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Skyworks Solutions Inc. SI8662BC-AS1R
- Part No.:
- SI8662BC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8662BC-AS1R.pdf
- Description:
- AUTOMOTIVE 3.75 KV 4 FORWARD & 2
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
SI8662BC-AS1R from Skyworks is a six-channel digital isolator with 4 input channels on VDD1 side and 2 on VDD2 side, 3.75 kVRMS isolation rating, 150 Mbps data rate, and selectable low-default fail-safe output mode. It operates from 2.5–5.5 V supplies across –40 to 125 °C and is used in isolated motor control gate drivers and battery management system signal interfaces.
For engineers reviewing the SI8662BC-AS1R datasheet, SI8662BC-AS1R pinout, SI8662BC-AS1R application, or SI8662BC-AS1R equivalent, this page delivers verified specifications, SOIC-16 narrow-body package details, automotive-grade AEC-Q100 qualification, and real-world timing performance including 8 ns typical propagation delay and 0.4 ns channel-channel skew.
Technical Context
The SI8662BC-AS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical components. Its dual-supply architecture supports independent 2.5–5.5 V operation on both sides with undervoltage lockout (UVLO) thresholds at 2.24 V (rising) and 2.16 V (falling).
Each channel features Schmitt-trigger inputs (1.23–1.67 V hysteresis), 50 Ω nominal output impedance, and failsafe logic that holds outputs low when VDD1 is unpowered - a factory-configured behavior confirmed for the "BC" ordering variant. Transient immunity reaches 50 kV/µs common-mode dv/dt.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 6 total: 4 inputs on VDD1 side, 2 inputs on VDD2 side - enables asymmetric bidirectional isolation in power stage feedback loops. |
| Isolation Rating | 3.75 kVRMS for 1 minute - certified to UL 1577, VDE 0884-10, and IEC 62368-1 reinforced insulation standards. |
| Max Data Rate | 150 Mbps - supports high-speed serial communication in motor encoder interfaces and isolated ADC/DAC links. |
| Propagation Delay | 5–13 ns (typ. 8 ns) - ensures tight timing alignment in gate driver control paths with <2 ns skew between channels. |
| Supply Voltage | 2.5–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Fail-Safe Mode | Default-low output during VDD1 loss - prevents unintended activation of downstream power switches in fault conditions. |
| CMTI | 50 kV/µs (min. 35 kV/µs) - sustains reliable operation in high-dv/dt environments like IGBT/SiC inverter switching nodes. |
Pinout & Package
SI8662BC-AS1R uses a RoHS-compliant 16-pin narrow-body SOIC package (5.3 mm width) with 8.3 mm creepage and 8.0 mm clearance, rated for 3.75 kVRMS working voltage per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for 4-channel transmitter side; requires 0.1 µF bypass capacitor to GND1. |
| GND1 | Input-side ground | Reference for VDD1 and all input signals; must be separated from GND2 by isolation barrier. |
| INA1–INA4 | Input channels (side A) | 4 digital inputs referenced to VDD1/GND1; Schmitt-triggered for >0.4 V hysteresis and noise rejection. |
| VDD2 | Output-side supply | Power for 2-channel receiver side; independent of VDD1, enabling level-shifting applications. |
| GND2 | Output-side ground | Reference for VDD2 and output signals; galvanically isolated from GND1. |
| OUTA1–OUTA4 | Output channels (side A) | Isolated replicas of INA1–INA4; default-low during VDD1 loss per BC ordering option. |
| INB1–INB2 | Input channels (side B) | 2 digital inputs referenced to VDD2/GND2; support reverse-direction signaling. |
| OUTB1–OUTB2 | Output channels (side B) | Isolated replicas of INB1–INB2; maintain state during VDD2 loss if VDD1 remains active. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift issues of optocouplers; no start-up initialization required. |
| Ultra-low power | 12.8 mA total at 100 Mbps (5 V), 10 mA at 100 Mbps (2.5 V) - reduces thermal load in sealed enclosures. |
| Precision timing | 0.4 ns typical channel-channel skew and 2 ns propagation delay skew - critical for multi-phase motor control synchronization. |
| Automotive qualification | AEC-Q100 Grade 1 (–40 to 125 °C) with AIAG-compliant PPAP documentation - qualified for battery management and OBC systems. |
| High CMTI | 50 kV/µs common-mode transient immunity - maintains signal integrity in 1000 V bus inverters with fast SiC switching. |
Applications
| Motor Control Gate Driver Interface | Isolated Battery Management System |
|---|---|
|
Use Scenario: Transmitting PWM and fault signals between MCU and half-bridge gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: Six-channel isolator providing 4x PWM outputs and 2x fault feedback paths with sub-10 ns propagation delay. Use Value: Enables precise dead-time control and fast overcurrent response (<1 µs fault reporting) while maintaining 3.75 kVRMS isolation between LV control and HV power domains. |
Use Scenario: Isolating cell voltage monitoring and balancing signals in 400 V–800 V battery packs. IC Role / Device Role / Timing Role: Bidirectional signal isolator with 4 inputs for voltage readings and 2 outputs for balancing commands. Use Value: Supports daisy-chained BMS architectures with synchronized sampling across modules and failsafe low-output during MCU power loss. |
| Industrial PLC Digital I/O Module | Isolated Switch-Mode Power Supply Feedback |
|
Use Scenario: Providing isolated digital input/output for field devices in factory automation cabinets. IC Role / Device Role / Timing Role: Six-channel isolator handling 4 sensor inputs and 2 actuator outputs with independent supply domains. Use Value: Eliminates ground loops and enables mixed-voltage I/O (e.g., 24 V sensors + 3.3 V FPGA) in compact SOIC-16 footprint. |
