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Skyworks Solutions Inc. SI8440AA-D-IS1
- Part No.:
- SI8440AA-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8440AA-D-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,385
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Product details
Overview
SI8440AA-D-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 <9.5 ns worst-case propagation delay and 25 kV/µs common-mode transient immunity. It operates from 2.70–5.5 V on both sides, achieves <6 mA per channel at 100 Mbps (5 V), and delivers reinforced insulation rated at 2500 VRMS for industrial motor control and isolated power supply interfaces.
For engineers reviewing the SI8440AA-D-IS1 datasheet, SI8440AA-D-IS1 pinout, SI8440AA-D-IS1 application, or SI8440AA-D-IS1 equivalent, key selection criteria include its AEC-Q100 qualification, 0.5 ns typical channel-to-channel skew, 6 ns minimum pulse width, and compatibility with 3.3 V/5 V mixed-supply systems in high-noise environments.
Technical Context
The SI8440AA-D-IS1 implements capacitive isolation with on-chip RF modulation/demodulation across four independent bidirectional channels. Its timing architecture guarantees ≤9.5 ns propagation delay (tPHL/tPLH) and ≤1.8 ns channel-channel skew over –40°C to +125°C at 150 Mbps, with precise edge alignment enabled by matched internal delay paths and 85 Ω nominal output impedance.
It features an enable input per side (EN1/EN2) controlling output tri-state behavior, supports DC-to-150 Mbps operation without start-up initialization, and maintains stable electrical performance across supply voltages (2.70–5.5 V) and temperature extremes - critical for real-time isolated feedback in power inverters and motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables high-speed serial communication between MCU and isolated gate drivers or ADCs. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures deterministic timing for closed-loop control loops requiring sub-10 ns latency. |
| Channel-Channel Skew | ≤1.8 ns (max) - preserves phase alignment across multiple isolated signals in synchronized sampling applications. |
| Common-Mode Transient Immunity | 25 kV/µs - suppresses noise coupling in fast-switching power stages like SiC/GaN inverters. |
| Isolation Voltage | 2500 VRMS (1 min) - meets reinforced insulation requirements per UL 1577, CSA 5A, and VDE 0884-2. |
| Supply Range | 2.70–5.5 V on both sides - allows interoperability with 3.3 V logic and 5 V legacy systems without level shifters. |
| Power Consumption | <6 mA per channel at 100 Mbps (5 V) - reduces thermal load and extends battery life in portable isolated sensors. |
Pinout & Package
SI8440AA-D-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage/clearance, RoHS-compliant, and qualified for industrial and automotive environments (AEC-Q100).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Primary and secondary side supply pins | Independent 2.70–5.5 V supplies enable galvanic separation of logic domains and fault containment. |
| GND1, GND2 | Primary and secondary side ground references | Physically isolated grounds prevent ground-loop currents and enable floating bus architectures. |
| IN1–IN4 | Input signal terminals (primary side) | Accept CMOS-level inputs; VIH ≥2.0 V, VIL ≤0.8 V - compatible with standard microcontrollers and FPGAs. |
| OUT1–OUT4 | Output signal terminals (secondary side) | Drive loads up to 4 mA with VOH ≥VDD2–0.4 V and VOL ≤0.4 V - supports direct connection to gate drivers or ADC reference inputs. |
| EN1, EN2 | Enable inputs for primary and secondary sides | Assert low to place respective side outputs in high-impedance state - enables bus sharing and hot-swap capability. |
| NC | No-connect pins (pins 9, 10, 15, 16) | Internally unused; must remain unconnected to avoid parasitic coupling or EMI issues. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation with independent supplies | Enables full-duplex, multi-signal isolation (e.g., PWM + current sense + fault flag) without shared supply dependencies. |
| Ultra-low power at high speed | Consumes only 3.8 mA per side at 100 Mbps (5 V), reducing heat generation in densely packed power modules. |
| Precision timing performance | 1.5 ns typical pulse width distortion and 0.5 ns typical channel-channel skew ensure accurate signal reconstruction in time-critical feedback paths. |
| 60-year lifetime at rated voltage | Validated reliability under continuous 2500 VRMS stress supports long-life deployments in industrial automation infrastructure. |
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C operation with full parametric guarantee - suitable for under-hood automotive subsystems. |
Applications
| Motor Control Feedback | Isolated Power Supply Monitoring |
|---|---|
Use Scenario: Real-time current and voltage sensing in three-phase inverter legs using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: Isolates analog front-end ADC interface signals while preserving nanosecond-level timing integrity for field-oriented control algorithms. Use Value: Enables synchronous sampling of phase currents with ≤1.8 ns inter-channel skew, minimizing torque ripple in servo drives. | Use Scenario: Monitoring output voltage/current and providing isolated fault signaling in isolated DC-DC converters. IC Role / Device Role / Timing Role: Transfers PWM enable/disable commands and status flags across isolation barrier with <8 ns enable-to-valid delay. Use Value: Supports fast shutdown response (<10 ns) during overvoltage events, improving system safety compliance. |
