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Skyworks Solutions Inc. SI8441AA-C-IS1

Name: SI8441AA-C-IS1
Brand: Skyworks Solutions Inc.
SKU: SI8441AA-C-IS1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI8441AA-C-IS1

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: SI8441AA-C-IS1.pdf

Description:: DGTL ISO 1000VRMS 4CH GP 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI8441AA-C-IS1 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 common-mode transient immunity. It operates across 2.70–5.5 V supply rails and delivers <8.0 mA per channel at 100 Mbps (5 V), enabling high-speed isolated communication in motor control and industrial power systems.

For engineers reviewing the SI8441AA-C-IS1 datasheet, SI8441AA-C-IS1 pinout, SI8441AA-C-IS1 application, or SI8441AA-C-IS1 equivalent, this device serves as a reinforced-isolation solution for bidirectional signal transfer across galvanic barriers where timing precision, low power, and AEC-Q100 qualification are critical - especially in isolated ADC interfaces, switch-mode power supplies, and hybrid electric vehicle subsystems.

Technical Context

The SI8441AA-C-IS1 implements capacitive isolation with on-chip RF modulation/demodulation circuitry, delivering deterministic timing without start-up initialization. Its dual-supply architecture (VDD1/VDD2) supports independent 2.70–5.5 V operation on each side, enabling level-shifting between 3.3 V and 5 V domains while maintaining 2500 VRMS isolation rating.

It features an enable input (ENx) that places outputs in high-impedance state within 9.2 ns, supporting bus arbitration and dynamic power management. All four channels are fully functional with identical timing specs: 6 ns minimum pulse width, 1.5 ns typical pulse width distortion, and 2 ns propagation delay skew - verified across –40 to +125 °C at 150 Mbps.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 150 Mbps - supports high-speed serial interfaces like SPI, RS-485 transceiver control, and isolated gate driver feedback loops.
Propagation Delay	3.0–9.5 ns - ensures sub-10 ns latency for real-time control in motor drives and power inverters.
Channel-Channel Skew	0.5 ns max - enables precise synchronization of multiple isolated signals (e.g., PWM pairs in three-phase inverters).
Supply Current @ 100 Mbps	<10 mA per channel at 5 V - reduces thermal load and simplifies power budgeting in compact industrial modules.
Isolation Voltage	2500 VRMS (1 min) - certified to UL 1577, CSA Component Notice 5A, and VDE IEC 60747-5-2 for reinforced insulation.
Common-Mode Transient Immunity	25 kV/µs - maintains signal integrity in noisy environments such as variable-frequency drives and EV battery management systems.
Operating Temperature	–40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions at full data rate.

Pinout & Package

SI8441AA-C-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage/clearance, optimized for 2500 VRMS reinforced insulation. Pin numbering follows standard SOIC convention (pin 1 = top-left corner, notch indicator).

Pin/Terminal	Circuit Role	Design Meaning
VDD1	Primary-side supply	Power for input-side logic and channel 1–2 drivers; accepts 2.70–5.5 V independently of VDD2.
GND1	Primary-side ground	Reference for inputs and channel 1–2 outputs; must be separated from GND2 by isolation barrier.
IN1, IN2	Input signals (side 1)	Digital inputs referenced to GND1; compatible with CMOS/LVTTL logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V).
EN1, EN2	Enable controls (side 1)	Active-high enables output drivers for IN1/IN2; tri-states outputs when low (ten2 ≤ 9.2 ns).
VDD2	Secondary-side supply	Power for output-side logic and channel 3–4 drivers; independent 2.70–5.5 V rail enables level shifting.
GND2	Secondary-side ground	Reference for outputs and channel 3–4 receivers; galvanically isolated from GND1.
OUT1, OUT2	Isolated outputs (side 2)	CMOS-compatible outputs referenced to GND2; VOH ≥ VDD2–0.4 V, VOL ≤ 0.4 V at 4 mA sink.
EN3, EN4	Enable controls (side 2)	Active-high enables output drivers for OUT1/OUT2; provides independent channel gating on secondary side.

