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Skyworks Solutions Inc. SI8660BB-AS1R
- Part No.:
- SI8660BB-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8660BB-AS1R.pdf
- Description:
- AUTOMOTIVE 2.5 KV 6 FORWARD CHAN
- Quantity:
- Payment:
- Shipping:
Inventory:1,805
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Product details
Overview
SI8660BB-AS1R from Skyworks is a six-channel, automotive-grade digital isolator with 2.5 kVRMS isolation rating, 150 Mbps data rate, <10 ns propagation delay, and fail-safe default-low output configuration. It operates across –40 to 125 °C and supports 2.5–5.5 V dual supplies, enabling robust signal isolation in high-noise traction inverter gate drive circuits.
For engineers reviewing the SI8660BB-AS1R datasheet, SI8660BB-AS1R pinout, SI8660BB-AS1R application, or SI8660BB-AS1R equivalent, key selection criteria include AEC-Q100 qualification, 50 kV/µs CMTI, narrow-body SOIC-16 package with 8 mm creepage, and channel-specific power domain independence for motor control safety separation.
Technical Context
The SI8660BB-AS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and supporting DC–150 Mbps operation without clock recovery circuitry. Its Schmitt-trigger inputs provide 0.44 V typical hysteresis for noise immunity in industrial bus environments.
Each of its six unidirectional channels operates independently across isolated VDD1/VDD2 domains, with undervoltage lockout (UVLO) thresholds at 2.24 V (rising) and 2.16 V (falling) per side. Fail-safe behavior defaults outputs low when VDD1 is unpowered but VDD2 remains active - a factory-configured ordering option confirmed for this part number.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 6 unidirectional, input-side only (6:0 configuration) |
| Max Data Rate | 150 Mbps - supports high-speed SPI, CAN FD, and PWM feedback in real-time motor control loops |
| Propagation Delay | 8.0 ns typical - enables sub-100 ns closed-loop timing margins in servo drives |
| Isolation Rating | 2.5 kVRMS - UL/CSA/VDE/CQC certified for reinforced insulation in 400–800 V battery systems |
| CMTI | 50 kV/µs minimum - prevents false triggering during fast dv/dt transients in SiC/GaN inverter switching |
| Supply Range | 2.5–5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V gate drivers without level shifters |
| Operating Temp | –40 to 125 °C - qualified per AEC-Q100 Grade 1 for under-hood automotive use |
Pinout & Package
Narrow-body SOIC-16 package (NB SOIC-16), RoHS-compliant, 260 °C peak reflow, 8 mm creepage distance per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDD1 Power Supply | Input-side supply pins - must be bypassed with 0.1 µF capacitor each to GND1 |
| 7, 14 | GND1 | Input-side ground reference - separate from GND2 to maintain galvanic isolation |
| 8, 9, 10, 11, 12, 13 | IN1–IN6 | Digital input signals referenced to VDD1/GND1 - Schmitt-triggered for >0.4 V hysteresis |
| 15, 16 | GND2 | Output-side ground - electrically isolated from GND1; required for VDD2 return path |
| 16 | VDD2 | Output-side supply - powers all six output drivers; independent voltage domain from VDD1 |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe default-low output | Guaranteed logic-low state on all six outputs when VDD1 is unpowered but VDD2 remains active - critical for safe shutdown in BMS fault conditions |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V (33 mA total for all six channels) - reduces thermal load in sealed EV power modules |
| Channel-to-channel skew | 0.5 ns typical - ensures synchronized sampling of multi-phase current sensors in motor FOC algorithms |
| Transient immunity | 50 kV/µs common-mode rejection - maintains data integrity during 100 V/ns SiC switch node transients |
| AEC-Q100 Grade 1 | Qualified for automotive applications including on-board chargers and traction inverters - full PPAP documentation support available |
Applications
| Motor Control Gate Drive Isolation | Battery Management System Monitoring |
|---|---|
|
Use Scenario: Isolating PWM signals from MCU to six IGBT/SiC gate drivers in a 3-phase inverter. IC Role / Device Role / Timing Role: Six-channel unidirectional isolator providing independent, low-skew timing paths for high-side and low-side gate signals. Use Value: 0.5 ns channel skew and 8 ns propagation delay enable precise dead-time control and prevent shoot-through in 20 kHz+ switching inverters. |
Use Scenario: Isolating voltage/current sensor ADC serial interfaces from high-voltage battery pack monitoring ICs. IC Role / Device Role / Timing Role: Digital isolator bridging isolated analog front-end domain to non-isolated host MCU domain via SPI. Use Value: 150 Mbps capability supports oversampled 16-bit ADC reads at >1 MSPS without bottlenecking data throughput. |
| On-Board Charger Communication | Traction Inverter Fault Signaling |
|
Use Scenario: Isolating CAN FD communication lines between OBC controller and vehicle ECU across 400 V DC bus. IC Role / Device Role / Timing Role: High-speed digital isolator protecting CAN transceiver PHY from ground potential differences and EMI. Use Value: 50 kV/µs CMTI prevents bit errors during high-dv/dt events in bidirectional AC/DC conversion stages. |
