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Skyworks Solutions Inc. SI8660AB-AS1R
- Part No.:
- SI8660AB-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8660AB-AS1R.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,547
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Product details
Overview
SI8660AB-AS1R from Skyworks is an automotive-grade, 6-channel unidirectional digital isolator with 2.5 kVRMS isolation, DC–1 Mbps data rate, Schmitt-trigger inputs, and tri-state outputs controlled by enable pins. It operates from 2.5 V to 5.5 V on both sides and supports –40 °C to 125 °C ambient, targeting high-reliability battery management systems and traction inverters.
For engineers reviewing the SI8660AB-AS1R datasheet, SI8660AB-AS1R pinout, SI8660AB-AS1R application, or SI8660AB-AS1R equivalent, key selection criteria include its AEC-Q100 qualification, narrow-body SOIC-16 package, 6-input/0-output channel configuration, 50 kV/µs CMTI, and automotive PPAP support-critical for EV powertrain isolation design.
Technical Context
The SI8660AB-AS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-supply architecture (VDD1/VDD2) supports independent 2.5–5.5 V operation per side, with undervoltage lockout (UVLO) thresholds at 1.95 V (rising) and 1.88 V (falling) on both rails.
All six channels are input-only on Side A (VDD1), with no outputs on Side B (VDD2); enable control is absent per Table 3.2, confirming fixed-enable operation. The device uses Schmitt-trigger inputs (VT+ = 1.67 V typ, VT– = 1.23 V typ) and delivers 35 ns max propagation delay with ≤25 ns pulse-width distortion at 1 Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 1 Mbps - supports low-speed control signaling in battery monitoring and safety interlocks without overspec'ing cost or power. |
| Isolation Rating | 2.5 kVRMS - meets reinforced insulation requirements for functional isolation in 400 V–800 V EV battery domains. |
| Supply Voltage | 2.5 V to 5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V analog sensing circuits without level shifters. |
| Operating Temp | –40 °C to 125 °C - qualified for under-hood and power module locations per AEC-Q100 Grade 0. |
| CMTI | 50 kV/µs min - suppresses false triggering during fast-switching transients in SiC/GaN inverter gate drives. |
| Propagation Delay | 35 ns max - ensures deterministic timing for fault-response loops in ISO 26262 ASIL-C/D subsystems. |
| Supply Current | 5.0 mA typ @ 5 V / 1 Mbps - enables ultra-low-power wake-up monitoring in always-on BMS standby modes. |
Pinout & Package
SI8660AB-AS1R is housed in a RoHS-compliant 16-pin narrow-body SOIC package (5.3 mm width, 10.3 mm length), optimized for high-density automotive PCB layouts and compatible with JEDEC J-STD-020 reflow profiles (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies all six input buffers and internal RF transmitter; must be bypassed with 0.1 µF capacitor near pin. |
| GND1 | Input-side ground reference | Return path for VDD1; requires separate low-impedance plane from GND2 to maintain isolation integrity. |
| INA1–INA6 | Digital input channels | 6 unidirectional CMOS inputs with Schmitt-trigger hysteresis (0.44 V typ); accept 2.0 V min VIH and 0.8 V max VIL. |
| VDD2 | Output-side power supply | No active outputs on Side B; VDD2 powers only internal receiver circuitry and bias networks. |
| GND2 | Output-side ground reference | Isolated return for VDD2; physically separated from GND1 by ≥8.0 mm creepage per IEC 60747-5-2. |
| NC | No-connect terminal | Pins 13–16 are internally unconnected; may be left floating, tied to GND2, or used as keep-out zones for HV clearance. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift of optocouplers; guarantees 60-year life at rated working voltage. |
| AEC-Q100 Grade 0 qualification | Validated for 125 °C operation with zero-defect manufacturing flow, AIAG-compliant PPAP, and IMDS/CAMDS reporting. |
| Schmitt-trigger inputs | 0.44 V typical hysteresis rejects >100 mV of common-mode noise on long harness traces in vehicle ECU environments. |
| Ultra-low power at 1 Mbps | 5.0 mA typical supply current @ 5 V enables continuous BMS cell-voltage polling without thermal derating. |
| Reinforced 2.5 kVRMS rating | Meets UL 1577, VDE 0884-2, and CQC GB4943.1 for single-package functional isolation in 800 V battery systems. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitor ICs (e.g., LTC6813) from MCU host in 96S lithium-ion packs. IC Role / Device Role / Timing Role: Unidirectional signal transmission of ADC conversion ready flags and fault alerts across 400–800 V potential difference. Use Value: 50 kV/µs CMTI prevents misreads during IGBT switching; AEC-Q100 qualification ensures lifetime reliability at 125 °C under hood. |
Use Scenario: Transmitting enable/disable commands from inverter MCU to isolated gate driver stages in SiC power modules. IC Role / Device Role / Timing Role: Level-shifting and noise-immune delivery of PWM dead-time control signals across reinforced insulation barrier. Use Value: 35 ns max propagation delay enables sub-100 ns timing margins for ASIL-D fault shutdown paths. |
| On-Board Charger (OBC) | Charging Station Interface |
|
Use Scenario: Isolating AC line sensing (voltage/current zero-cross detection) from DC-link controller in bidirectional OBCs. IC Role / Device Role / Timing Role: Reliable transfer of grid synchronization pulses while rejecting 50/60 Hz harmonics and switching noise. Use Value: Schmitt-trigger inputs reject >100 mV of conducted EMI; 2.5 kVRMS rating satisfies IEC 61851-1 creepage requirements. |
