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Skyworks Solutions Inc. SI8620DB-AS
- Part No.:
- SI8620DB-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8620DB-AS.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,075
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Product details
Overview
SI8620DB-AS 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, 5 kVRMS isolation rating, and fail-safe default-low output mode. It operates across –40°C to +125°C and delivers ultra-low power consumption (1.6 mA/channel at 1 Mbps, 5 V) for isolated communication in high-noise industrial motor drives and battery management systems.
For engineers reviewing the SI8620DB-AS datasheet, SI8620DB-AS pinout, SI8620DB-AS application, or SI8620DB-AS equivalent, key selection criteria include its dual-channel directionality (A1→B1, A2→B2), VDE-reinforced 5 kVRMS rating, Schmitt-trigger input noise immunity, and compatibility with 2.5–5.5 V dual-supply operation on isolated sides.
Technical Context
The SI8620DB-AS implements RF-based on/off keying across a semiconductor isolation barrier-eliminating start-up initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent undervoltage lockout (UVLO) per side with 2.24 V typical rising threshold and 70 mV hysteresis.
It features two unidirectional isolated channels (A1→B1, A2→B2), selectable fail-safe output state (default-low per "DB" suffix), and precise timing: 0.5 ns typical channel-channel skew, 2 ns propagation delay skew, and 5 ns minimum pulse width-enabling reliable high-speed serial link isolation in real-time control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, RS-485, and digital encoder interfaces without timing bottlenecks. |
| Propagation delay | 5.0–14 ns - ensures sub-15 ns latency for closed-loop feedback in motor control and power converter gate drivers. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, enabling direct interface with 600 VAC mains and EV battery stacks. |
| Supply voltage | 2.5–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends across isolated domains. |
| Power consumption | 1.6 mA/channel @ 1 Mbps, 5 V - reduces thermal load and enables compact, fanless designs in space-constrained inverters. |
| Common-mode transient immunity | 50 kV/µs - maintains signal integrity during fast-switching IGBT events in industrial drives and traction inverters. |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive BMS and industrial PLC environments without derating. |
Pinout & Package
SI8620DB-AS uses a 16-pin wide-body SOIC package (WB SOIC-16) with 8.3 mm creepage/clearance, optimized for reinforced insulation in high-voltage applications. Pin 1 = GND1, Pin 3 = VDD1, Pin 4 = A1 (input), Pin 5 = A2 (input), Pin 7 = GND1, Pin 9 = GND2, Pin 12 = B2 (output), Pin 13 = B1 (output), Pin 14 = VDD2, Pin 16 = GND2; Pins 2, 6, 8, 10, 11, 15 are NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Provides low-impedance return path for input-side logic; must be decoupled with 0.1 µF capacitor near Pin 3. |
| VDD1 (Pin 3) | Side 1 supply input | Accepts 2.5–5.5 V for input-side circuitry; powers A1/A2 inputs and internal RF transmitter. |
| A1 (Pin 4), A2 (Pin 5) | Digital inputs (Side 1) | Schmitt-trigger inputs with 0.44 V hysteresis; tolerate slow edges and reject >1.23 V noise spikes. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Isolated return for output-side logic; separates noisy power stage grounds from MCU domain. |
| VDD2 (Pin 14) | Side 2 supply input | Independent 2.5–5.5 V rail for output drivers; enables level-shifting between 3.3 V MCU and 5 V gate driver. |
| B1 (Pin 13), B2 (Pin 12) | Digital outputs (Side 2) | Fail-safe default-low outputs; drive 50 Ω loads directly; support 4 mA sink/source at 0.4 V VOL. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift of optocouplers; enables stable 60-year lifetime at rated working voltage. |
| Selectable fail-safe mode (DB = default-low) | Ensures B1/B2 outputs remain logic low during VDD1 loss-critical for safe shutdown in motor control and OBC systems. |
| Ultra-low power at 100 Mbps | 5.5 mA/channel @ 100 Mbps, 5 V - cuts isolation power by >40% vs. legacy capacitive isolators in high-data-rate BMS telemetry. |
| Precise channel matching | 0.5 ns typical channel-channel skew - preserves timing alignment in dual-signal feedback paths (e.g., current + voltage sensing). |
| VDE-reinforced certification | Complies with VDE 0884-10 for reinforced insulation - satisfies IEC 62368-1 and IEC 60601-1 system-level safety requirements. |
Applications
| Motor Control Systems | Isolated ADC/DAC Interfaces |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and three-phase inverter gate drivers in servo drives. IC Role / Device Role / Timing Role: Dual unidirectional isolator transmitting A1→B1 (PWM enable) and A2→B2 (fault flag) with <10 ns delay and 0.5 ns skew. Use Value: Enables tight timing synchronization between control and power stages while blocking 1000 V common-mode transients. |
Use Scenario: Isolating serial data lines between precision SAR ADC and host processor in medical patient monitors. IC Role / Device Role / Timing Role: Transmitting SPI clock and data across isolation barrier with 150 Mbps capability and 350 ps eye jitter. Use Value: Preserves 16-bit resolution integrity by eliminating ground loop noise and meeting IEC 60601-1 creepage requirements. |
| Battery Management Systems | Onboard Chargers |
