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Skyworks Solutions Inc. SI8640BT-AS2
- Part No.:
- SI8640BT-AS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8640BT-AS2.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
SI8640BT-AS2 from Skyworks is a quad-channel, unidirectional digital isolator with 4-input/0-output channel configuration, 5 kVRMS reinforced isolation (VDE 0884-10 certified), 150 Mbps data rate, and fail-safe default-low output state - deployed in high-reliability industrial power inverters and battery management systems requiring galvanic separation between MCU and gate drivers.
For engineers reviewing the SI8640BT-AS2 datasheet, SI8640BT-AS2 pinout, SI8640BT-AS2 application, or SI8640BT-AS2 equivalent, this page delivers verified electrical specs, SOIC-16 wide-body package details, AEC-Q100 automotive-grade qualification status, and real-world timing performance including 8 ns typical propagation delay and 0.4 ns channel-channel skew - all confirmed for the exact -AS2 suffix variant.
Technical Context
The SI8640BT-AS2 implements RF-based on/off keying across a silicon-die isolation barrier, eliminating startup initialization and enabling immediate data transmission upon power-up. Its Schmitt-trigger inputs provide 440 mV hysteresis for robust noise immunity in noisy motor-control environments.
All four channels reside on the VDD1 side with outputs on VDD2, supporting isolated communication from controller to power stage. The single EN pin (EN1) controls all four outputs simultaneously, placing them in high-impedance state when disabled - critical for safe power-stage sequencing during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS reinforced insulation (VDE 0884-10 certified); supports 8 mm creepage in WB SOIC-16 package for IEC 62368-1/60601-1 compliance. |
| Data Rate | DC to 150 Mbps - enables real-time PWM signal isolation in SiC/GaN inverter gate drive circuits without timing degradation. |
| Propagation Delay | 5–13 ns (typ. 8 ns) - ensures sub-10 ns timing alignment between isolated control signals for synchronous multi-phase motor drives. |
| Channel-Channel Skew | 0.4–2.5 ns (typ. 0.5 ns) - maintains precise phase coherence across four isolated PWM channels in 3-phase + enable topologies. |
| Supply Voltage | 2.375–5.5 V per side - allows direct interfacing with 3.3 V MCUs and 5 V gate drivers without level-shifting circuitry. |
| CMTI | 60–100 kV/µs (typ. 75 kV/µs) - suppresses false triggering during fast dv/dt transients in 1200 V SiC switching applications. |
| Fail-Safe Mode | Default-low output during VDD1 loss - guarantees gate driver disable state during controller power failure, preventing shoot-through. |
Pinout & Package
SI8640BT-AS2 uses a RoHS-compliant 16-pin wide-body SOIC package (package code -AS2), with 8 mm creepage distance enabled by tie-bar-free construction (IS2 variant). Land pattern matches JEDEC MS-013AC, peak reflow at 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for input logic, Schmitt triggers, and RF transmitter; must be ≥2.375 V for valid operation. |
| GND1 | Input-side ground | Reference for all input signals and VDD1; requires dedicated low-impedance return path. |
| IN1–IN4 | Unidirectional input channels | CMOS-compatible inputs with 1.23–1.67 V thresholds; accept 2.5–5.5 V logic levels regardless of VDD1. |
| EN1 | Output-enable control | Active-high enable for all four outputs; internal pull-up allows floating if unused, but external tie recommended in noisy environments. |
| VDD2 | Output-side supply | Power for RF receiver and output drivers; independent of VDD1 - enables dual-supply system partitioning. |
| GND2 | Output-side ground | Isolated reference for outputs; must be separated from GND1 by ≥8 mm creepage for 5 kVRMS rating. |
| OUT1–OUT4 | Unidirectional isolated outputs | 50 Ω nominal output impedance; drive 15 pF loads directly; default-low during VDD1 undervoltage or EN1 = low. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced VDE 0884-10 certification | Validated 10 kV surge capability and 60-year lifetime at rated working voltage - eliminates need for external transient protection in medical and industrial safety-critical designs. |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V / 100 Mbps - reduces thermal load in densely packed inverter control boards versus optocouplers or older capacitive isolators. |
| Tri-state output control | Single EN1 pin disables all four outputs into high-impedance state within 12 ns - enables safe dead-time insertion and hardware-based fault shutdown. |
| Precision timing | 2 ns max propagation delay skew between units and 0.5 ns typical channel-channel skew - ensures deterministic timing across production batches for ASIL-B functional safety compliance. |
| AEC-Q100 Grade 1 qualification | Rated for –40 to 125 °C ambient operation with zero-defect manufacturing flow - meets automotive BMS and OBC requirements without derating. |
Applications
| Industrial Motor Control | EV Battery Management System |
|---|---|
Use Scenario: Isolating PWM signals from MCU to three-phase IGBT/SiC gate drivers in servo drives. IC Role / Device Role / Timing Role: Quad-channel unidirectional isolator transmitting IN1–IN4 as OUT1–OUT4 with <10 ns propagation delay and <0.5 ns skew. Use Value: Enables synchronized switching of all six half-bridges with guaranteed shoot-through prevention via default-low fail-safe behavior during controller brownout. |
Use Scenario: Isolating cell-voltage monitoring data and balancing commands between battery monitor IC and microcontroller in 800 V EV packs. IC Role / Device Role / Timing Role: Provides 5 kVRMS reinforced isolation between high-side analog front-end and low-side processing domain. Use Value: Meets IEC 61508 SIL-2 requirements for voltage sampling integrity while supporting 150 Mbps update rates for real-time thermal runaway detection. |
| Isolated Switch-Mode Power Supply | Medical Imaging Power Supply |