Use Scenario: Interfacing ISO 15118 communication PHY with main controller in liquid-cooled DC fast chargers. IC Role / Device Role / Timing Role: Galvanic separation of 12 V control logic from 1000 V DC output stage during handshake and safety checks. Use Value: Narrow-body SOIC-16 footprint saves space in compact charging module designs; RoHS/REACH compliance meets EU market access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8660BB-AS1R | Industrial-grade variant (–I suffix); identical electrical specs and pinout but lacks AEC-Q100 qualification and PPAP documentation. | Approved for industrial motor drives and solar inverters, not automotive safety-critical systems. | Select SI8660BB-AS1R only when automotive certification is unnecessary and cost sensitivity outweighs qualification rigor. |
| ADUM160N0BRZ-RL7 | Analog Devices part with same 6-channel, unidirectional, 1 Mbps, SOIC-16 NB configuration; 3.75 kVRMS isolation; higher 7.5 mA supply current @ 5 V. | Used in industrial PLCs and medical imaging; lacks AEC-Q100 and automotive PPAP support. | Choose ADUM160N0BRZ-RL7 if higher isolation rating is required and automotive traceability is not mandated. |
Compared with SI8660BB-AS1R, the SI8660AB-AS1R adds mandatory automotive process controls and documentation; versus ADUM160N0BRZ-RL7, it offers lower power and certified automotive readiness but at lower isolation voltage.
Availability
SI8660AB-AS1R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and charging station interfaces requiring stable component supply across automotive production lifecycles.
Supply support for SI8660AB-AS1R 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 for high-performance wireless and power systems.
The Si86xx family was designed specifically for automotive and industrial isolation needs, delivering ultra-low-power, high-CMTI digital isolation with AEC-Q100 qualification and reinforced safety certification-targeting EV powertrain and energy infrastructure applications.
FAQ
What is the channel configuration of SI8660AB-AS1R?
The SI8660AB-AS1R is a 6-channel unidirectional digital isolator with all inputs on Side A (VDD1) and no outputs on Side B (VDD2). It provides six isolated signal paths from a controller domain to a high-voltage domain, with no reverse-direction capability. This configuration is explicitly defined in Table 1.1 of the datasheet and confirmed by the absence of EN1/EN2 functionality per Table 3.2.
Does SI8660AB-AS1R support enable control for output tri-state?
No, SI8660AB-AS1R does not implement enable control. Per Table 3.2 in the datasheet, the "Si866x" row states "- / -" for EN1/EN2, indicating no enable pins are assigned or functional. All six channels operate continuously when powered; tri-state output capability is not present in this variant.
What safety certifications apply to SI8660AB-AS1R?
SI8660AB-AS1R carries UL 1577 (up to 5000 VRMS for 1 minute), VDE 0884-2 (IEC 60747-5-2), CSA Component Notice 5A, CQC GB4943.1, and IEC 60950-1/61010-1 approvals. Its 2.5 kVRMS working voltage rating is validated under these standards, supporting reinforced insulation in automotive and industrial end equipment.
How does SI8660AB-AS1R differ from industrial-grade Si8660BB-AS1R?
SI8660AB-AS1R and SI8660BB-AS1R share identical electrical specifications, pinout, and package. The distinction lies in manufacturing: SI8660AB-AS1R uses full automotive process flows with zero-defect methodology, AEC-Q100 Grade 0 qualification, AIAG-compliant PPAP, and IMDS/CAMDS reporting-requirements absent in the industrial SI8660BB-AS1R.
What is the maximum propagation delay for SI8660AB-AS1R at 1 Mbps?
The maximum propagation delay for SI8660AB-AS1R is 35 ns, as specified in the "Timing Characteristics" table of the datasheet under "Propagation Delay tPHL, tPLH". This value applies across the full operating temperature range (–40 °C to 125 °C) and supply voltage range (2.5 V to 5.5 V), ensuring deterministic timing in safety-critical automotive control loops.
SI8660AB-AS1R 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:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- -
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- -
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8660AB-AS1R FAQ
1.How can I place an order for SI8660AB-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8660AB-AS1R 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 SI8660AB-AS1R reliable?
The price and inventory of SI8660AB-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8660AB-AS1R is usually 5 days.
3.What payment methods are accepted for SI8660AB-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8660AB-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8660AB-AS1R?
SI8660AB-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8660AB-AS1R 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 SI8660AB-AS1R?
For technical support, including SI8660AB-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8660AB-AS1R requirements.
6.How does Aetrix verify that SI8660AB-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8660AB-AS1R 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 SI8660AB-AS1R meets industry standards.
7.What is the process for return or replacement of SI8660AB-AS1R?
All SI8660AB-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8660AB-AS1R, 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 SI8660AB-AS1R part is unused and in its original packaging.
Return procedure for SI8660AB-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8660AB-AS1R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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