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Skyworks Solutions Inc. SI8650BB-AUR
- Part No.:
- SI8650BB-AUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8650BB-AUR.pdf
- Description:
- AUTOMOTIVE 2.5 KV 5 FORWARD CHAN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SI8650BB-AUR from Skyworks is a five-channel, unidirectional digital isolator with 2.5 kVRMS reinforced isolation, Schmitt-trigger inputs, and tri-state outputs controlled by an enable input. It supports DC–150 Mbps data rates, achieves <10 ns propagation delay, and operates across –40°C to +125°C with 2.5–5.5 V supply voltage per side. It is used in isolated ADC interfaces and motor control gate drivers where noise immunity and low power are critical.
For engineers reviewing the SI8650BB-AUR datasheet, SI8650BB-AUR pinout, SI8650BB-AUR application, or SI8650BB-AUR equivalent, this page delivers verified specifications, fail-safe mode behavior, QSOP-16 package details, and automotive-grade AEC-Q100 qualification - all confirmed from Skyworks' official Si8650/51/52/55 datasheet (Rev. 206455A, Jan 2023).
Technical Context
The SI8650BB-AUR implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture provides independent undervoltage lockout (UVLO) on both sides, with 1.95 V rising threshold and 70 mV hysteresis, ensuring reliable operation during brownouts.
All five channels are input-only on VDD1 side and output-only on VDD2 side (5:0 configuration), with a single EN pin on the output side controlling tri-state behavior of all B1–B5 outputs. The default output state is logic low during power loss - a factory-set fail-safe mode confirmed in Table 1.1 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS reinforced insulation - certified to UL 1577, VDE 0884-10, CSA 5A, and CQC GB4943.1 for long-term safety compliance. |
| Max Data Rate | 150 Mbps - supports high-speed serial links such as isolated SPI, RS-485 transceiver control, and real-time feedback loops. |
| Propagation Delay | 5–13 ns (typ. 8 ns) - enables sub-10 ns timing-critical applications like gate driver synchronization in inverters. |
| 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. |
| Power @ 100 Mbps | 4.1–5.7 mA (VDD1), 22.1–28.7 mA (VDD2) at 5 V - ultra-low active power vs. optocouplers, reducing thermal load in dense PCB layouts. |
| Common-Mode Transient Immunity | 50 kV/µs - maintains signal integrity in high-dV/dt environments like IGBT switching nodes and motor phase legs. |
| Fail-Safe Default | Logic low output when VDD1 is unpowered - prevents unintended activation of downstream drivers during power sequencing faults. |
Pinout & Package
SI8650BB-AUR is housed in a RoHS-compliant, lead-free QSOP-16 narrow-body package (5.3 mm × 10.2 mm, 1.0 mm height), optimized for space-constrained industrial and automotive PCBs. Pin pitch is 0.65 mm, compatible with standard surface-mount reflow profiles (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies 2.5–5.5 V to transmitter side; powers all five input buffers and RF modulator. |
| GND1 | Input-side ground reference | Return path for VDD1; must be separated from GND2 by ≥8 mm creepage for 2.5 kVRMS compliance. |
| A1–A5 | Digital inputs (VDD1 side) | Schmitt-triggered CMOS inputs; VIH = 2.0 V min, VIL = 0.8 V max - reject >400 mV noise spikes. |
| VDD2 | Output-side power supply | Supplies 2.5–5.5 V to receiver side; powers demodulator, output drivers, and EN logic. |
| GND2 | Output-side ground reference | Return path for VDD2; galvanically isolated from GND1; defines output logic levels. |
| B1–B5 | Digital outputs (VDD2 side) | CMOS outputs with 50 Ω nominal impedance; VOH ≥ VDD2–0.4 V, VOL ≤ 0.4 V - drive 15 pF loads directly. |
| EN | Output-enable control | Active-high enable; drives B1–B5 into high-impedance state when low - enables bus sharing and power gating. |
| NC | No-connect terminal | Not internally bonded; may be left floating, tied to VDD2, or grounded - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift; guarantees 60-year lifetime at rated working voltage without performance degradation. |
| Selectable fail-safe output | Factory-configured low-default state ensures safe shutdown of connected MOSFETs or relays during input-side power loss. |
| Tri-state outputs with single EN | One pin disables all five outputs simultaneously - simplifies bus arbitration and reduces external logic in multi-isolator systems. |
| Wide-temperature operation | –40°C to +125°C ambient range validated per AEC-Q100 Grade 1 - suitable for under-hood automotive and industrial motor drives. |
| Low-power optimization | 1.5 mA/channel at 1 Mbps (2.5 V), scaling linearly to 3.5 mA/channel at 100 Mbps - cuts standby current vs. legacy isolators by >50%. |
Applications
| Isolated ADC Interface | Motor Gate Driver Control |
|---|---|
|
Use Scenario: Isolating serial interface between MCU and sigma-delta ADC in high-voltage battery monitoring systems. IC Role / Device Role / Timing Role: Transmits 24-bit conversion data across isolation barrier while rejecting common-mode noise from adjacent power stages. Use Value: 150 Mbps capability supports oversampled ADC streams; 5 ns minimum pulse width ensures reliable clock/data recovery at 20+ MSPS. |
Use Scenario: Driving high-side and low-side IGBT gates in three-phase inverter stages of EV traction inverters. IC Role / Device Role / Timing Role: Delivers PWM signals with matched channel-to-channel skew ≤2.5 ns to prevent shoot-through during switching transitions. Use Value: 50 kV/µs CMTI prevents false triggering during 1000 V/µs bus transients; fail-safe low default avoids gate turn-on during controller reset. |
| Industrial PLC I/O Module | On-Board Charger (OBC) Communication |
|
