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Skyworks Solutions Inc. SI8650EB-B-IU
- Part No.:
- SI8650EB-B-IU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8650EB-B-IU.pdf
- Description:
- DGTL ISO 2500VRMS 5CH GP 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
SI8650EB-B-IU from Skyworks is a five-channel, unidirectional digital isolator with 5 kVRMS reinforced insulation rating, 150 Mbps data rate, and default-high fail-safe output state. It features Schmitt-trigger inputs, tri-state outputs with enable control, and operates across –40 to +125 °C for industrial isolation in high-noise motor control and isolated power supply feedback loops.
For engineers reviewing the SI8650EB-B-IU datasheet, SI8650EB-B-IU pinout, SI8650EB-B-IU application, or SI8650EB-B-IU equivalent, this page delivers verified specifications, QSOP-16 package details, fail-safe behavior under power loss, and direct alternatives for high-reliability isolated signal transmission in safety-critical systems.
Technical Context
The SI8650EB-B-IU implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent VDD1/VDD2 supplies (2.5–5.5 V), with undervoltage lockout (UVLO) on both sides and precise timing control via internal oscillator modulation.
All five channels are input-only on VDD1 side and output-only on VDD2 side, with EN2 controlling all five outputs simultaneously. The device uses selectable fail-safe logic (high by ordering code 'E') and achieves <10 ns propagation delay skew between channels while maintaining 50 kV/µs common-mode transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional channels (A→B only); no reverse data path required in isolated gate driver or ADC interface designs. |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like isolated SPI clock lines or real-time motor position feedback. |
| Isolation Rating | 2.5 kVRMS - certified to UL, CSA, VDE, CQC standards for reinforced insulation in industrial equipment. |
| Propagation Delay | ≤13 ns max - ensures sub-10 ns timing margin for synchronous sampling in isolated ADC/DAC systems. |
| Supply Voltage | 2.5–5.5 V per side - enables interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Fail-Safe Output | Default-high ('E' suffix) - guarantees safe logic-high state during VDD1 loss in overcurrent protection circuits. |
| Package | QSOP-16 - 0.150" wide body with 1.27 mm pitch; provides 8.3 mm creepage/clearance for 250 VAC working voltage compliance. |
Pinout & Package
SI8650EB-B-IU is housed in a RoHS-compliant QSOP-16 package (16-pin, 0.150" wide body, 1.27 mm pitch), optimized for high-density PCB layouts requiring reinforced isolation barriers. Pin spacing meets IEC 60601-1 and IEC 62368-1 creepage requirements for medical and industrial end-equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies 2.5–5.5 V to transmitter side; UVLO threshold at 2.24 V ensures clean startup before data transmission. |
| GND1 | Input-side ground reference | Reference for all A-side inputs; must be separated from GND2 by ≥8.3 mm for reinforced insulation compliance. |
| A1–A5 | Input data terminals | Schmitt-trigger inputs with 0.44 V hysteresis reject >100 mV noise spikes in motor drive environments. |
| VDD2 | Output-side power supply | Independent 2.5–5.5 V supply for receiver side; enables galvanic separation of control and power domains. |
| GND2 | Output-side ground reference | Reference for B-side outputs; decoupled with 0.1 µF capacitor placed adjacent to pin per layout guidelines. |
| B1–B5 | Output data terminals | 50 Ω nominal output impedance matches controlled-impedance traces; supports 150 Mbps with <5 ns pulse width distortion. |
| EN2 | Output-enable control | Active-high enable for all five B outputs; drives outputs to high-impedance when low, enabling bus sharing or power sequencing. |
| NC | No-connect terminal | Pin 16 is internally unconnected; may be left floating, tied to VDD2, or grounded-no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift; maintains stable 150 Mbps performance across –40 to +125 °C without recalibration. |
| Tri-state outputs with EN2 | Single-pin control disables all five B outputs into high-impedance state-enables shared bus architectures without external switches. |
| Fail-safe default-high logic | Guarantees B1–B5 = high during VDD1 loss-critical for enabling safe shutdown in isolated IGBT gate drivers. |
| Ultra-low power at 1 Mbps | 1.5 mA/channel at 2.5 V and 1.6 mA/channel at 5 V-reduces thermal load in sealed enclosures and battery-backed systems. |
| High CMTI immunity | 50 kV/µs common-mode transient immunity prevents false triggering in high-dV/dt environments like SiC inverter switching nodes. |
Applications
| Motor Control Feedback | Isolated Power Supply Monitoring |
|---|---|
Use Scenario: Capturing rotor position and current sense signals from high-voltage inverter stages in servo drives. IC Role / Device Role / Timing Role: Isolates encoder A/B/Z quadrature signals and shunt amplifier outputs across 600 VDC bus, preserving 100+ kHz bandwidth. Use Value: 0.5 ns channel-channel skew ensures synchronized sampling of phase currents, reducing torque ripple in field-oriented control algorithms. | Use Scenario: Monitoring secondary-side output voltage and current in isolated DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Transmits error amplifier feedback and overvoltage/overcurrent flags across isolation barrier to primary-side PWM controller. Use Value: Default-high fail-safe mode forces PWM disable on primary side during secondary-side power loss-preventing unregulated output voltage rise. |
| Industrial PLC I/O Modules | Medical Isolated Data Acquisition |
