-body footprint | 8.0 mm creepage/clearance - meets reinforced insulation requirements for 600 VRMS working voltage per IEC 60664-1. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Gate driving for three-phase IGBT/SiC inverters in servo drives and HVAC compressors. IC Role / Device Role / Timing Role: Isolates PWM signals from MCU to gate driver ICs while preserving <10 ns timing accuracy and rejecting >20 kV/µs dv/dt noise. Use Value: Enables reliable high-frequency switching at 100+ kHz without desaturation faults or false turn-on due to ground bounce. |
Use Scenario: Feedback path isolation in isolated DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Transmits error amplifier output across isolation barrier to primary-side PWM controller with <6 ns pulse width distortion. Use Value: Maintains tight regulation bandwidth and transient response while meeting reinforced insulation safety standards. |
| Hybrid Electric Vehicle Battery Management | Isolated Data Acquisition |
Use Scenario: Cell voltage monitoring and pack-level communication in high-voltage battery packs (up to 800 V). IC Role / Device Role / Timing Role: Isolates ADC interface and CAN transceiver bias lines between high-side sensing circuitry and low-voltage MCU domain. Use Value: Provides 2500 VRMS isolation with AEC-Q100 qualification - ensures functional safety compliance in ASIL-C systems. |
Use Scenario: High-resolution isolated analog front-end in programmable logic controllers and energy meters. IC Role / Device Role / Timing Role: Isolates serial interface (SPI/I²C) between isolated ADC/DAC and host processor, supporting 150 Mbps burst reads. Use Value: Eliminates ground loop errors and enables simultaneous sampling across multiple isolated sensor channels. |
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 |
|---|---|---|---|
| ADUM140D0BRWZ | 150 Mbps, 2.5 kVRMS, SOIC-16 narrow body (4.01 mm creepage), 3.0–5.5 V supply, 1.2 mA/channel @ 1 Mbps | Limited to 600 VRMS working voltage; not AEC-Q100 qualified | Preferred where board space is constrained and automotive qualification is unnecessary. |
| ISO6741QDWR | 50 Mbps max, 5000 VRMS, SOIC-16 wide body, 1.8–5.5 V, 1.4 mA/channel @ 1 Mbps, AEC-Q100 Grade 1 | Lower speed but higher isolation rating; uses capacitive + transformer hybrid architecture | Chosen when >3.0 kVRMS surge immunity is required, e.g., in grid-tied solar inverters. |
Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8441AA-D-IS1 uniquely balances 150 Mbps speed, AEC-Q100 qualification, and 2.5 kVRMS/8.0 mm wide-body isolation - making it optimal for automotive inverter control and high-bandwidth industrial automation where both performance and safety certification are mandatory.
Availability
SI8441AA-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 support.
Supply support for SI8441AA-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 developed to replace optocouplers in high-reliability, high-speed isolation applications - targeting industrial automation, automotive electrification, and energy infrastructure where precision timing, low power, and safety certification are essential.
FAQ
What is the maximum data rate supported by the SI8441AA-D-IS1?
The SI8441AA-D-IS1 supports a maximum data rate of 150 Mbps under specified operating conditions (VDD = 5 V, TA = –40°C to +125°C). This is confirmed in Table 3 of the Skyworks datasheet Rev. 1.7 for Si844xBx variants. The SI8441AA-D-IS1 belongs to the "Bx" speed grade, distinguishing it from the 1 Mbps "Ax" variants in the same family. Performance remains stable across temperature and supply voltage ranges.
Does the SI8441AA-D-IS1 require external components for basic operation?
No, the SI8441AA-D-IS1 requires only VDD bypass capacitors (typically 0.1 µF ceramic) on each supply rail - no external resistors, transformers, or timing components are needed. This simplifies layout and reduces BOM cost versus legacy optocoupler-based isolation. The device powers up with valid outputs within 40 µs and needs no configuration or initialization sequence.
Is the SI8441AA-D-IS1 qualified for automotive applications?
Yes, the SI8441AA-D-IS1 is AEC-Q100 qualified (Grade 1, –40°C to +125°C), as explicitly stated in the Skyworks datasheet Rev. 1.7 Features section. It is approved for use in automotive subsystems including battery management systems, on-board chargers, and traction inverter control - provided system-level safety requirements (e.g., ASIL decomposition) are met through architecture design.
What isolation certifications apply to the SI8441AA-D-IS1?
The SI8441AA-D-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 SOIC-16 wide-body package variant (IS1 suffix), which provides 8.0 mm creepage and clearance. Certification documentation is maintained in Skyworks files E257455 (UL), 232873 (CSA), and 5006301-4880-0001 (VDE).
How does the enable functionality work on the SI8441AA-D-IS1?
The SI8441AA-D-IS1 has two independent enable pins (EN1 and EN2), each controlling a pair of channels. When EN1 is low, OUT1 and OUT2 are driven low; when EN1 is high, they enter high-impedance tri-state mode. Enable-to-data-valid delay is 5.0–8.0 ns (typ/max), and enable-to-tri-state delay is 7.0–9.2 ns. This allows dynamic channel gating in multi-loop control systems without affecting other isolated paths.
SI8441AA-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:
- 1000Vrms
- 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
SI8441AA-D-IS1 FAQ
1.How can I place an order for SI8441AA-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441AA-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 SI8441AA-D-IS1 reliable?
The price and inventory of SI8441AA-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 SI8441AA-D-IS1 is usually 5 days.
3.What payment methods are accepted for SI8441AA-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441AA-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441AA-D-IS1?
SI8441AA-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441AA-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 SI8441AA-D-IS1?
For technical support, including SI8441AA-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441AA-D-IS1 requirements.
6.How does Aetrix verify that SI8441AA-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8441AA-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 SI8441AA-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8441AA-D-IS1?
All SI8441AA-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8441AA-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 SI8441AA-D-IS1 part is unused and in its original packaging.
Return procedure for SI8441AA-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441AA-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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