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Skyworks Solutions Inc. SI8602AD-ASR
- Part No.:
- SI8602AD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8602AD-ASR.pdf
- Description:
- AUTOMOTIVE 5 KV UNI- AND BI-DIRE
- Quantity:
- Payment:
- Shipping:
Inventory:1,082
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Product details
Overview
SI8602AD-ASR from Skyworks Solutions is a bidirectional I²C isolator with one unidirectional auxiliary channel, designed for galvanic isolation of I²C/SMBus buses in high-reliability systems. It delivers 5.0 kVRMS isolation, supports up to 1.7 MHz I²C clock rates, features open-drain SDA/SCL outputs with 35 mA sink capability, and operates across –40°C to +125°C - enabling use in battery management systems and on-board chargers.
For engineers reviewing the SI8602AD-ASR datasheet, SI8602AD-ASR pinout, SI8602AD-ASR application, or SI8602AD-ASR equivalent, this device addresses critical I²C bus isolation challenges including latch prevention, hot-swap robustness, and reinforced insulation compliance (UL, VDE, CQC) in automotive and industrial power electronics.
Technical Context
The SI8602AD-ASR implements RF-based galvanic isolation using a proprietary semiconductor barrier, eliminating optical coupling limitations. Its anti-latch architecture ensures stable bidirectional SDA operation while maintaining independent SCL directionality - with Side A logic levels (VOL = 0.54 V typ, VIL = 0.41 V) engineered to prevent feedback-induced bus lockup.
It integrates dual supply domains (AVDD/BVDD), each with independent undervoltage lockout (UVLO), and supports hot-swap insertion into powered systems via built-in protection circuits. The unidirectional auxiliary channel operates at up to 10 Mbps with CMOS-compatible input thresholds (VT+ = 1.67 V typ, VT– = 1.23 V typ) and 50 Ω nominal output impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | Up to 1.7 MHz - enables full-speed I²C communication without timing bottlenecks in SMBus or PMBus interfaces. |
| Isolation Rating | 5.0 kVRMS - meets reinforced insulation requirements per IEC 60950-1, 61010-1, and VDE 0884-10 for safety-critical applications. |
| SDA/SCL Sink Current | 35 mA - drives standard I²C pull-up networks (e.g., 1–3 mA) while maintaining VOL ≤ 0.8 V under worst-case load. |
| Auxiliary Channel Data Rate | 10 Mbps - supports high-speed non-I²C signals such as RESET or INT with minimal propagation delay (tPLH/tPHL < 45 ns). |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 0, enabling deployment in traction inverters and battery electric vehicle subsystems. |
| Supply Voltage Range | 3.0 V to 5.5 V - interoperable with both 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Transient Immunity | 50 kV/µs - ensures reliable operation in noisy motor control or PoE environments with fast-rising common-mode transients. |
Pinout & Package
SI8602AD-ASR is housed in a RoHS-compliant wide-body SOIC-16 package (10.3 mm × 7.5 mm, 1.27 mm pitch), optimized for creepage/clearance compliance in high-voltage systems. The package supports JEDEC-standard 260 °C peak reflow profiling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Side A I/O (ASDA, ASCL, AINT, ARES) | ASDA/ASCL are bidirectional open-drain I²C ports; AINT/ARES are unidirectional CMOS inputs for auxiliary signals. |
| 5, 6, 7, 8 | Side A Power/Ground (AVDD, AGND, AVDD, AGND) | Dual AVDD/AGND pairs reduce supply noise coupling and improve PSRR for isolated I²C signaling. |
| 9, 10, 11, 12 | Side B I/O (BSDA, BSCL, BINT, BRES) | BSDA/BSCL mirror ASDA/ASCL functionality; BINT/BRES are unidirectional CMOS outputs synchronized to A-side inputs. |
| 13, 14, 15, 16 | Side B Power/Ground (BVDD, BGND, BVDD, BGND) | Dual BVDD/BGND pairs provide independent power domain integrity and support asymmetric supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Anti-latch bidirectional I²C architecture | Prevents bus lockup by enforcing ΔVSDA ≥ 50 mV between Side A VOL (0.54 V) and VIL (0.41 V), eliminating need for external anti-latch circuitry. |
| Hot-swap capable isolation | Internal protection circuits allow safe insertion into live systems without data corruption or latch-up, critical for field-serviceable battery modules. |
| Reinforced insulation certification | UL 1577, VDE 0884-10, and CQC approvals confirm suitability for functional safety applications requiring ≥ 5.0 kVRMS working voltage. |
| Automotive-grade qualification | AEC-Q100 Grade 0 qualification, AIAG-compliant PPAP documentation, and IMDS/CAMDS listings support Tier-1 automotive supply chain requirements. |
| Low-power I²C isolation | Consumes only 2.5 mA (AVDD) / 3.2 mA (BVDD) at 1.7 MHz - reduces thermal load in space-constrained battery management ICs. |
Applications
| Battery Management System (BMS) | On-Board Charger (OBC) |
|---|---|
|
Use Scenario: Isolating cell monitoring ICs from microcontroller domain in high-voltage EV battery packs. IC Role / Device Role / Timing Role: SI8602AD-ASR provides galvanic separation between 400–800 V battery stacks and low-voltage MCU, enabling safe I²C telemetry transfer while blocking ground loops. Use Value: Enables direct connection of TI BQ796xx or Analog Devices LTC68xx monitors to host MCU without optocoupler latency or discrete level-shifter complexity. |
Use Scenario: Communicating between AC/DC controller and DC/DC stage in 11 kW OBC units. IC Role / Device Role / Timing Role: SI8602AD-ASR isolates SMBus commands for digital power delivery (PMBus v1.3) between primary and secondary side controllers. Use Value: Supports 1.7 MHz clock rate required for real-time fault reporting and parameter updates during dynamic charging profiles. |
| Power over Ethernet (PoE) | Traction Inverter Control |
|
Use Scenario: Isolating PSE controller I²C interface from PD-side system management in IEEE 802.3bt Type 4 systems. IC Role / Device Role / Timing Role: SI8602AD-ASR separates earth-ground-referenced PSE logic from floating PD domain while preserving SMBus ACK/NACK timing. Use Value: Meets IEC 62368-1 creepage requirements (≥8 mm) in narrow PCB layouts typical of PoE midspans and injectors. |