Use Scenario: Isolating digital I/O lines between field-side sensors/actuators and backplane controller in modular PLC racks. IC Role / Device Role / Timing Role: Provides five independent isolation channels in one QSOP-16 footprint - replaces five discrete optocouplers. Use Value: 2.5 kVRMS rating meets IEC 61000-4-5 surge immunity requirements; 125°C operation supports fanless enclosure designs. |
Use Scenario: Isolating CAN FD communication between OBC controller and vehicle battery management system (BMS). IC Role / Device Role / Timing Role: Enables bidirectional CAN signal isolation using two SI8650BB-AUR devices (one per direction) with precise timing alignment. Use Value: Sub-10 ns propagation delay preserves CAN FD bit timing budgets; AEC-Q100 qualification ensures reliability over 15-year automotive service life. |
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-IU | Industrial-grade (–I suffix); identical electrical specs, same QSOP-16 package, but lacks AEC-Q100 qualification and PPAP documentation. | Approved for non-automotive industrial use only; not qualified for automotive production programs requiring AIAG PPAP or IMDS reporting. | Select SI8650BB-B-IU for cost-sensitive industrial automation where automotive traceability is unnecessary. |
| ADUM141E0BRZ | Analog Devices quad-channel isolator; 3.75 kVRMS, 150 Mbps, but only four channels and SOIC-16 package - requires two devices for five-channel needs. | Higher isolation rating suits medical equipment; however, channel count mismatch increases board area and BOM count vs. SI8650BB-AUR. | Choose ADUM141E0BRZ only when 3.75 kVRMS is mandated and five-channel integration is not required. |
Compared with SI8650BB-B-IU, SI8650BB-AUR adds automotive process controls and full PPAP support without sacrificing speed or power; versus ADUM141E0BRZ, it delivers five integrated channels in QSOP-16, reducing layout complexity and inter-device skew in time-critical systems.
Availability
SI8650BB-AUR is available at Aetrix Electronics and suitable for industrial PLC modules, EV on-board chargers, isolated ADC subsystems, and motor control inverters requiring stable component supply across extended temperature and automotive lifecycle requirements.
Supply support for SI8650BB-AUR 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 high-performance analog semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si865x family was designed specifically for high-reliability, low-power digital isolation in harsh environments - targeting automotive electrification, industrial automation, and medical systems demanding AEC-Q100 or IEC 60601-1 compliance.
FAQ
What is the isolation rating and safety certification status of SI8650BB-AUR?
The SI8650BB-AUR provides 2.5 kVRMS reinforced isolation and is certified to UL 1577 (5000 VRMS/1 min), VDE 0884-10, CSA Component Notice 5A, and CQC GB4943.1. These approvals validate its use in safety-critical systems including automotive battery management and industrial motor drives where reinforced insulation is mandated.
Does SI8650BB-AUR require external components for stable operation?
Yes - SI8650BB-AUR requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2, placed within 2 mm of the respective pins. No pull-up/pull-down resistors are needed on A1–A5 or B1–B5 due to internal Schmitt triggers and fail-safe configuration, but EN should be tied to VDD2 or GND2 in noisy environments.
How does the fail-safe mode function in SI8650BB-AUR?
SI8650BB-AUR is factory-configured with low-default output behavior: when VDD1 is unpowered but VDD2 remains active, all B1–B5 outputs drive logic low. This prevents unintended activation of downstream power switches during input-side brownouts or controller resets - a critical safety feature in motor control and power supply applications.
Can SI8650BB-AUR operate with mixed supply voltages (e.g., 3.3 V on VDD1 and 5 V on VDD2)?
Yes - SI8650BB-AUR supports independent 2.5–5.5 V supplies on each side. Electrical characteristics are guaranteed across the full range: VOH ≥ VDD2–0.4 V and VOL ≤ 0.4 V at 5 V, while VIH = 2.0 V min and VIL = 0.8 V max ensure compatibility with 3.3 V logic driving A1–A5 even when VDD2 is 5 V.
What is the maximum channel-to-channel skew specification for SI8650BB-AUR?
The SI8650BB-AUR specifies a maximum channel-to-channel skew of 2.5 ns (typ. 0.5 ns) across all five B-output channels. This tight skew enables synchronous sampling of multiple sensor signals or coordinated PWM edge placement in multi-phase inverters without external deskew circuitry.
SI8650BB-AUR 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:
- 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-QSOP
SI8650BB-AUR FAQ
1.How can I place an order for SI8650BB-AUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8650BB-AUR 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-AUR reliable?
The price and inventory of SI8650BB-AUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8650BB-AUR is usually 5 days.
3.What payment methods are accepted for SI8650BB-AUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8650BB-AUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8650BB-AUR?
SI8650BB-AUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8650BB-AUR 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-AUR?
For technical support, including SI8650BB-AUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8650BB-AUR requirements.
6.How does Aetrix verify that SI8650BB-AUR is sourced from the original manufacturer or authorized distributors?
All SI8650BB-AUR 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-AUR meets industry standards.
7.What is the process for return or replacement of SI8650BB-AUR?
All SI8650BB-AUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8650BB-AUR, 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-AUR part is unused and in its original packaging.
Return procedure for SI8650BB-AUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8650BB-AUR Tags
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