Key Features

Feature	Design Value
Quad-channel isolation	Four independent bidirectional signal paths in single WB-SOIC-16 package - reduces PCB area vs. discrete optocouplers or dual isolators.
No start-up initialization	Valid output data available within 40 µs of power application - eliminates boot-time delays in safety-critical systems.
Ultra-low power at speed	<8.0 mA per channel at 100 Mbps (5 V) - enables thermally constrained designs like enclosed motor drives and portable test equipment.
AEC-Q100 qualified	Grade 0 (–40 to +125 °C) qualification - supports deployment in automotive subsystems including battery disconnect units and onboard chargers.
Controlled output impedance	~85 Ω nominal series termination - minimizes reflections on controlled-impedance PCB traces without external resistors.

Applications

Industrial Motor Control	Isolated Switch-Mode Power Supply
Use Scenario: Isolating PWM gate drive signals and current-sense feedback in three-phase inverter stacks. IC Role / Device Role / Timing Role: Quad-channel isolator conveying complementary PWM pairs and analog-to-digital converter outputs across isolation barrier. Use Value: 0.5 ns channel-channel skew preserves dead-time accuracy; 25 kV/µs CMTI prevents false triggering during IGBT switching transients.	Use Scenario: Providing feedback path from secondary-side voltage/current sensors to primary-side controller in AC-DC and DC-DC converters. IC Role / Device Role / Timing Role: Transmitting isolated error amplifier output and overcurrent fault signals with sub-10 ns latency. Use Value: 6 ns minimum pulse width supports high-frequency (>1 MHz) control loops; 2500 VRMS rating meets IEC 62368-1 reinforced insulation requirements.
Hybrid Electric Vehicle Battery Management	Isolated Data Acquisition Systems
Use Scenario: Interfacing cell voltage monitors and temperature sensors across high-voltage battery packs (up to 800 V DC). IC Role / Device Role / Timing Role: Isolating UART or SPI communications between slave BMS ICs and master controller. Use Value: AEC-Q100 Grade 0 qualification ensures reliability at 125 °C ambient; 2.70–5.5 V dual supply accommodates mixed-voltage sensor interfaces.	Use Scenario: Isolating analog front-end ADCs and DACs in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Transmitting digitized sensor data and control commands across isolation barrier in noisy factory environments. Use Value: 150 Mbps capability supports oversampled sigma-delta ADC streams; 25 kV/µs CMTI rejects noise from adjacent VFDs and welding equipment.

Industrial Motor Control

Isolated Switch-Mode Power Supply

Use Scenario: Isolating PWM gate drive signals and current-sense feedback in three-phase inverter stacks.

IC Role / Device Role / Timing Role: Quad-channel isolator conveying complementary PWM pairs and analog-to-digital converter outputs across isolation barrier.

Use Value: 0.5 ns channel-channel skew preserves dead-time accuracy; 25 kV/µs CMTI prevents false triggering during IGBT switching transients.

Use Scenario: Providing feedback path from secondary-side voltage/current sensors to primary-side controller in AC-DC and DC-DC converters.

IC Role / Device Role / Timing Role: Transmitting isolated error amplifier output and overcurrent fault signals with sub-10 ns latency.

Use Value: 6 ns minimum pulse width supports high-frequency (>1 MHz) control loops; 2500 VRMS rating meets IEC 62368-1 reinforced insulation requirements.

Hybrid Electric Vehicle Battery Management

Isolated Data Acquisition Systems

Use Scenario: Interfacing cell voltage monitors and temperature sensors across high-voltage battery packs (up to 800 V DC).

IC Role / Device Role / Timing Role: Isolating UART or SPI communications between slave BMS ICs and master controller.

Use Value: AEC-Q100 Grade 0 qualification ensures reliability at 125 °C ambient; 2.70–5.5 V dual supply accommodates mixed-voltage sensor interfaces.

Use Scenario: Isolating analog front-end ADCs and DACs in programmable logic controller (PLC) I/O modules.

IC Role / Device Role / Timing Role: Transmitting digitized sensor data and control commands across isolation barrier in noisy factory environments.

Use Value: 150 Mbps capability supports oversampled sigma-delta ADC streams; 25 kV/µs CMTI rejects noise from adjacent VFDs and welding equipment.