Use Scenario: Linking gate driver IC status registers to main inverter MCU in hybrid electric vehicle traction inverters. IC Role / Device Role / Timing Role: SI8602AD-ASR carries fault flags (OC, UVLO, OT) and temperature telemetry from isolated gate drivers via auxiliary channels. Use Value: 10 Mbps auxiliary channel supports simultaneous transmission of multiple fault bits with sub-50 ns propagation delay for fast shutdown response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO1541DR | Single-channel, 1.7 MHz I²C isolator; 3.75 kVRMS rating; SOIC-8 package; no auxiliary channel. | Limited to basic I²C isolation without support for interrupt/reset forwarding; lower isolation margin restricts use in >400 V systems. | Select when board space is constrained and auxiliary signal isolation is unnecessary. |
| ADUM1250ARZ | Dual-channel, 1 Mbps I²C isolator; 2.5 kVRMS; SOIC-8; uses iCoupler magnetic isolation; no AEC-Q100 qualification. | Lower speed and isolation rating; lacks automotive process flow and PPAP documentation; unsuitable for BMS or OBC safety cases. | Choose for cost-sensitive industrial I²C isolation where AEC-Q100 and 5.0 kVRMS are not required. |
Compared with ISO1541DR and ADUM1250ARZ, SI8602AD-ASR uniquely combines 5.0 kVRMS reinforced insulation, AEC-Q100 Grade 0 qualification, and integrated auxiliary channel - making it the only option qualified for functional safety-critical I²C isolation in automotive battery systems.
Availability
SI8602AD-ASR is available at Aetrix Electronics and suitable for battery management systems, on-board chargers, and traction inverter control requiring stable component supply across extended temperature and high-reliability automotive lifecycles.
Supply support for SI8602AD-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 Si860x family was developed specifically to replace optocouplers in I²C/SMBus isolation applications, delivering superior propagation delay, power efficiency, and temperature stability using RF-based semiconductor isolation.
FAQ
What is the maximum I²C bus frequency supported by the SI8602AD-ASR?
The SI8602AD-ASR supports I²C bus frequencies up to 1.7 MHz, as verified in Table 5.3 of the official datasheet. This enables full-speed operation with standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) I²C devices, as well as PMBus v1.3 implementations requiring higher bandwidth for real-time telemetry. The SI8602AD-ASR maintains timing integrity across its full –40°C to +125°C operating range.
Does the SI8602AD-ASR require external components for I²C bus operation?
No, the SI8602AD-ASR requires only external pull-up resistors on SDA and SCL lines - no additional anti-latch circuitry, level shifters, or bypass capacitors beyond the mandatory 0.1 µF AVDD–AGND and BVDD–BGND decoupling caps. Its integrated anti-latch design eliminates the feedback path that causes bus lockup in discrete isolator solutions, simplifying layout and reducing BOM count.
Is the SI8602AD-ASR qualified for automotive applications?
Yes, the SI8602AD-ASR is an automotive-grade device qualified to AEC-Q100 Grade 0 (–40°C to +125°C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation, IMDS, and CAMDS listings. Its "-A" suffix and top marking with first character N–Z confirm automotive qualification per Skyworks' ordering guide.
What isolation certifications does the SI8602AD-ASR hold?
The SI8602AD-ASR is certified to UL 1577 (5.0 kVRMS, 1 min), CSA Component Notice 5A, VDE 0884-10 (reinforced), CQC GB4943.1, and IEC 60950-1/61010-1/60601-1. These approvals validate its suitability for reinforced insulation in medical, industrial, and automotive end equipment where regulatory compliance is mandatory.
How does the SI8602AD-ASR handle power loss on one side of the isolation barrier?
When power is lost on either AVDD or BVDD, the SI8602AD-ASR enters undervoltage lockout (UVLO) independently per side. I²C channels go to high-impedance state on the unpowered side, preventing back-driving or data corruption. Non-I²C auxiliary channels retain defined behavior per Table 4.1: outputs return to prior state within 1 µs upon power restoration, ensuring deterministic recovery in fault-tolerant systems.
SI8602AD-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:
- I2C
- Isolated Power:
- Yes
- Number of Channels:
- 1
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Bidirectional, Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 20ns, 20ns
- Pulse Width Distortion (Max):
- 12ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8602AD-ASR FAQ
1.How can I place an order for SI8602AD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8602AD-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 SI8602AD-ASR reliable?
The price and inventory of SI8602AD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8602AD-ASR is usually 5 days.
3.What payment methods are accepted for SI8602AD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8602AD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8602AD-ASR?
SI8602AD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8602AD-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 SI8602AD-ASR?
For technical support, including SI8602AD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8602AD-ASR requirements.
6.How does Aetrix verify that SI8602AD-ASR is sourced from the original manufacturer or authorized distributors?
All SI8602AD-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 SI8602AD-ASR meets industry standards.
7.What is the process for return or replacement of SI8602AD-ASR?
All SI8602AD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8602AD-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 SI8602AD-ASR part is unused and in its original packaging.
Return procedure for SI8602AD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8602AD-ASR Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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