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Skyworks Solutions Inc. SI8650BB-B-IS1R
- Part No.:
- SI8650BB-B-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8650BB-B-IS1R.pdf
- Description:
- DGTL ISO 2500VRMS 5CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,866
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Product details
Overview
SI8650BB-B-IS1R from Skyworks is a five-channel, unidirectional digital isolator with 2.5 kVRMS isolation rating, 150 Mbps data rate, <10 ns propagation delay, and fail-safe low-default output state. It operates across 2.5–5.5 V supply rails on both sides and supports industrial automation, isolated power supplies, and motor control systems requiring robust galvanic separation.
For engineers reviewing the SI8650BB-B-IS1R datasheet, SI8650BB-B-IS1R pinout, SI8650BB-B-IS1R application, or SI8650BB-B-IS1R equivalent, key selection criteria include its narrow-body SOIC-16 package, Schmitt-trigger input noise immunity, tri-state enable control, and AEC-Q100-compliant automotive-grade variants for BMS and traction inverter designs.
Technical Context
The SI8650BB-B-IS1R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling deterministic timing. Its architecture delivers sub-10 ns propagation delay with ≤0.5 ns channel-to-channel skew and 50 kV/µs common-mode transient immunity (CMTI), critical for high-noise motor drive and SMPS feedback loops.
All five channels are input-only on VDD1 side and output-only on VDD2 side, with a single EN2 enable controlling all outputs. The device features undervoltage lockout (UVLO) on both sides, Schmitt-trigger inputs (0.44 V hysteresis), and failsafe operation where outputs default to logic low during VDD1 loss while VDD2 remains powered.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional channels (VDD1→VDD2 only); enables isolated serial bus or parallel signal transmission without bidirectional complexity. |
| Isolation Rating | 2.5 kVRMS (1 min); certified to UL 1577, CSA 5A, VDE 0884-10, and IEC 62368-1 for reinforced insulation in industrial end equipment. |
| Max Data Rate | 150 Mbps; supports high-speed SPI, RS-485 transceiver isolation, and real-time encoder feedback in servo drives. |
| Propagation Delay | 5–13 ns (typ. 8 ns); ensures tight timing alignment in closed-loop control systems with minimal latency impact. |
| Supply Voltage | 2.5–5.5 V per side; allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Fail-Safe Output | Default-low (ordering option); guarantees safe shutdown state in isolated gate drivers or safety-critical enable paths when input power fails. |
| CMTI | ≥35 kV/µs (typ. 50 kV/µs); suppresses noise-induced glitches in high-dV/dt environments like IGBT switching nodes. |
Pinout & Package
Narrow-body SOIC-16 (NB SOIC-16) package with 1.27 mm pitch, RoHS-compliant, JEDEC-standard reflow profile (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for input logic and RF transmitter; bypass with 0.1 µF capacitor near pin. |
| GND1 | Input-side ground | Reference for all input signals and VDD1; must be separated from GND2 by creepage/clearance. |
| IN1–IN5 | Digital inputs | CMOS/Schmitt-trigger inputs (VIH = 2.0 V, VIL = 0.8 V); tolerate slow edges and reject >0.4 V noise. |
| VDD2 | Output-side supply | Power for RF receiver and output drivers; independent of VDD1 for true galvanic isolation. |
| GND2 | Output-side ground | Reference for outputs and VDD2; forms isolation barrier with GND1. |
| EN2 | Output enable | Active-high control for all five outputs; drives outputs to high-impedance when low (tri-state mode). |
| OUT1–OUT5 | Digital outputs | Push-pull CMOS outputs (VOH ≥ VDD2–0.4 V, VOL ≤ 0.4 V); 50 Ω nominal impedance for controlled-impedance PCB routing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power at 100 Mbps | 5.7 mA (VDD1) + 28.7 mA (VDD2) at 5 V - enables thermally constrained isolated ADC/DAC interfaces. |
| Precision timing | 0.5 ns max channel-to-channel skew and 2 ns propagation delay skew - preserves signal integrity in multi-channel timing-critical systems. |
| Fail-safe configuration | Low-default output state (per ordering code BB) - ensures safe deactivation of downstream power stages during input-side brownout. |
| Robust noise immunity | 50 kV/µs CMTI and Schmitt-trigger inputs - maintains reliable operation in 600 V DC bus environments with fast-switching SiC MOSFETs. |
| Wide temperature range | –40 °C to +125 °C operation - qualified for under-hood automotive and industrial ambient conditions without derating. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
|
Use Scenario: Gate driver isolation for three-phase IGBT inverters in variable-frequency drives. IC Role / Device Role / Timing Role: Transmits PWM signals across isolation barrier with <10 ns delay and 0.5 ns skew to maintain phase alignment across six gate drivers. Use Value: Enables precise dead-time control and prevents shoot-through faults caused by timing mismatch or noise-induced glitches. |
Use Scenario: Feedback signal isolation in 3 kW LLC resonant converter with optocoupler replacement. IC Role / Device Role / Timing Role: Isolates voltage-sense and current-sense signals from secondary-side controller to primary-side PWM IC. Use Value: Delivers 150 Mbps bandwidth for fast transient response and 50 kV/µs CMTI to reject switching noise from 100 kHz+ resonant tank. |
| Medical Isolated Data Acquisition | Battery Management System (BMS) |
|
Use Scenario: Isolation between patient-connected analog front-end and host MCU in portable ECG monitor. IC Role / Device Role / Timing Role: Transfers digitized sensor data across reinforced insulation barrier compliant with IEC 60601-1. Use Value: Meets 2.5 kVRMS medical safety requirements while supporting low-power 3.3 V operation and sub-10 ns latency for real-time waveform display. |