Use Scenario: Isolating cell voltage monitoring and balancing commands in 800 V EV battery packs. IC Role / Device Role / Timing Role: Providing reinforced 5 kVRMS isolation for UART/ISO-7816 links between slave controllers and master MCU. Use Value: Meets ASIL-B functional safety via VDE-certified reinforced insulation and AEC-Q100 Grade 1 qualification. |
Use Scenario: Isolating digital control signals between AC/DC PFC controller and DC/DC LLC controller in 11 kW OBCs. IC Role / Device Role / Timing Role: Transmitting enable, fault, and sync pulses across 5 kVRMS barrier with <15 ns total propagation uncertainty. Use Value: Supports bidirectional power flow control while maintaining CISPR-25 Class 5 EMI compliance through low CMTI-induced glitches. |
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 |
|---|---|---|---|
| ADUM220N0BRIZ | 2.5 kVRMS basic isolation; 100 Mbps max; 13 ns propagation delay; no VDE-reinforced certification. | Not suitable for reinforced insulation requirements in EV battery stacks or medical devices. | Prefer SI8620DB-AS where 5 kVRMS VDE-reinforced isolation and AEC-Q100 qualification are mandatory. |
| ISO7721DWR | 5 kVRMS reinforced; 100 Mbps; 11 ns propagation delay; 3.0–5.5 V supply only; no 2.5 V operation. | Lacks 2.5 V compatibility and failsafe default-low option; requires external pull-downs for safe state. | Choose SI8620DB-AS when 2.5 V side operation, guaranteed default-low behavior, and lower power at 100 Mbps are required. |
Compared with ADUM220N0BRIZ and ISO7721DWR, SI8620DB-AS uniquely combines 5 kVRMS VDE-reinforced certification, 150 Mbps bandwidth, 2.5 V operation, and factory-configured default-low fail-safe mode-making it optimal for next-generation EV and industrial safety-critical systems.
Availability
SI8620DB-AS is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated power supply design requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for SI8620DB-AS 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 high-performance wireless and power systems.
The Si86xx family was designed specifically for high-reliability, high-speed digital isolation in automotive, industrial, and medical applications-emphasizing low power, precise timing, and safety certification compliance.
FAQ
What does the "DB" suffix in SI8620DB-AS indicate?
The "DB" suffix in SI8620DB-AS specifies a dual-channel isolator with default-low fail-safe output behavior: when VDD1 is unpowered but VDD2 remains active, both B1 and B2 outputs are held low. This is factory-configured and documented in Table 3 of the Skyworks datasheet for safe shutdown in motor control and BMS applications.
Does SI8620DB-AS support bidirectional data transmission?
No, SI8620DB-AS supports two unidirectional channels only: A1 → B1 and A2 → B2. It does not support reverse-direction signaling. For bidirectional isolation, Skyworks offers the SI8621 or SI8622 variants-but SI8620DB-AS is strictly input-to-output directional per channel.
What safety certifications apply to SI8620DB-AS?
SI8620DB-AS is certified to UL 1577 (5000 VRMS, 1 min), CSA IEC 62368-1 and IEC 60601-1 (reinforced), VDE 0884-10 (reinforced), and CQC GB4943.1. Its wide-body SOIC-16 package meets reinforced insulation requirements for 5 kVRMS working voltage per VDE standards.
Can SI8620DB-AS operate with different supply voltages on each side?
Yes, SI8620DB-AS supports independent 2.5–5.5 V supplies on VDD1 and VDD2. This enables level translation-for example, interfacing a 3.3 V MCU (VDD1) with a 5 V gate driver (VDD2)-without external level shifters, while maintaining full isolation integrity.
How does the RF isolation architecture of SI8620DB-AS improve reliability over optocouplers?
SI8620DB-AS uses RF modulation instead of LEDs, eliminating wear-out mechanisms like LED degradation and CTR drift. It achieves 60-year lifetime at rated voltage, stable propagation delay across –40°C to +125°C, and no start-up initialization-unlike optocouplers that require warm-up and suffer from temperature-dependent timing shifts.
SI8620DB-AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- SI8620
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- -
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- -
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI8620DB-AS FAQ
1.How can I place an order for SI8620DB-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8620DB-AS 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 SI8620DB-AS reliable?
The price and inventory of SI8620DB-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8620DB-AS is usually 5 days.
3.What payment methods are accepted for SI8620DB-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8620DB-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8620DB-AS?
SI8620DB-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8620DB-AS 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 SI8620DB-AS?
For technical support, including SI8620DB-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8620DB-AS requirements.
6.How does Aetrix verify that SI8620DB-AS is sourced from the original manufacturer or authorized distributors?
All SI8620DB-AS 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 SI8620DB-AS meets industry standards.
7.What is the process for return or replacement of SI8620DB-AS?
All SI8620DB-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8620DB-AS, 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 SI8620DB-AS part is unused and in its original packaging.
Return procedure for SI8620DB-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8620DB-AS 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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