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Skyworks Solutions Inc. SI8650BB-AS1
- Part No.:
- SI8650BB-AS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8650BB-AS1.pdf
- Description:
- AUTOMOTIVE 2.5 KV 5 FORWARD CHAN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SI8650BB-AS1 from Skyworks is a five-channel, unidirectional digital isolator with 5 kVRMS reinforced insulation, 150 Mbps data rate, <10 ns propagation delay, and fail-safe low-default output state. It operates across –40 to +125 °C and supports 2.5–5.5 V dual supplies, enabling robust signal isolation in high-voltage motor control and battery management systems.
For engineers reviewing the SI8650BB-AS1 datasheet, SI8650BB-AS1 pinout, SI8650BB-AS1 application, or SI8650BB-AS1 equivalent, this page delivers verified specifications, automotive-grade qualification (AEC-Q100), narrow-body SOIC-16 package details, and real-world timing and power performance at 100 Mbps and 1 Mbps operation.
Technical Context
The SI8650BB-AS1 implements RF-based on/off keying across a semiconductor isolation barrier-no startup initialization required. Its architecture delivers precise timing (0.5 ns channel-channel skew, 2 ns propagation delay skew) and high noise immunity via Schmitt-trigger inputs and 50 kV/µs CMTI.
All five channels are input-side (VDD1) to output-side (VDD2) unidirectional, with a single enable input (EN) on the output side controlling tri-state output drive. The device features selectable fail-safe mode (low default during power loss) and undervoltage lockout (UVLO) on both sides independently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional, all from input side (VDD1) to output side (VDD2) |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and isolated ADC/DAC links |
| Propagation Delay | 5–13 ns - enables tight timing budgets in real-time motor control and power converter feedback loops |
| Isolation Rating | 5 kVRMS reinforced - certified to UL, VDE, CSA, and CQC standards for industrial and automotive safety-critical systems |
| Supply Voltage | 2.5–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog subsystems |
| Power @ 100 Mbps | 4.1–28.7 mA per supply - 5.5 mA/channel typical at 5 V, enabling ultra-low-power operation in battery-backed systems |
| Fail-Safe Default | Low output state when VDD1 unpowered - ensures safe shutdown in BMS and OBC applications during input-side fault |
| Operating Temp | –40 to +125 °C - qualified for under-hood automotive use and industrial ambient conditions |
Pinout & Package
SI8650BB-AS1 is housed in a RoHS-compliant narrow-body SOIC-16 package (NB SOIC-16), with 1.27 mm pitch, 10.3 mm × 7.5 mm footprint, and creepage/clearance compliant with reinforced insulation requirements up to 5 kVRMS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies 2.5–5.5 V to transmitter side; UVLO threshold 2.24 V (typ) |
| GND1 | Input-side ground reference | Return path for VDD1; must be separated from GND2 by ≥8 mm creepage for 5 kVRMS compliance |
| IN1–IN5 | Digital input signals (side A) | Schmitt-trigger inputs with 0.44 V hysteresis; VIH = 2.0 V min, VIL = 0.8 V max |
| VDD2 | Output-side power supply | Supplies 2.5–5.5 V to receiver side; independent UVLO monitoring |
| GND2 | Output-side ground reference | Isolated return for VDD2; forms safety barrier with GND1 |
| EN | Output-enable control | Active-high; drives outputs B1–B5 into high-impedance when low - enables multiplexing or power-gating |
| B1–B5 | Isolated digital outputs (side B) | 50 Ω nominal output impedance; VOH = VDD2 – 0.4 V (min), VOL = 0.4 V (max) at 4 mA load |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift of optocouplers; no start-up delay or initialization sequence required |
| Tri-state output control | Single EN pin disables all five outputs simultaneously into high-impedance - simplifies bus arbitration and reduces standby current |
| Automotive qualification | AEC-Q100 Grade 0 (–40 to +150 °C junction) and AIAG-compliant PPAP support - validated for traction inverters and on-board chargers |
| Precision timing | 0.5 ns channel-channel skew and 2 ns propagation delay skew - maintains signal integrity in multi-channel feedback and synchronization |
| Ultra-low power | 1.6 mA/channel at 1 Mbps (5 V), 3.5 mA/channel at 100 Mbps (2.5 V) - extends runtime in always-on battery monitoring circuits |
| High CMTI | 50 kV/µs common-mode transient immunity - prevents corruption during fast-switching events in SiC/GaN power stages |
Applications
| Motor Control Feedback | Isolated ADC Interface |
|---|---|
|
Use Scenario: Isolating gate driver enable signals and current-sense amplifier outputs in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Five-channel unidirectional isolator transmitting PWM enable, fault flags, and analog monitor signals across 5 kVRMS barrier. Use Value: Enables compact, high-reliability designs meeting IEC 61800-5-1 reinforced insulation requirements without external level-shifting or timing compensation. |
Use Scenario: Connecting isolated sigma-delta ADCs (e.g., AMC1306) to MCU SPI interfaces in servo drives. IC Role / Device Role / Timing Role: Transmitting serialized ADC data and clock signals with sub-10 ns skew to preserve sampling accuracy. Use Value: Maintains 16-bit effective resolution by limiting channel skew to 0.5 ns - critical for multi-axis position synchronization. |
| Battery Management System | On-Board Charger Control |
|