Use Scenario: Cell voltage monitoring isolation in 400 V EV battery pack with distributed sensing architecture. IC Role / Device Role / Timing Role: Isolates UART or SPI communication between cell monitor ICs and main BMS controller across 200+ V potential differences. Use Value: Provides AEC-Q100-qualified reliability and fail-safe low output to disable charging FETs if cell monitor supply fails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140E0BRZ | 4-channel, 100 Mbps, 2.5 kVRMS, 3.3 V only, no fail-safe option | Lacks fifth channel and configurable fail-safe; requires external pull-down for low-default behavior | Choose when four channels suffice and system-level fail-safe can be implemented externally. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, 2.25–5.5 V, no enable pin | Lower speed, higher isolation rating, fixed output state (no fail-safe selection), no tri-state control | Prefer for cost-sensitive, lower-bandwidth applications requiring 5 kVRMS but not high-speed or enable functionality. |
Compared with ADUM140E0BRZ and ISO6741QDWR, the SI8650BB-B-IS1R uniquely combines five isolated channels, 150 Mbps speed, programmable fail-safe output, and tri-state enable in a narrow-body SOIC-16-making it optimal for space-constrained, high-reliability industrial and automotive signal isolation where channel count and deterministic safety behavior are critical.
Availability
SI8650BB-B-IS1R is available at Aetrix Electronics and suitable for industrial motor control, isolated power supplies, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI8650BB-B-IS1R 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 for high-reliability galvanic isolation in harsh electromagnetic environments-targeting industrial automation, medical electronics, and electric vehicle power systems where safety certification and timing precision are mandatory.
FAQ
What is the isolation rating and safety certification status of the SI8650BB-B-IS1R?
The SI8650BB-B-IS1R provides 2.5 kVRMS isolation rated for 1 minute and is certified to UL 1577, CSA Component Notice 5A, VDE 0884-10, and IEC 62368-1 for reinforced insulation. These approvals validate its use in industrial and medical equipment meeting IEC 61010-1 and IEC 60601-1 safety standards. SI8650BB-B-IS1R meets all required creepage and clearance distances for its NB SOIC-16 package.
Does the SI8650BB-B-IS1R require startup initialization or configuration?
No, the SI8650BB-B-IS1R requires no startup initialization or configuration. Its RF-based isolation architecture begins transmitting valid data within 40 µs of power application, with outputs following input states after UVLO release. This zero-config behavior simplifies firmware design and eliminates boot-time uncertainty in safety-critical systems using SI8650BB-B-IS1R.
How does the fail-safe output function in the SI8650BB-B-IS1R?
The SI8650BB-B-IS1R is ordered with "BB" suffix indicating a low-default fail-safe mode: when VDD1 is unpowered but VDD2 remains active, all five outputs drive logic low. This behavior is hardwired via internal pull-downs and ensures safe shutdown of downstream circuits-such as gate drivers or enable lines-during input-side power loss. SI8650BB-B-IS1R does not require external components to achieve this state.
What is the role of the EN2 pin on the SI8650BB-B-IS1R?
The EN2 pin on the SI8650BB-B-IS1R is an active-high enable input located on the output side (VDD2/GND2 domain) that controls all five outputs simultaneously. When EN2 is high, outputs follow their respective inputs; when EN2 is low, all outputs enter high-impedance state. This enables centralized output disable for system-level power sequencing or fault containment in designs using SI8650BB-B-IS1R.
Can the SI8650BB-B-IS1R operate with different supply voltages on each side?
Yes, the SI8650BB-B-IS1R supports independent 2.5–5.5 V supplies on VDD1 and VDD2, allowing level translation between 3.3 V microcontrollers and 5 V analog circuitry without external level shifters. Both sides feature separate UVLO thresholds (1.95–2.375 V), ensuring robust operation during asymmetric brownout conditions-a key capability confirmed in SI8650BB-B-IS1R's electrical specifications table.
SI8650BB-B-IS1R 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:
- 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:
- 2.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8650BB-B-IS1R FAQ
1.How can I place an order for SI8650BB-B-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8650BB-B-IS1R 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-B-IS1R reliable?
The price and inventory of SI8650BB-B-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8650BB-B-IS1R is usually 5 days.
3.What payment methods are accepted for SI8650BB-B-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8650BB-B-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8650BB-B-IS1R?
SI8650BB-B-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8650BB-B-IS1R 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-B-IS1R?
For technical support, including SI8650BB-B-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8650BB-B-IS1R requirements.
6.How does Aetrix verify that SI8650BB-B-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8650BB-B-IS1R 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-B-IS1R meets industry standards.
7.What is the process for return or replacement of SI8650BB-B-IS1R?
All SI8650BB-B-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8650BB-B-IS1R, 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-B-IS1R part is unused and in its original packaging.
Return procedure for SI8650BB-B-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8650BB-B-IS1R 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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