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Skyworks Solutions Inc. SI8640BD-AS2R
- Part No.:
- SI8640BD-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8640BD-AS2R.pdf
- Description:
- AUTOMOTIVE 5 KV 4-CHANNEL DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:1,257
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Product details
Overview
SI8640BD-AS2R from Skyworks is a quad-channel, unidirectional digital isolator with 4-input/0-output channel configuration, 5 kVRMS reinforced isolation rating, and wide-body SOIC-16 package. It supports up to 150 Mbps data rate, achieves <10 ns propagation delay, and operates from 2.5–5.5 V supply on both sides. It is used in isolated gate drivers for industrial motor control inverters requiring high CMTI and fail-safe default-low output during power loss.
For engineers reviewing the SI8640BD-AS2R datasheet, SI8640BD-AS2R pinout, SI8640BD-AS2R application, or SI8640BD-AS2R equivalent, key selection criteria include reinforced 5 kVRMS isolation, automotive-grade AEC-Q100 qualification (indicated by "-A" suffix), selectable fail-safe mode, tri-state enable control, and compatibility with high-noise power conversion environments.
Technical Context
The SI8640BD-AS2R implements RF-based on/off keying across a silicon-die isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical components. Its architecture delivers precise timing with ≤2.5 ns channel-channel skew and ≤4.5 ns propagation delay skew across temperature (–40 to 125 °C).
All four channels are input-only on Side A (VDD1) and output-only on Side B (VDD2), with a single shared EN pin (EN2) controlling all four outputs. The device features Schmitt-trigger inputs, 50 Ω nominal output impedance, and undervoltage lockout (UVLO) on both sides with 70 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS reinforced insulation (UL, VDE 0884-10, CQC certified); enables use in mains-connected industrial drives and EV traction inverters. |
| Max Data Rate | 150 Mbps - supports high-speed feedback loops in servo motor controllers and isolated ADC interfaces. |
| Propagation Delay | 5–13 ns (typ. 8 ns) - ensures tight timing alignment in real-time PWM gate drive systems. |
| Channel-Channel Skew | ≤2.5 ns - critical for synchronized multi-phase inverter switching without shoot-through risk. |
| CMTI | ≥60 kV/µs - maintains signal integrity in high-dV/dt environments like SiC/GaN power stages. |
| Supply Range | 2.5–5.5 V on both VDD1 and VDD2 - allows direct interfacing with 3.3 V microcontrollers and 5 V gate drivers. |
| Fail-Safe Mode | Default low output during VDD1 loss - prevents unintended gate turn-on in power stage protection schemes. |
Pinout & Package
SI8640BD-AS2R uses a 16-pin wide-body SOIC package (WB SOIC-16, -IS2 variant) with 8 mm creepage, RoHS-compliant, peak reflow 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies Side A logic (inputs A1–A4); UVLO threshold 2.24 V (typ.) ensures clean startup. |
| GND1 | Input-side ground reference | Return path for Side A; must be separated from GND2 by ≥8 mm creepage for safety compliance. |
| A1–A4 | Digital input signals | CMOS-compatible Schmitt-trigger inputs; 0.44 V hysteresis rejects >100 MHz noise transients. |
| VDD2 | Output-side power supply | Supplies Side B logic (outputs B1–B4); independent of VDD1 for true galvanic isolation. |
| GND2 | Output-side ground reference | Return path for Side B; forms isolation barrier with GND1; requires PCB slot or clearance. |
| B1–B4 | Isolated digital outputs | Push-pull outputs with 50 Ω impedance; support 4 mA sink/source at 0.2 V/4.8 V levels. |
| EN2 | Enable control (Side B) | Active-high; places B1–B4 in high-impedance state when low - enables output multiplexing or safe shutdown. |
| NC | No-connect terminal | Pin 16 is internally unconnected; must remain floating, tied to VDD2, or grounded - no internal pull. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced VDE 0884-10 certification | Validated 10 kV surge capability and 60-year lifetime at rated working voltage - meets IEC 62368-1 and 60601-1 system requirements. |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V (22.8 mA total for 4 channels) - reduces thermal load in densely packed inverters. |
| Automotive-grade AEC-Q100 qualification | Manufactured in full automotive flow with AIAG PPAP, IMDS/CAMDS support - qualified for battery management and on-board chargers. |
| Precise timing uniformity | 0.5 ns typical channel-channel skew and 2 ns propagation delay skew - enables deterministic multi-channel timing in closed-loop control. |
| Fail-safe default-low output | Guaranteed logic-low state on B1–B4 when VDD1 = 0 V and VDD2 powered - eliminates need for external pull-downs in safety-critical paths. |
Applications
| Industrial Motor Control | Isolated Power Supply Feedback |
|---|---|
|
Use Scenario: Gate driving for 3-phase IGBT/SiC modules in variable-frequency drives. IC Role / Device Role / Timing Role: Isolates PWM signals from MCU to gate driver ICs while maintaining sub-10 ns timing accuracy across all 4 channels. Use Value: Enables synchronous switching of multiple phases with ≤2.5 ns skew, preventing cross-conduction and improving efficiency. |
Use Scenario: Transmitting error amplifier output from secondary-side TL431 to primary-side PWM controller in isolated DC-DC converters. IC Role / Device Role / Timing Role: Replaces optocoupler in feedback loop with 150 Mbps bandwidth and zero aging drift. Use Value: Eliminates optocoupler CTR degradation over time, ensuring stable regulation across 10+ year product lifetimes. |
| EV On-Board Charger (OBC) | Medical Isolated Data Acquisition |