Use Scenario: Isolating cell voltage monitoring ICs and pack contactor control logic in EV battery packs. IC Role / Device Role / Timing Role: Delivering fail-safe low-default outputs to disable contactors during VDD1 loss (e.g., cell stack disconnect). Use Value: Guarantees safe open-circuit state during input-side faults - satisfies ISO 26262 ASIL-C functional safety requirements. |
Use Scenario: Isolating AC-DC controller signals (PFC, LLC) from vehicle CAN and MCU domains in 11 kW OBCs. IC Role / Device Role / Timing Role: Transferring enable, fault, and phase-sync signals across 5 kVRMS barrier with <13 ns propagation delay. Use Value: Supports 100+ kHz switching frequencies while maintaining timing margins for zero-voltage switching (ZVS) control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8650BB-B-IS1 | Industrial-grade (–I suffix); identical electrical specs and pinout; no AEC-Q100 qualification or PPAP support | Lacks automotive process flow, IMDS/CAMDS listing, and zero-defect manufacturing controls | Select SI8650BB-B-IS1 only for non-automotive industrial use where AEC-Q100 is not mandated. |
| ADUM141E0BRZ | Four-channel, 150 Mbps, 3.75 kVRMS; different pinout (SOIC-16 wide); higher 100 Mbps supply current (12.5 mA/channel) | Not automotive-qualified; lacks fail-safe low-default option and 5 kVRMS rating | Use ADUM141E0BRZ only if four channels suffice and 5 kVRMS reinforcement is not required. |
Compared with SI8650BB-B-IS1, SI8650BB-AS1 adds automotive process controls and documentation without sacrificing performance; versus ADUM141E0BRZ, it provides an extra channel, higher isolation, and fail-safe behavior essential for EV powertrain systems.
Availability
SI8650BB-AS1 is available at Aetrix Electronics and suitable for battery management systems, on-board chargers, and traction inverter control requiring stable component supply across automotive production lifecycles.
Supply support for SI8650BB-AS1 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 Si865x family was designed specifically for high-reliability, high-speed digital isolation in automotive and industrial power systems-emphasizing low power, precise timing, and safety certification.
FAQ
What is the isolation rating and safety certification status of SI8650BB-AS1?
SI8650BB-AS1 provides 5 kVRMS reinforced insulation and is certified to UL 1577, VDE 0884-10, CSA Component Notice 5A, and CQC GB4943.1. These approvals validate its use in safety-critical automotive and industrial applications requiring reinforced insulation per IEC 62368-1 and IEC 60601-1.
Does SI8650BB-AS1 support fail-safe operation, and how is it configured?
Yes, SI8650BB-AS1 has a factory-configured fail-safe mode that defaults outputs to logic low when VDD1 is unpowered. This behavior is fixed per ordering part number and cannot be changed in-circuit. The "BB" suffix denotes low-default configuration, confirmed in Table 1.1 of the datasheet.
What are the supply voltage requirements for SI8650BB-AS1, and can VDD1 and VDD2 operate at different voltages?
SI8650BB-AS1 supports independent 2.5–5.5 V supplies on VDD1 and VDD2. They may operate at different voltages (e.g., 3.3 V on VDD1, 5 V on VDD2) without level-shifting circuitry, enabling direct interfacing between mixed-voltage domains in motor control and power conversion systems.
How does the EN pin function on SI8650BB-AS1, and what happens to outputs when EN is low?
The EN pin on SI8650BB-AS1 is an active-high enable input on the output side (VDD2). When EN is low, all five outputs (B1–B5) enter high-impedance state. This allows bus sharing and reduces dynamic power consumption during idle periods without affecting input-side operation.
Is SI8650BB-AS1 compatible with standard SOIC-16 PCB footprints, and which variant does it use?
SI8650BB-AS1 uses the narrow-body SOIC-16 package (NB SOIC-16), with 7.5 mm body width and 1.27 mm lead pitch. It is compatible with JEDEC MS-012AC footprints and requires no layout changes versus other NB SOIC-16 isolators - but differs from wide-body variants (e.g., WB SOIC-16) in creepage and thermal profile.
SI8650BB-AS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 5
- Inputs - Side 1/Side 2:
- 5/0
- 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
SI8650BB-AS1 FAQ
1.How can I place an order for SI8650BB-AS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8650BB-AS1 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 SI8650BB-AS1 reliable?
The price and inventory of SI8650BB-AS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8650BB-AS1 is usually 5 days.
3.What payment methods are accepted for SI8650BB-AS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8650BB-AS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8650BB-AS1?
SI8650BB-AS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8650BB-AS1 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 SI8650BB-AS1?
For technical support, including SI8650BB-AS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8650BB-AS1 requirements.
6.How does Aetrix verify that SI8650BB-AS1 is sourced from the original manufacturer or authorized distributors?
All SI8650BB-AS1 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 SI8650BB-AS1 meets industry standards.
7.What is the process for return or replacement of SI8650BB-AS1?
All SI8650BB-AS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8650BB-AS1, 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 SI8650BB-AS1 part is unused and in its original packaging.
Return procedure for SI8650BB-AS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8650BB-AS1 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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