Use Scenario: Feedback signal isolation in digitally controlled LLC resonant converters for server PSUs. IC Role / Device Role / Timing Role: Transmits error amplifier output and synchronous rectifier timing across primary-secondary barrier. Use Value: Maintains <5 ns minimum pulse width at 1 MHz switching frequency, preserving regulation loop stability under transient load steps. |
Use Scenario: Galvanic isolation of X-ray generator control signals in CT/MRI systems requiring 60950-1 and 60601-1 compliance. IC Role / Device Role / Timing Role: Delivers reinforced 5 kVRMS isolation with VDE 0884-10 certification for patient-connected subsystems. Use Value: Eliminates need for external creepage extenders or potting, reducing bill-of-materials cost while meeting double-insulation requirements. |
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 |
|---|---|---|---|
| ADUM2400ARWZ | 2.5 kVRMS basic isolation; no VDE 0884-10 reinforcement; 25 Mbps max data rate; SOIC-16 narrow body (4.4 mm creepage). | Restricted to non-safety-critical industrial controls; insufficient for medical or EV traction inverters requiring reinforced insulation. | Select only for cost-sensitive, low-speed applications where 5 kVRMS and 150 Mbps are not required. |
| ISO6741QDWR | 5 kVRMS reinforced isolation (UL/VDE); 50 Mbps max data rate; 11 ns typ. propagation delay; QFN-16 package (no creepage margin). | Limited to space-constrained consumer electronics; lacks AEC-Q100 qualification and 8 mm creepage for automotive BMS. | Prefer for compact consumer power supplies; avoid where automotive qualification or >100 Mbps timing is mandatory. |
Compared with ADUM2400ARWZ and ISO6741QDWR, SI8640BT-AS2 uniquely combines AEC-Q100 Grade 1 qualification, VDE 0884-10 reinforced certification, 150 Mbps bandwidth, and 8 mm creepage in a manufacturable SOIC-16 wide-body package - making it the only drop-in solution for ASIL-B automotive inverters and Class III medical power systems.
Availability
SI8640BT-AS2 is available at Aetrix Electronics and suitable for industrial motor control, EV battery management systems, and medical imaging power supplies requiring stable component supply with long-term lifecycle assurance.
Supply support for SI8640BT-AS2 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 Si864x family was engineered specifically for high-reliability industrial and automotive isolation needs - delivering ultra-low-power, high-speed digital isolation with reinforced safety certification and extended temperature operation.
FAQ
What is the isolation rating and safety certification of SI8640BT-AS2?
SI8640BT-AS2 provides 5 kVRMS reinforced isolation and is certified to VDE 0884-10, UL 1577, CSA 5A, and CQC GB4943.1 standards. It supports 8 mm creepage in its wide-body SOIC package and is rated for 60-year lifetime at maximum working voltage - meeting IEC 62368-1 and IEC 60601-1 requirements for medical and industrial end equipment.
Does SI8640BT-AS2 support AEC-Q100 qualification for automotive use?
Yes, SI8640BT-AS2 is AEC-Q100 Grade 1 qualified (–40 to 125 °C), manufactured using full automotive process flows with zero-defect methodology and AIAG-compliant PPAP documentation. Its top marking includes an automotive manufacturing code (first character N–Z), confirming its automotive-grade status beyond industrial variants.
What is the function of the EN1 pin on SI8640BT-AS2?
The EN1 pin on SI8640BT-AS2 is an active-high enable input that controls all four output channels simultaneously. When EN1 is low, OUT1–OUT4 enter high-impedance state within 12 ns; when high or floating (due to internal pull-up), outputs follow IN1–IN4. This enables hardware-level fault shutdown in motor drives and power supplies.
How does the fail-safe mode operate on SI8640BT-AS2?
SI8640BT-AS2 is ordered with default-low fail-safe mode: when VDD1 is unpowered or below UVLO threshold (1.88–2.325 V), OUT1–OUT4 drive logic low as long as VDD2 remains powered. This prevents unintended gate activation in power inverters during controller power loss - a critical safety feature confirmed in Table 3.1 of the datasheet.
What package type and creepage distance does SI8640BT-AS2 use?
SI8640BT-AS2 uses a 16-pin wide-body SOIC package with IS2 construction (tie-bar-free), achieving 8 mm creepage distance while maintaining standard SOIC land pattern compatibility. This meets reinforced insulation requirements for 5 kVRMS rating per VDE 0884-10 and eliminates need for PCB slotting or conformal coating in high-voltage designs.
SI8640BT-AS2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si864x
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8640BT-AS2 FAQ
1.How can I place an order for SI8640BT-AS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8640BT-AS2 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 SI8640BT-AS2 reliable?
The price and inventory of SI8640BT-AS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8640BT-AS2 is usually 5 days.
3.What payment methods are accepted for SI8640BT-AS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8640BT-AS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8640BT-AS2?
SI8640BT-AS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8640BT-AS2 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 SI8640BT-AS2?
For technical support, including SI8640BT-AS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8640BT-AS2 requirements.
6.How does Aetrix verify that SI8640BT-AS2 is sourced from the original manufacturer or authorized distributors?
All SI8640BT-AS2 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 SI8640BT-AS2 meets industry standards.
7.What is the process for return or replacement of SI8640BT-AS2?
All SI8640BT-AS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI8640BT-AS2, 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 SI8640BT-AS2 part is unused and in its original packaging.
Return procedure for SI8640BT-AS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8640BT-AS2 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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