|
Use Scenario: Isolating digital control signals between AC/DC front-end and DC/DC isolation stage in 11 kW OBCs. IC Role / Device Role / Timing Role: Transfers enable, fault, and status signals across 5 kVRMS barrier with AEC-Q100 reliability. Use Value: Meets ISO 6469-3 functional safety requirements for electric vehicle charging systems without external redundancy. |
Use Scenario: Isolating SPI bus between patient-connected analog front-end and host MCU in portable ECG monitors. IC Role / Device Role / Timing Role: Provides 5 kVRMS reinforced isolation for 60 Hz–1 kHz biopotential signals with low jitter. Use Value: Achieves IEC 60601-1 4th edition creepage/clearance compliance while supporting 12-bit ADC sampling at 10 kSPS. |
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; 25 Mbps max data rate; no AEC-Q100 qualification; 16-pin SOIC narrow body. | Suitable for non-safety-critical industrial PLC I/O modules but not for automotive or reinforced insulation systems. | Choose ADUM2400ARWZ only if 5 kVRMS and 150 Mbps are unnecessary and cost is primary constraint. |
| ISO6741QDWR | 5 kVRMS reinforced isolation; 50 Mbps max data rate; AEC-Q100 Grade 1; 16-pin SOIC wide body; higher 10 mA/channel supply current at 100 Mbps. | Valid for automotive BMS and OBCs but lacks 150 Mbps capability needed for high-resolution encoder interfaces. | Choose ISO6741QDWR when AEC-Q100 Grade 1 and lower EMI sensitivity are prioritized over speed and ultra-low power. |
Compared with ADUM2400ARWZ and ISO6741QDWR, SI8640BD-AS2R uniquely combines 5 kVRMS reinforced isolation, 150 Mbps speed, AEC-Q100 qualification, and <10 ns propagation delay - making it the only option for next-generation SiC inverter gate drive and high-bandwidth isolated feedback loops.
Availability
SI8640BD-AS2R is available at Aetrix Electronics and suitable for industrial motor drives, EV on-board chargers, and medical isolated data acquisition systems requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8640BD-AS2R 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 designed specifically for high-reliability, high-speed digital isolation in harsh environments - targeting industrial automation, automotive electrification, and medical equipment where legacy optocouplers fail.
FAQ
What is the isolation rating and certification status of SI8640BD-AS2R?
SI8640BD-AS2R provides 5 kVRMS reinforced isolation and is certified to UL 1577, VDE 0884-10 (reinforced), CSA 5A, CQC GB4943.1, and IEC 62368-1. These certifications validate its use in safety-critical applications such as industrial inverters and EV charging systems where reinforced insulation is mandated.
Does SI8640BD-AS2R support fail-safe operation, and how is it configured?
Yes, SI8640BD-AS2R has a factory-configured fail-safe mode that defaults outputs B1–B4 to logic low when VDD1 is unpowered but VDD2 remains active. This behavior is fixed per ordering code (–BD suffix denotes default-low) and requires no external components or configuration pins.
What package type and creepage distance does SI8640BD-AS2R use?
SI8640BD-AS2R uses a 16-pin wide-body SOIC package with –IS2 designation, featuring 8 mm creepage distance achieved via tie-bar elimination while retaining standard WB SOIC land pattern - enabling compliance with IEC 61800-5-1 for industrial drives.
Is SI8640BD-AS2R qualified for automotive applications?
Yes, the "-A" suffix in SI8640BD-AS2R confirms full AEC-Q100 Grade 1 qualification (–40 to 125 °C), automotive-specific manufacturing flow, AIAG-compliant PPAP documentation, and IMDS/CAMDS material declarations - making it suitable for battery management systems and on-board chargers.
How does the enable pin (EN2) function on SI8640BD-AS2R?
EN2 is an active-high enable input on the output side (VDD2) that places all four outputs (B1–B4) into high-impedance state when driven low. This allows dynamic output disabling for system-level fault handling or power sequencing without affecting input-side logic states.
SI8640BD-AS2R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si864x
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive 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
SI8640BD-AS2R FAQ
1.How can I place an order for SI8640BD-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8640BD-AS2R 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 SI8640BD-AS2R reliable?
The price and inventory of SI8640BD-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8640BD-AS2R is usually 5 days.
3.What payment methods are accepted for SI8640BD-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8640BD-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8640BD-AS2R?
SI8640BD-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8640BD-AS2R 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 SI8640BD-AS2R?
For technical support, including SI8640BD-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8640BD-AS2R requirements.
6.How does Aetrix verify that SI8640BD-AS2R is sourced from the original manufacturer or authorized distributors?
All SI8640BD-AS2R 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 SI8640BD-AS2R meets industry standards.
7.What is the process for return or replacement of SI8640BD-AS2R?
All SI8640BD-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI8640BD-AS2R, 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 SI8640BD-AS2R part is unused and in its original packaging.
Return procedure for SI8640BD-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8640BD-AS2R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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