| Industrial PLC I/O Modules | Hybrid Electric Vehicle Battery Management |
Use Scenario: Digital input conditioning and output drive isolation in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Provides 4-channel galvanic separation for discrete sensor inputs and relay driver outputs with shared ground rejection. Use Value: Eliminates ground-loop interference in multi-rack control systems, improving noise immunity beyond 25 kV/µs. | Use Scenario: Isolating cell voltage measurement data and balancing command signals between BMS master and slave boards. IC Role / Device Role / Timing Role: Transfers high-resolution ADC results and balancing enable pulses across 2500 VRMS barrier with minimal jitter. Use Value: Maintains ±0.5 mV measurement accuracy despite 100+ V common-mode transients during switching events. |
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 100 Mbps supply current (9.2 mA/side vs. 6 mA) | Limited to 105°C max ambient; not AEC-Q100 qualified | Prefer for cost-sensitive industrial designs where automotive qualification is unnecessary. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide body; lower speed but higher isolation rating and integrated LDO | Supports 3.3 V/5 V input with 3.3 V regulated output; lacks 150 Mbps capability | Select when >3.75 kVRMS working voltage or local regulation is required, accepting bandwidth trade-off. |
Compared with ADUM140D0BRWZ and ISO6741QDWR, the SI8440AA-D-IS1 uniquely combines AEC-Q100 qualification, 150 Mbps speed, and 25 kV/µs CMTI in a wide-body SOIC - making it optimal for high-reliability, high-speed motor control and EV traction inverter subsystems.
Availability
SI8440AA-D-IS1 is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle battery management, and isolated switch-mode power supply applications requiring stable component supply and long-term lifecycle support.
Supply support for SI8440AA-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 demanding industrial, automotive, and energy infrastructure applications - emphasizing low power, precision timing, and regulatory compliance.
FAQ
What is the maximum operating temperature for SI8440AA-D-IS1?
The SI8440AA-D-IS1 is rated for continuous operation from –40°C to +125°C at full 150 Mbps data rate, validated across all supply voltages (2.70–5.5 V) and loading conditions per Skyworks Rev. 1.7 datasheet specifications. This range supports deployment in under-hood automotive and industrial environments where thermal margins are constrained.
Does SI8440AA-D-IS1 require external components for basic operation?
No, SI8440AA-D-IS1 requires only VDD bypass capacitors (0.1 µF ceramic per supply pin) for stable operation - no external resistors, transformers, or level shifters are needed. Its integrated capacitive isolation architecture eliminates startup initialization sequences, enabling immediate data transmission after power-on.
What safety certifications apply to SI8440AA-D-IS1?
SI8440AA-D-IS1 carries UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE 0884-2 (IEC 60747-5-2) certifications. These cover reinforced insulation up to 560 Vpeak working voltage and 2500 VRMS withstand, with production-tested 3000 VRMS for 1 second per regulatory filing E257455 and File 5006301-4880-0001.
How does the enable function operate on SI8440AA-D-IS1?
SI8440AA-D-IS1 has two independent enable inputs: EN1 controls primary-side outputs (OUT1–OUT4), and EN2 controls secondary-side inputs (IN1–IN4). When asserted low, each places its respective side's outputs into high-impedance state within 8 ns (ten2), allowing safe bus sharing and hot-swap capability without signal contention.
Is SI8440AA-D-IS1 pin-compatible with other Si84xx variants?
Yes, SI8440AA-D-IS1 shares identical pinout and package (WB-SOIC-16) with all Si8440/41/42/45 family members. However, functional differences exist: SI8440 devices have all channels unidirectional (input→output), while SI8441/42 offer bidirectional or mixed-direction configurations - verify directionality per application before substitution.
SI8440AA-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:
- 4/0
- 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
SI8440AA-D-IS1 FAQ
1.How can I place an order for SI8440AA-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8440AA-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 SI8440AA-D-IS1 reliable?
The price and inventory of SI8440AA-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 SI8440AA-D-IS1 is usually 5 days.
3.What payment methods are accepted for SI8440AA-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8440AA-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8440AA-D-IS1?
SI8440AA-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8440AA-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 SI8440AA-D-IS1?
For technical support, including SI8440AA-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8440AA-D-IS1 requirements.
6.How does Aetrix verify that SI8440AA-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8440AA-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 SI8440AA-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8440AA-D-IS1?
All SI8440AA-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8440AA-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 SI8440AA-D-IS1 part is unused and in its original packaging.
Return procedure for SI8440AA-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8440AA-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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