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Skyworks Solutions Inc. SI8662BB-B-IUR
- Part No.:
- SI8662BB-B-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8662BB-B-IUR.pdf
- Description:
- DGTL ISO 2500VRMS 6CH GP 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
SI8662BB-B-IUR from Skyworks is a six-channel, ultra-low-power digital isolator with 4 input channels on VDD1 side and 2 output channels on VDD2 side, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 2.5 kVRMS isolation rating in QSOP-16 package. It features Schmitt-trigger inputs, selectable fail-safe low-default output mode, and operates across –40 to 125 °C for industrial motor control and isolated ADC interfaces.
For engineers reviewing the SI8662BB-B-IUR datasheet, SI8662BB-B-IUR pinout, SI8662BB-B-IUR application, or SI8662BB-B-IUR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in isolated power and automotive BMS, and confirmed alternative options with documented functional and packaging differences.
Technical Context
The SI8662BB-B-IUR implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-supply architecture (VDD1/VDD2) supports independent 2.5–5.5 V operation per side, with undervoltage lockout (UVLO) thresholds at 2.24 V (rising) and 2.16 V (falling) to ensure clean power sequencing.
Each channel integrates Schmitt-trigger inputs (VT+ = 1.67 V typ, VT– = 1.23 V typ), 50 Ω nominal output impedance, and failsafe logic that holds outputs low when VDD1 is unpowered-enabling safe default behavior in isolated gate driver and battery management signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 150 Mbps - supports high-speed serial communication in motor control feedback loops and isolated SPI interfaces. |
| Propagation Delay | 8.0 ns typical - enables tight timing budgets in real-time control systems with sub-10 ns channel-to-channel skew. |
| Isolation Rating | 2.5 kVRMS - certified to UL 1577, VDE 0884-10, and IEC 62368-1 for reinforced insulation in industrial power supplies. |
| Supply Voltage Range | 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 Default | Low output state - ensures safe shutdown of downstream drivers during input-side power loss in BMS and inverter control. |
| Common-Mode Transient Immunity | 50 kV/µs - maintains signal integrity in high-dV/dt environments like traction inverters and switch-mode power supplies. |
| Operating Temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
SI8662BB-B-IUR uses a RoHS-compliant 16-pin QSOP package (5.3 mm × 10.2 mm, 1.0 mm height) with 0.635 mm pitch and 8 mm creepage distance. Pin numbering follows standard QSOP convention with VDD1/GND1 on left side (pins 1–8) and VDD2/GND2 on right side (pins 9–16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 4, 6 | VDD1 supply | Input-side power rail (2.5–5.5 V); requires 0.1 µF bypass capacitor per supply pin. |
| 2, 5, 7, 8 | Input channels A1–A4 | Logic inputs with Schmitt-trigger thresholds (1.23–1.67 V); tolerate slow edges and noise. |
| 9, 11 | VDD2 supply | Output-side power rail (2.5–5.5 V); independent of VDD1 for galvanic isolation. |
| 10, 12 | Output channels B1–B2 | CMOS outputs with 50 Ω impedance; drive 15 pF loads at 150 Mbps with <4 ns rise/fall times. |
| 13, 14, 15, 16 | GND1, GND2 | Separate ground domains for input and output sides; no internal connection between them. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift; achieves 60-year life at rated working voltage with stable timing over temperature. |
| Selectable fail-safe mode | Factory-configured low-default output ensures predictable state during VDD1 brownout-critical for safety-critical gate drivers. |
| Ultra-low power at 100 Mbps | 12.8 mA (VDD1) + 19.4 mA (VDD2) typ at 5 V - reduces thermal load in dense PCB layouts and extends battery runtime in portable BMS. |
| High CMTI immunity | 50 kV/µs common-mode transient rejection - prevents false triggering in 1000 V bus applications like EV traction inverters. |
| DC to 150 Mbps operation | No minimum data rate requirement; supports both burst-mode sensor reads and continuous high-speed encoder feedback. |
Applications
| Motor Control Feedback Isolation | Isolated ADC Interface |
|---|---|
|
Use Scenario: Isolating encoder or resolver signals from MCU in servo drives operating at 400 V DC bus. IC Role / Device Role / Timing Role: Six-channel isolator routes 4 position feedback bits and 2 direction/status lines across 2.5 kVRMS barrier with <10 ns skew. Use Value: Enables precise current-loop timing with 150 Mbps bandwidth and 50 kV/µs CMTI to suppress inverter switching noise. |
Use Scenario: Connecting isolated sigma-delta ADC (e.g., AMC1306) to host processor in industrial power metering. IC Role / Device Role / Timing Role: Provides 4-bit serial data + 2-bit clock synchronization across isolation barrier with sub-10 ns propagation delay. Use Value: Maintains ADC sample integrity by eliminating ground loop errors and rejecting >1500 V common-mode transients. |
| Battery Management System (BMS) | Traction Inverter Gate Drive |
|
Use Scenario: Isolating cell voltage monitoring ICs (e.g., BQ796xx) from system controller in 800 V BEV packs. IC Role / Device Role / Timing Role: Routes 4 analog monitor enable signals and 2 fault status flags across reinforced insulation barrier. Use Value: Ensures fail-safe shutdown via low-default outputs when cell monitor supply fails-meeting ASIL-B functional safety requirements. |