Use Scenario: Transmitting hardware fault signals (overtemperature, overcurrent, desaturation) from isolated gate driver ICs to system controller. IC Role / Device Role / Timing Role: Fail-safe default-low isolator ensuring fault line asserts logic-low immediately upon primary supply loss. Use Value: Default-low behavior eliminates need for external pull-down resistors and guarantees safe state during brown-out conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8660BB-B-IS1 | Industrial-grade (–I suffix), same 2.5 kVRMS rating, identical pinout and electrical specs except AEC-Q100 not applied | Lacks automotive qualification documentation (PPAP, IMDS); suitable for industrial inverters but not OEM automotive programs | Select SI8660BB-B-IS1 only for cost-sensitive industrial designs where automotive traceability is not required |
| ADUM6600ARWZ | Analog Devices' 6-channel isolator with integrated 5 V iso-power; higher 10.5 ns max propagation delay; no selectable fail-safe mode | Requires external fail-safe circuitry for default-low behavior; integrated power simplifies supply but increases thermal coupling risk | Choose ADUM6600ARWZ only if isolated power delivery is prioritized over timing precision and fail-safe configurability |
Compared with SI8660BB-AS1R, SI8660BB-B-IS1 omits automotive process controls and documentation but matches performance, while ADUM6600ARWZ trades timing accuracy and configurable fail-safe for integrated power - making SI8660BB-AS1R optimal for AEC-Q100-compliant, timing-critical traction systems.
Availability
SI8660BB-AS1R is available at Aetrix Electronics and suitable for automotive traction inverters, battery management systems, and on-board chargers requiring stable component supply with full automotive traceability and long-term lifecycle support.
Supply support for SI8660BB-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 specifically for high-reliability automotive and industrial isolation needs, emphasizing ultra-low power, AEC-Q100 compliance, and RF-based architecture for superior noise immunity in harsh EMI environments.
FAQ
What is the isolation rating and safety certification status of SI8660BB-AS1R?
SI8660BB-AS1R has a 2.5 kVRMS isolation rating and is certified to UL 1577, CSA Component Notice 5A, VDE 0884-10, and CQC GB4943.1 standards for reinforced insulation. These certifications validate its suitability for functional isolation in automotive battery systems up to 800 V DC bus voltage.
Does SI8660BB-AS1R require external startup initialization or configuration?
No, SI8660BB-AS1R requires no startup initialization. It begins transmitting valid data within 40 µs of VDD application due to its RF-modulation architecture. The device enters normal operation automatically once both VDD1 and VDD2 exceed their UVLO thresholds (2.24 V rising).
How does the fail-safe default-low feature operate in SI8660BB-AS1R?
In SI8660BB-AS1R, when VDD1 is unpowered but VDD2 remains active, all six outputs default to logic-low - a factory-set behavior confirmed by the "BB" and "-AS1" ordering code. This ensures safe gate driver disablement during MCU power loss in automotive fault scenarios.
What is the maximum achievable data rate and timing jitter for SI8660BB-AS1R?
SI8660BB-AS1R supports up to 150 Mbps with 350 ps peak eye diagram jitter. At 100 Mbps, propagation delay is 8.0 ns typical with 0.5 ns channel-to-channel skew - enabling precise synchronization in multi-sensor motor control systems.
Can SI8660BB-AS1R operate with mismatched supply voltages on VDD1 and VDD2?
Yes, SI8660BB-AS1R supports independent 2.5–5.5 V supplies on VDD1 and VDD2. For example, it can interface a 3.3 V MCU (VDD1) to a 5 V gate driver (VDD2) without level-shifting components, maintaining full timing specifications across the operating range.
SI8660BB-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:
- 6/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- 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
SI8660BB-AS1R FAQ
1.How can I place an order for SI8660BB-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8660BB-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 SI8660BB-AS1R reliable?
The price and inventory of SI8660BB-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8660BB-AS1R is usually 5 days.
3.What payment methods are accepted for SI8660BB-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8660BB-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8660BB-AS1R?
SI8660BB-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8660BB-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 SI8660BB-AS1R?
For technical support, including SI8660BB-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8660BB-AS1R requirements.
6.How does Aetrix verify that SI8660BB-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8660BB-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 SI8660BB-AS1R meets industry standards.
7.What is the process for return or replacement of SI8660BB-AS1R?
All SI8660BB-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8660BB-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 SI8660BB-AS1R part is unused and in its original packaging.
Return procedure for SI8660BB-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8660BB-AS1R 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
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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
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ISO7762FDBQR
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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