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Skyworks Solutions Inc. SI8650BD-ASR
- Part No.:
- SI8650BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8650BD-ASR.pdf
- Description:
- AUTOMOTIVE 5 KV 5-CHANNEL DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:2,356
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Product details
Overview
SI8650BD-ASR from Skyworks is a five-channel, unidirectional digital isolator with 5 kVRMS reinforced insulation, Schmitt-trigger inputs, and tri-state outputs controlled by an enable input. It operates from 2.5–5.5 V on both sides, supports up to 150 Mbps data rate, achieves <10 ns propagation delay, and is rated for –40 to +125 °C operation in automotive-grade wide-body SOIC-16 packaging.
For engineers reviewing the SI8650BD-ASR datasheet, SI8650BD-ASR pinout, SI8650BD-ASR application, or SI8650BD-ASR equivalent, this page delivers verified specifications, fail-safe mode behavior, CMTI of 50 kV/µs, automotive AEC-Q100 qualification, and precise channel-to-channel skew (≤2.5 ns) critical for motor control timing integrity and isolated ADC/DAC synchronization.
Technical Context
The SI8650BD-ASR implements RF-based on/off keying across a semiconductor isolation barrier-no startup initialization required. Its five channels are all input-side (VDD1) to output-side (VDD2) unidirectional, with no inputs on the output side (0 inputs on VDD2 per Ordering Guide), enabling clean signal directionality in isolated power domain interfaces.
It features dual undervoltage lockout (UVLO) monitors-one per supply rail-with 70 mV typical hysteresis, ensuring robust operation during brown-out conditions. The selectable fail-safe mode (Low default, per OPN suffix "BD") defines output state during input-side power loss while maintaining output-side drive capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional, all from VDD1 side to VDD2 side (0 inputs on VDD2) |
| Isolation Rating | 5000 VRMS reinforced insulation (UL, VDE, CQC certified) |
| Max Data Rate | 150 Mbps - supports high-speed serial links in battery management and traction inverters |
| Propagation Delay | 8 ns typical - enables sub-10 ns timing-critical feedback loops in motor control |
| CMTI | 50 kV/µs minimum - ensures noise immunity in high-dV/dt environments like SiC/GaN power stages |
| Supply Voltage | 2.5–5.5 V on both VDD1 and VDD2 - interoperable with 3.3 V and 5 V logic domains |
| Fail-Safe Default | Logic Low (ordering option "BD") - outputs go low when VDD1 is unpowered but VDD2 remains active |
Pinout & Package
SI8650BD-ASR is housed in a RoHS-compliant wide-body SOIC-16 package (WB SOIC-16), providing 8.3 mm creepage/clearance and reinforced insulation suitable for automotive and industrial safety-critical applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies power to transmitter side; UVLO monitoring ensures reliable startup at ≥2.24 V |
| GND1 | Input-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| IN1–IN5 | Digital input signals (VDD1 side) | Schmitt-trigger inputs with 0.44 V hysteresis enhance noise immunity in noisy motor drive environments |
| VDD2 | Output-side power supply | Supplies power to receiver side; independent UVLO allows asymmetric power sequencing |
| GND2 | Output-side ground reference | Return path for VDD2; galvanically isolated from GND1 |
| EN | Enable control (VDD2 side) | Drives all five outputs into high-impedance when low - enables bus sharing and power-saving modes |
| B1–B5 | Isolated digital outputs (VDD2 side) | 50 Ω nominal output impedance; requires controlled-impedance PCB routing above ~50 MHz |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup initialization and provides superior magnetic field immunity vs. pulse-based isolators |
| Selectably fail-safe output | "BD" suffix guarantees Low-default output during VDD1 loss - critical for safe shutdown in BMS |
| Tri-state output control | Single EN pin disables all five outputs simultaneously - simplifies bus arbitration in multi-isolator systems |
| Automotive-grade qualification | AEC-Q100 Grade 0 (–40 to +125 °C), PPAP-supported, IMDS/CAMDS compliant - qualified for EV traction systems |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V - reduces thermal load in densely packed OBC and inverter control boards |
Applications
| Battery Management Systems (BMS) | Traction Inverters |
|---|---|
|
Use Scenario: Isolating cell voltage monitor SPI buses and pack-level communication between MCU and isolated ADCs in high-voltage battery packs. IC Role / Device Role / Timing Role: Five-channel unidirectional isolator transmitting analog measurement data and status flags across 400–800 V DC barriers. Use Value: 5 kVRMS reinforced insulation and 50 kV/µs CMTI prevent corruption during fast-switching transients; fail-safe Low default ensures safe fault reporting during partial power loss. |
Use Scenario: Transmitting PWM gate-drive signals and current-sense feedback from isolated shunt amplifiers to MCU in 3-phase SiC inverter stacks. IC Role / Device Role / Timing Role: High-speed, low-skew isolator delivering synchronized gate commands with ≤2.5 ns channel-to-channel skew. Use Value: 150 Mbps capability supports advanced modulation schemes; 8 ns typical propagation delay enables tight current-loop bandwidths >20 kHz. |
| On-Board Chargers (OBC) | Industrial PLC I/O Modules |
|
Use Scenario: Isolating CAN FD communication, AC line sensing, and DC-link voltage monitoring in bidirectional OBCs interfacing with vehicle and grid. IC Role / Device Role / Timing Role: Signal-level isolator bridging safety-critical HV and LV domains while supporting multiple independent data paths. Use Value: Dual-supply flexibility (2.5–5.5 V) allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends; automotive-grade reliability ensures 15+ year field life. |