Use Scenario: Driving isolated gate drivers (e.g., Si823x) for SiC MOSFETs in 1200 V traction inverters. IC Role / Device Role / Timing Role: Delivers 2 PWM signals with matched propagation delay (<2.5 ns skew) and 50 kV/µs noise immunity. Use Value: Prevents shoot-through by guaranteeing simultaneous edge delivery to high/low-side drivers despite 1000 V/ns dV/dt. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM160N0BRZ-RL7 | 6-channel, 150 Mbps, 3.75 kVRMS, SOIC-16 wide-body; higher isolation but larger footprint and 20% higher power at 100 Mbps. | Preferred where reinforced insulation >3.75 kVRMS is mandated (e.g., medical IEC 60601-1), not required for 2.5 kVRMS industrial use. | Choose ADUM160N0BRZ-RL7 only if regulatory certification demands >3.75 kVRMS; otherwise SI8662BB-B-IUR offers better power density in QSOP. |
| ISO6762FDWR | 6-channel, 100 Mbps, 5 kVRMS, SOIC-16 wide-body; lower speed but highest isolation rating and AEC-Q100 Grade 0 qualification. | Suitable for automotive traction inverter control where 5 kVRMS and –40 to 150 °C operation are mandatory. | Choose ISO6762FDWR for AEC-Q100 Grade 0 or 5 kVRMS compliance; SI8662BB-B-IUR fits cost-sensitive industrial designs needing 150 Mbps in compact QSOP. |
Compared with ADUM160N0BRZ-RL7 and ISO6762FDWR, SI8662BB-B-IUR delivers optimal balance of 150 Mbps speed, 2.5 kVRMS certification, and QSOP-16 footprint-making it ideal for space-constrained industrial motor drives and BMS where 100–150 Mbps bandwidth and fail-safe low defaults are prioritized over maximum isolation voltage.
Availability
SI8662BB-B-IUR is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, and isolated ADC/DAC interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SI8662BB-B-IUR 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 leader in analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for high-reliability applications.
The Si866x family was engineered specifically for industrial and automotive isolation needs-delivering ultra-low power, high CMTI, and fail-safe operation in compact packages for motor drives, BMS, and power conversion systems.
FAQ
What is the default output state of SI8662BB-B-IUR during input-side power loss?
The SI8662BB-B-IUR is configured with a low-default fail-safe mode: when VDD1 is unpowered and VDD2 remains active, all output channels (B1–B2) are held low. This behavior is factory-set per the "BB" ordering code and ensures safe shutdown of downstream circuitry in applications like gate driver control and BMS fault signaling.
Does SI8662BB-B-IUR require external components for basic operation?
Yes-SI8662BB-B-IUR requires two 0.1 µF ceramic bypass capacitors: one between VDD1 and GND1 (pins 1/3/4/6 and 2/5/7/8), and another between VDD2 and GND2 (pins 9/11 and 10/12/13/14/15/16). No pull-up/pull-down resistors are needed, as Schmitt-trigger inputs and fail-safe logic are integrated.
Can SI8662BB-B-IUR operate with different supply voltages on VDD1 and VDD2 sides?
Yes-SI8662BB-B-IUR supports independent 2.5–5.5 V operation on VDD1 and VDD2. For example, VDD1 may be 3.3 V (for MCU interface) while VDD2 is 5 V (for driving optocoupler-replacement logic), enabling seamless level translation without external buffers.
What safety certifications apply to SI8662BB-B-IUR?
SI8662BB-B-IUR is certified to UL 1577 (2.5 kVRMS, 1 min), VDE 0884-10 (reinforced insulation), CSA Component Acceptance Notice 5A, and IEC 62368-1. These approvals validate its use in industrial equipment and EV charging systems requiring reinforced insulation at 2.5 kVRMS.
How does SI8662BB-B-IUR achieve 50 kV/µs common-mode transient immunity?
SI8662BB-B-IUR achieves 50 kV/µs CMTI through its RF-modulated isolation architecture and optimized internal layout-rejecting fast transients induced by high dV/dt switching events. This is measured per Figure 4.2 in the datasheet with 1500 V common-mode step and verified across –40 to 125 °C.
SI8662BB-B-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 4/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 4ns, 4ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
SI8662BB-B-IUR FAQ
1.How can I place an order for SI8662BB-B-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8662BB-B-IUR 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 SI8662BB-B-IUR reliable?
The price and inventory of SI8662BB-B-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8662BB-B-IUR is usually 5 days.
3.What payment methods are accepted for SI8662BB-B-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8662BB-B-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8662BB-B-IUR?
SI8662BB-B-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8662BB-B-IUR 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 SI8662BB-B-IUR?
For technical support, including SI8662BB-B-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8662BB-B-IUR requirements.
6.How does Aetrix verify that SI8662BB-B-IUR is sourced from the original manufacturer or authorized distributors?
All SI8662BB-B-IUR 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 SI8662BB-B-IUR meets industry standards.
7.What is the process for return or replacement of SI8662BB-B-IUR?
All SI8662BB-B-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8662BB-B-IUR, 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 SI8662BB-B-IUR part is unused and in its original packaging.
Return procedure for SI8662BB-B-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8662BB-B-IUR 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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