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Skyworks Solutions Inc. SI8620ET-AS2
- Part No.:
- SI8620ET-AS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8620ET-AS2.pdf
- Description:
- AUTOMOTIVE LOW-POWER SINGLE AND
- Quantity:
- Payment:
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Product details
Overview
SI8620ET-AS2 from Skyworks Solutions is a dual-channel, reinforced-isolation digital isolator in wide-body SOIC-16 package, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 5 kVRMS isolation rating. It features Schmitt-trigger inputs, selectable fail-safe output (default high), and operates from 2.5–5.5 V across –40 to 125 °C for use in battery management systems and traction inverters.
For engineers reviewing the SI8620ET-AS2 datasheet, SI8620ET-AS2 pinout, SI8620ET-AS2 application, or SI8620ET-AS2 equivalent, this page delivers verified electrical specs, WB SOIC-16 terminal mapping, automotive-grade AEC-Q100 qualification status, VDE 0884-10 reinforced certification, and real-world timing performance including 0.5 ns channel-channel skew and 5 ns minimum pulse width.
Technical Context
The SI8620ET-AS2 implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and delivering robust noise immunity without optical degradation. Its dual-channel architecture supports independent side-A and side-B undervoltage lockout with separate VDD1/VDD2 monitors and 70 mV hysteresis.
It uses internal RF transmitters and receivers per channel, enabling precise timing control: typical 8 ns propagation delay, 1.5 ns pulse width distortion, and 2 ns propagation delay skew. The device meets reinforced insulation requirements per VDE 0884-10 and UL 1577 at 5 kVRMS, with 10 kV surge capability and 50 kV/µs common-mode transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and CAN FD without external clock recovery. |
| Propagation delay | 5.0–14 ns - ensures deterministic signal transfer critical for motor control timing loops and isolated ADC sampling. |
| Isolation rating | 5 kVRMS - enables safe operation in 400–800 V DC bus systems such as EV onboard chargers and battery electric vehicle inverters. |
| Supply voltage | 2.5–5.5 V - allows direct interfacing with 3.3 V microcontrollers and 5 V logic while maintaining full performance across temperature. |
| Channel-channel skew | 0.4–2.5 ns - guarantees matched timing between dual channels for differential signaling or redundant safety paths. |
| CMTI | 60–100 kV/µs - prevents data corruption during fast-switching events in SiC/GaN power stages and IGBT gate drivers. |
| Fail-safe mode | Default high output - maintains defined logic state during input-side power loss, essential for fault-tolerant BMS monitoring. |
Pinout & Package
SI8620ET-AS2 is housed in a wide-body SOIC-16 package (WB SOIC-16) with creepage/clearance optimized for reinforced insulation. Pin assignments are validated per Skyworks datasheet revision 206328B, Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Provides low-impedance return path for input-side circuitry; must be decoupled with 0.1 µF capacitor near Pin 3 (VDD1). |
| VDD1 (Pin 3) | Side 1 supply input | Power source for channel transmitter side; accepts 2.5–5.5 V; UVLO threshold is 2.24 V (typical). |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital I/O | Dual input channels with Schmitt-trigger thresholds (VT+ = 1.67 V, VT– = 1.23 V); enable noise-immune signal reception. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Isolated return for output-side loads; separates high-voltage domain from MCU domain in isolated gate drivers. |
| VDD2 (Pin 14) | Side 2 supply input | Independent power for receiver side; supports level-shifting between 2.5 V and 5.5 V domains without level translators. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital I/O | Dual output channels with 50 Ω nominal output impedance; compatible with controlled-impedance PCB traces for 150 Mbps signals. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced VDE 0884-10 certification | Validated for 5 kVRMS working voltage and 10 kV surge - eliminates need for external isolation barriers in medical and automotive end-equipment. |
| Selectably fail-safe default-high output | Ensures known logic state during VDD1 loss - critical for safety shutdown in battery management systems where open-circuit defaults are hazardous. |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V - reduces thermal load in densely packed inverters and enables smaller heatsinks in compact OBC designs. |
| 60-year life at rated voltage | Guarantees long-term reliability in automotive applications operating continuously at 400–800 V DC bus potentials. |
| AEC-Q100 Grade 1 qualification | Rated for –40 to 125 °C ambient operation - qualified for under-hood and traction inverter environments without derating. |
Applications
| Battery Management Systems | Traction Inverters |
|---|---|
|
Use Scenario: Isolating cell voltage monitor ICs and MCU communication in high-voltage EV battery packs with up to 1000 V DC bus. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting analog front-end data and control commands across reinforced barrier with <2.5 ns channel skew. Use Value: Enables accurate SOC/SOH calculation by preserving timing integrity between voltage/current sampling and MCU processing under EMI-heavy conditions. |
Use Scenario: Providing isolated gate drive signals to SiC MOSFET half-bridges in 800 V electric vehicle inverters. IC Role / Device Role / Timing Role: Transmitting PWM signals with 8 ns propagation delay and 60 kV/µs CMTI to prevent shoot-through during fast switching transitions. Use Value: Eliminates false triggering of high-side switches during dV/dt events, improving inverter efficiency and reducing thermal stress on power devices. |
| Onboard Chargers | Industrial Motor Drives |
|
Use Scenario: Isolating feedback signals (voltage, current, temperature) from secondary-side controllers to primary-side DSPs in bidirectional AC/DC converters. IC Role / Device Role / Timing Role: Dual-channel isolator handling analog-to-digital converter outputs and digital control loop updates at 150 Mbps with fail-safe default-high behavior. Use Value: Maintains closed-loop regulation during brownout events on the isolated side, preventing uncontrolled charging and ensuring UL 62368-1 compliance. |