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 narrow body; higher 10.5 ns max propagation delay; no AEC-Q100 qualification.	Targeted at industrial automation, not automotive; narrower creepage (4.01 mm) limits use in high-pollution environments.	Preferred where board space is constrained and automotive qualification is unnecessary.
ISO6741QDWR	4-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide body; lower speed but higher isolation; AEC-Q100 Grade 1 (–40 to +125 °C).	Suited for high-isolation safety-critical subsystems (e.g., EV traction inverter control) where 150 Mbps is not required.	Select when >3.75 kVRMS working voltage or enhanced partial discharge performance is mandated.

Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8441AA-C-IS1 uniquely balances 150 Mbps speed, AEC-Q100 Grade 0 qualification, and 2500 VRMS isolation in a wide-body SOIC - making it optimal for high-speed, thermally demanding automotive and industrial control applications where timing fidelity and reliability are non-negotiable.

Availability

SI8441AA-C-IS1 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 SI8441AA-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 to replace optocouplers in high-reliability, high-speed isolation applications - delivering superior timing, power efficiency, and lifetime stability across automotive, industrial, and computing markets.

FAQ

What is the maximum data rate supported by SI8441AA-C-IS1?

The SI8441AA-C-IS1 supports a maximum data rate of 150 Mbps, verified across its full operating temperature range (–40 to +125 °C) and supply voltage range (2.70–5.5 V). This performance is specified for the 'Bx' variant (e.g., SI8441BB), and SI8441AA-C-IS1 is confirmed as a 150 Mbps-rated part per Skyworks' ordering guide and electrical characteristics tables.

Does SI8441AA-C-IS1 require external bypass capacitors?

Yes, SI8441AA-C-IS1 requires external 0.1 µF ceramic bypass capacitors placed close to each VDD pin (VDD1 and VDD2) and their respective ground pins (GND1 and GND2). The datasheet explicitly states "only VDD bypass capacitors are required" for stable operation, with no additional external components needed for basic functionality.

Is SI8441AA-C-IS1 pin-compatible with other Si844x variants?

SI8441AA-C-IS1 shares the same 16-pin wide-body SOIC package and pinout with all Si8440/41/42/45 devices in the family, including SI8441AB-C-IS1 and SI8441BB-C-IS1. Pin functions (IN1–IN2, EN1–EN2, VDD1/GND1, OUT1–OUT2, EN3–EN4, VDD2/GND2) are identical across variants - enabling drop-in replacement where speed and supply requirements align.

What safety certifications apply to SI8441AA-C-IS1?

SI8441AA-C-IS1 is certified to UL 1577 (2500 VRMS, 1 min), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. These approvals cover reinforced insulation with 560 Vpeak working voltage and are validated for the wide-body SOIC package used in SI8441AA-C-IS1, as confirmed in Tables 6 and 7 of the datasheet.

Can SI8441AA-C-IS1 operate with different supply voltages on each side?

Yes, SI8441AA-C-IS1 supports independent supply rails: VDD1 (2.70–5.5 V) powers the input side and channels 1–2, while VDD2 (2.70–5.5 V) powers the output side and channels 3–4. This allows level-shifting between 3.3 V microcontrollers and 5 V actuators or sensors without external level translators.

SI8441AA-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:: 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-C-IS1 FAQ

1.How can I place an order for SI8441AA-C-IS1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SI8441AA-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 SI8441AA-C-IS1 reliable?

The price and inventory of SI8441AA-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 SI8441AA-C-IS1 is usually 5 days.

3.What payment methods are accepted for SI8441AA-C-IS1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441AA-C-IS1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI8441AA-C-IS1?

SI8441AA-C-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI8441AA-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 SI8441AA-C-IS1?

For technical support, including SI8441AA-C-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441AA-C-IS1 requirements.

6.How does Aetrix verify that SI8441AA-C-IS1 is sourced from the original manufacturer or authorized distributors?

All SI8441AA-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 SI8441AA-C-IS1 meets industry standards.

7.What is the process for return or replacement of SI8441AA-C-IS1?

All SI8441AA-C-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8441AA-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 SI8441AA-C-IS1 part is unused and in its original packaging.

Return procedure for SI8441AA-C-IS1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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