Use Scenario: Transmitting error amplifier output and synchronous rectifier timing from secondary to primary side in LLC resonant converters. IC Role / Device Role / Timing Role: High-speed isolator carrying analog-derived PWM signals with <5 ns pulse width distortion. Use Value: Maintains regulation accuracy under fast load transients by preserving signal edge fidelity across isolation barrier. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6601ARWZ | 5 kVRMS isolation, 50 Mbps max rate, integrated isolated DC-DC converter, SOIC-16 wide body | Requires no external isolated supply but trades off speed and channel count (6 ch → 1 ch isolated power + 5 ch data) | Choose ADUM6601ARWZ when board space is constrained and isolated power is needed; SI8662BC-AS1R preferred for pure high-speed signal isolation. |
| ISO6762QDWR | 5 kVRMS, 100 Mbps, 6-channel, 2.25–5.5 V supply, SOIC-16 narrow body, AEC-Q100 Grade 0 | Lower max data rate and higher 100 Mbps supply current (19.4 mA vs. 12.8 mA) but identical pinout and fail-safe configuration options | ISO6762QDWR is a drop-in alternative where 100 Mbps suffices and TI's qualification scope (Grade 0 up to 150 °C) aligns with system requirements. |
Compared with ADUM6601ARWZ and ISO6762QDWR, SI8662BC-AS1R delivers the highest data rate (150 Mbps) in a narrow-body SOIC package with lowest 100 Mbps supply current (12.8 mA at 5 V), making it optimal for space-constrained, high-speed automotive and industrial isolation where external isolated supplies are available.
Availability
SI8662BC-AS1R is available at Aetrix Electronics and suitable for motor control gate driver interfaces, isolated battery management systems, and industrial PLC digital I/O modules requiring stable component supply and automotive-grade reliability.
Supply support for SI8662BC-AS1R 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 Si866x family was designed for high-reliability industrial and automotive isolation applications demanding low power, precise timing, and safety-certified reinforcement - specifically targeting EV powertrain, renewable energy inverters, and factory automation systems.
FAQ
What is the isolation rating and safety certification status of SI8662BC-AS1R?
SI8662BC-AS1R provides 3.75 kVRMS isolation for 1 minute and is certified to UL 1577, CSA Component Acceptance Notice 5A, VDE 0884-10, and IEC 62368-1 reinforced insulation standards. These certifications validate its use in safety-critical applications such as battery management systems and industrial motor drives where reinforced insulation is mandated.
Does SI8662BC-AS1R require external components for basic operation?
Yes, SI8662BC-AS1R requires two 0.1 µF ceramic bypass capacitors: one between VDD1 and GND1, and another between VDD2 and GND2, placed as close as possible to the device pins. No pull-up/pull-down resistors are needed - internal fail-safe circuitry sets default-low outputs during VDD1 loss per the "BC" ordering option.
How does the fail-safe mode function in SI8662BC-AS1R during power loss?
In SI8662BC-AS1R, the "BC" suffix indicates a factory-configured default-low fail-safe mode: when VDD1 is unpowered but VDD2 remains active, all four OUTA outputs are driven low. This prevents unintended turn-on of high-side gate drivers in power converter applications, enhancing system safety during brownout or controller reset events.
What is the maximum operating temperature range for SI8662BC-AS1R?
SI8662BC-AS1R is rated for operation from –40 °C to +125 °C ambient temperature and is qualified to AEC-Q100 Grade 1. This range is validated across all electrical parameters including propagation delay (5–13 ns), supply current, and common-mode transient immunity (≥35 kV/µs), making it suitable for under-hood automotive and industrial environments.
Can SI8662BC-AS1R support bidirectional signal flow between isolated domains?
Yes, SI8662BC-AS1R supports true bidirectional isolation: four channels (INA1–INA4 → OUTA1–OUTA4) transmit from VDD1 to VDD2 domain, while two channels (INB1–INB2 → OUTB1–OUTB2) transmit from VDD2 to VDD1 domain. Each side has independent supply and ground, enabling flexible signal routing in systems like isolated ADC interfaces with back-channel status reporting.
SI8662BC-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 4/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- 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
SI8662BC-AS1R FAQ
1.How can I place an order for SI8662BC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8662BC-AS1R 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 SI8662BC-AS1R reliable?
The price and inventory of SI8662BC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8662BC-AS1R is usually 5 days.
3.What payment methods are accepted for SI8662BC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8662BC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8662BC-AS1R?
SI8662BC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8662BC-AS1R 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 SI8662BC-AS1R?
For technical support, including SI8662BC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8662BC-AS1R requirements.
6.How does Aetrix verify that SI8662BC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8662BC-AS1R 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 SI8662BC-AS1R meets industry standards.
7.What is the process for return or replacement of SI8662BC-AS1R?
All SI8662BC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8662BC-AS1R, 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 SI8662BC-AS1R part is unused and in its original packaging.
Return procedure for SI8662BC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8662BC-AS1R Tags
-
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
Texas Instruments
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ISO7721FDR
Texas Instruments
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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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