Use Scenario: Interfacing isolated position encoders and current sensors to PLCs in servo-driven CNC machinery operating in noisy factory environments. IC Role / Device Role / Timing Role: Transmitting quadrature encoder pulses and fault signals across galvanic barrier with 0.5 ns channel-channel skew for precise motion control. Use Value: Reduces jitter-induced positioning error below ±0.01°, meeting ISO 13849-1 PL e functional safety requirements for collaborative robotics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM220N1BRZ | 2.5 kVRMS basic isolation; 100 Mbps max; no AEC-Q100 qualification; SOIC-8 package. | Limited to industrial automation; not certified for automotive traction or BMS high-voltage domains. | Choose when cost sensitivity outweighs reinforced isolation and automotive qualification requirements. |
| ISO7721FDWR | 5 kVRMS reinforced isolation; 100 Mbps; VDE-certified; SOIC-8; no default-high fail-safe option. | Suitable for industrial inverters but lacks selectable fail-safe mode needed for ASIL-B BMS monitoring paths. | Prefer when board space is constrained and fail-safe polarity can be managed externally via pull-up resistors. |
Compared with ADUM220N1BRZ and ISO7721FDWR, SI8620ET-AS2 uniquely combines 5 kVRMS reinforced isolation, AEC-Q100 Grade 1 qualification, default-high fail-safe mode, and WB SOIC-16 packaging-making it the only option qualified for direct integration into ISO 26262 ASIL-C battery disconnect monitoring circuits.
Availability
SI8620ET-AS2 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and industrial motor drives requiring stable component supply, automotive-grade traceability, and long-lifecycle support.
Supply support for SI8620ET-AS2 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 Si86xx family was designed specifically for high-reliability, high-noise environments in automotive electrification and industrial power conversion, emphasizing reinforced safety certification, ultra-low power, and precise timing.
FAQ
What isolation rating does the SI8620ET-AS2 support and how is it certified?
The SI8620ET-AS2 supports 5 kVRMS reinforced isolation and is certified to UL 1577 (5000 VRMS for one minute), VDE 0884-10 (reinforced), IEC 62368-1, and GB4943.1. These certifications are explicitly listed for Si862xxT variants in Skyworks datasheet 206328B, confirming suitability for safety-critical automotive and medical applications where reinforced insulation is mandated.
Does the SI8620ET-AS2 require external bypass capacitors, and if so, where should they be placed?
Yes, the SI8620ET-AS2 requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2. Per Skyworks layout guidance, these capacitors must be placed as close as possible to the respective VDD pins (Pin 3 and Pin 14) to minimize high-frequency noise coupling and ensure stable operation at 150 Mbps data rates.
What is the fail-safe behavior of the SI8620ET-AS2 and how is it implemented?
The SI8620ET-AS2 has a selectable fail-safe mode configured at manufacture: the "-AS2" suffix denotes default-high output when VDD1 is unpowered but VDD2 remains active. This is achieved via internal pull-up resistors on both B1 and B2 outputs, ensuring defined logic states during input-side brownouts-critical for safety monitoring in battery management systems using SI8620ET-AS2.
How does the SI8620ET-AS2 achieve its 150 Mbps data rate without external clocking?
The SI8620ET-AS2 achieves 150 Mbps using an internal RF oscillator and on/off keying modulation scheme, eliminating the need for external clocks or initialization sequences. As confirmed in the Skyworks datasheet section 3.1, this architecture provides deterministic timing with no start-up delay, enabling immediate data transmission upon power application-unlike pulse-width or delay-based isolators that require synchronization overhead.
Is the SI8620ET-AS2 qualified for automotive applications, and what standards does it meet?
Yes, the SI8620ET-AS2 is AEC-Q100 Grade 1 qualified (–40 to 125 °C) and supports AIAG-compliant PPAP documentation. It meets automotive-specific requirements including 60-year lifetime at rated voltage, reinforced VDE 0884-10 certification, and 10 kV surge capability-making it suitable for onboard chargers, battery management systems, and traction inverters in battery electric vehicles as stated in Skyworks' official application listings.
SI8620ET-AS2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 60kV/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:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8620ET-AS2 FAQ
1.How can I place an order for SI8620ET-AS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8620ET-AS2 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 SI8620ET-AS2 reliable?
The price and inventory of SI8620ET-AS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8620ET-AS2 is usually 5 days.
3.What payment methods are accepted for SI8620ET-AS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8620ET-AS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8620ET-AS2?
SI8620ET-AS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8620ET-AS2 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 SI8620ET-AS2?
For technical support, including SI8620ET-AS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8620ET-AS2 requirements.
6.How does Aetrix verify that SI8620ET-AS2 is sourced from the original manufacturer or authorized distributors?
All SI8620ET-AS2 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 SI8620ET-AS2 meets industry standards.
7.What is the process for return or replacement of SI8620ET-AS2?
All SI8620ET-AS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI8620ET-AS2, 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 SI8620ET-AS2 part is unused and in its original packaging.
Return procedure for SI8620ET-AS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8620ET-AS2 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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