Use Scenario: Providing isolated digital input conditioning for 24 V DC sensor signals and isolated output driving for solenoid/valve control in factory automation cabinets. IC Role / Device Role / Timing Role: Robust industrial isolator with Schmitt-trigger inputs tolerating long cable runs and EMI-rich factory floors. Use Value: 0.44 V input hysteresis rejects common-mode noise; wide temperature range (–40 to +125 °C) sustains operation in uncooled control enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8650BD-BIS | Industrial-grade (–I suffix), same pinout/package, identical electrical specs except AEC-Q100 not applied | Lacks automotive PPAP documentation, IMDS/CAMDS support, and zero-defect manufacturing flow | Preferred for cost-sensitive industrial designs where automotive qualification is unnecessary |
| ADUM141E0BRZ | Four-channel, 100 Mbps max, 2.5–5.5 V, 3.75 kVRMS, non-automotive, different pinout (SOIC-16 narrow) | Lower channel count and isolation rating; not AEC-Q100 qualified; lacks fail-safe Low option | Consider only if design requires fewer channels and lower isolation; requires PCB redesign due to pinout mismatch |
Compared with SI8650BD-BIS, SI8650BD-ASR adds full automotive process controls and documentation without changing footprint or timing. Against ADUM141E0BRZ, SI8650BD-ASR delivers higher channel density, 50% greater data rate, 33% higher isolation, and guaranteed fail-safe behavior-justifying its use in safety-critical EV subsystems.
Availability
SI8650BD-ASR is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and industrial PLC I/O modules requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8650BD-ASR 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 wireless, automotive, and industrial markets.
The SI8650BD-ASR belongs to Skyworks' Si86xx ultra-low-power digital isolator family, engineered specifically for high-reliability automotive electrification and industrial automation where safety certification, timing precision, and noise immunity are non-negotiable.
FAQ
What is the isolation rating and safety certification status of SI8650BD-ASR?
The SI8650BD-ASR provides 5000 VRMS reinforced insulation and is certified to UL 1577, VDE 0884-10, CSA 5A, and CQC GB4943.1 standards. These certifications validate its suitability for automotive battery systems and industrial equipment requiring reinforced insulation per IEC 62368-1 and IEC 60601-1. SI8650BD-ASR meets all requirements for functional safety in ASIL-B–capable architectures.
Does SI8650BD-ASR support fail-safe operation, and how is it configured?
Yes, SI8650BD-ASR has a factory-configured fail-safe mode that drives all outputs Low when VDD1 is unpowered but VDD2 remains active. This behavior is fixed by the "BD" ordering code and does not require external configuration. It ensures predictable shutdown states in battery management systems during input-side power faults, directly supporting ISO 26262 fault response requirements.
What is the maximum data rate and propagation delay performance of SI8650BD-ASR?
The SI8650BD-ASR supports up to 150 Mbps data rate with 8 ns typical propagation delay (tPLH/tPHL) and ≤2.5 ns channel-to-channel skew. These values are guaranteed over the full –40 to +125 °C temperature range and across supply voltages from 2.5 V to 5.5 V. This performance enables real-time current-loop control in high-frequency SiC inverters using the SI8650BD-ASR.
How does the enable (EN) pin function on SI8650BD-ASR?
The EN pin on SI8650BD-ASR is located on the VDD2 side and controls all five outputs simultaneously. When EN is logic Low, outputs B1–B5 enter high-impedance state; when EN is High or floating (internally pulled up), outputs follow their respective inputs. This feature allows dynamic bus sharing and low-power sleep modes without altering signal routing. SI8650BD-ASR's EN pin draws only 2 µA typical current.
Is SI8650BD-ASR compatible with 3.3 V and 5 V logic systems?
Yes, SI8650BD-ASR operates with VDD1 and VDD2 independently configurable from 2.5 V to 5.5 V. It fully supports 3.3 V microcontrollers on one side and 5 V analog circuitry on the other, with VIH/VIL thresholds designed for compatibility across both logic families. Input hysteresis (0.44 V typical) and 50 Ω output impedance further ensure robust interoperation in mixed-voltage industrial and automotive designs.
SI8650BD-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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:
- 5000Vrms
- 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
SI8650BD-ASR FAQ
1.How can I place an order for SI8650BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8650BD-ASR 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 SI8650BD-ASR reliable?
The price and inventory of SI8650BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8650BD-ASR is usually 5 days.
3.What payment methods are accepted for SI8650BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8650BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8650BD-ASR?
SI8650BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8650BD-ASR 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 SI8650BD-ASR?
For technical support, including SI8650BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8650BD-ASR requirements.
6.How does Aetrix verify that SI8650BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI8650BD-ASR 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 SI8650BD-ASR meets industry standards.
7.What is the process for return or replacement of SI8650BD-ASR?
All SI8650BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8650BD-ASR, 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 SI8650BD-ASR part is unused and in its original packaging.
Return procedure for SI8650BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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