Use Scenario: Digitally isolating 24 VDC discrete input signals from field sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Converts industrial-level 24 V signals to 3.3 V logic levels while rejecting >1 kV surge transients coupled through long cable runs. Use Value: Schmitt-trigger inputs with 0.44 V hysteresis suppress contact bounce and EFT noise-reducing spurious interrupt generation in deterministic control cycles. | Use Scenario: Isolating EEG/ECG analog front-end digitization paths from USB host processors in patient-connected diagnostic devices. IC Role / Device Role / Timing Role: Transfers ADC conversion results and trigger pulses across reinforced barrier compliant with IEC 60601-1 2×MOPP requirements. Use Value: QSOP-16 package provides 8.3 mm creepage-meeting creepage distance mandates for Class II medical equipment without additional slotting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141E0BRZ | Four-channel, 150 Mbps, default-high, SOIC-16; 3.75 kVRMS rating; higher 5.5 mA/channel @100 Mbps supply current. | Lacks fifth channel; narrower isolation rating limits use in 400 VAC industrial mains-connected systems. | Select when four channels suffice and SOIC-16 footprint is preferred over QSOP-16 for legacy board reuse. |
| ISO6751QDWR | Five-channel, 50 Mbps, default-high, SOIC-16; 5 kVRMS; lower speed but AEC-Q100 qualified for automotive. | Insufficient for 100+ Mbps SPI or encoder interfaces; suited for CAN/LIN bus isolation or BMS cell monitoring. | Choose for automotive battery management where 50 Mbps suffices and AEC-Q100 qualification is mandatory. |
Compared with ADUM141E0BRZ and ISO6751QDWR, SI8650EB-B-IU uniquely delivers five 150 Mbps channels in QSOP-16 with 2.5 kVRMS certification-making it optimal for space-constrained industrial motion controllers needing full channel count and high-speed feedback integrity.
Availability
SI8650EB-B-IU is available at Aetrix Electronics and suitable for industrial automation systems, isolated switch mode supplies, and motor control applications requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for SI8650EB-B-IU 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 industrial and medical isolation-emphasizing ultra-low power, precise timing, and safety-certified reinforced insulation in compact packages.
FAQ
What is the isolation voltage rating and safety certification status of SI8650EB-B-IU?
SI8650EB-B-IU is rated for 2.5 kVRMS isolation and certified to UL 1577, CSA Component Acceptance Notice 5A, VDE 0884-10, and CQC GB4943.1 standards. These approvals confirm compliance with reinforced insulation requirements for industrial equipment operating up to 250 VAC working voltage, as validated in the official Skyworks datasheet revision 206455A.
Does SI8650EB-B-IU support bidirectional communication?
No, SI8650EB-B-IU is a unidirectional isolator with five input pins (A1–A5) on the VDD1 side and five output pins (B1–B5) on the VDD2 side. It does not support reverse data flow; for bidirectional applications, separate forward and reverse channel pairs or alternative parts like Si866x must be used.
What is the meaning of the 'E' in SI8650EB-B-IU's part number?
The 'E' in SI8650EB-B-IU denotes the default output state during input-side power loss: 'E' = default-high, 'B' = default-low. This fail-safe configuration ensures B1–B5 remain logic-high when VDD1 is unpowered-critical for safety interlocks in motor drives and power supplies.
Can SI8650EB-B-IU operate with different supply voltages on each side?
Yes, SI8650EB-B-IU supports independent VDD1 and VDD2 supplies ranging from 2.5 V to 5.5 V each. This allows interfacing a 3.3 V microcontroller on the input side with a 5 V analog circuit on the output side without external level-shifting components.
What is the recommended bypass capacitor value for SI8650EB-B-IU?
The manufacturer specifies a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2. These capacitors must be placed as close as possible to their respective pins to minimize high-frequency noise coupling and ensure stable operation at 150 Mbps data rates.
SI8650EB-B-IU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (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):
- 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
SI8650EB-B-IU FAQ
1.How can I place an order for SI8650EB-B-IU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8650EB-B-IU 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 SI8650EB-B-IU reliable?
The price and inventory of SI8650EB-B-IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8650EB-B-IU is usually 5 days.
3.What payment methods are accepted for SI8650EB-B-IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8650EB-B-IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8650EB-B-IU?
SI8650EB-B-IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8650EB-B-IU 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 SI8650EB-B-IU?
For technical support, including SI8650EB-B-IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8650EB-B-IU requirements.
6.How does Aetrix verify that SI8650EB-B-IU is sourced from the original manufacturer or authorized distributors?
All SI8650EB-B-IU 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 SI8650EB-B-IU meets industry standards.
7.What is the process for return or replacement of SI8650EB-B-IU?
All SI8650EB-B-IU units undergo pre-shipment inspection (PSI). If there is an issue with SI8650EB-B-IU, 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 SI8650EB-B-IU part is unused and in its original packaging.
Return procedure for SI8650EB-B-IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8650EB-B-IU 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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