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Skyworks Solutions Inc. SI88222ED-ASR
- Part No.:
- SI88222ED-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88222ED-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:3,225
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Product details
Overview
SI88222ED-ASR from Skyworks Solutions is a dual-channel digital isolator with integrated isolated DC-DC converter, delivering up to 5 W output power, supporting 0–100 Mbps data rates, achieving ≤23 ns propagation delay, and rated for 5000 VRMS isolation. It operates across –40 to +125 °C and is AEC-Q100 qualified for automotive systems requiring reinforced insulation and high transient immunity.
For engineers reviewing the SI88222ED-ASR datasheet, SI88222ED-ASR pinout, SI88222ED-ASR application, or SI88222ED-ASR equivalent, this page provides verified technical context on its RF-based isolation architecture, SOIC-16 wide-body package, dual unidirectional channel configuration, and integrated flyback DC-DC controller with soft-start, shutdown, and external frequency control capability.
Technical Context
The SI88222ED-ASR implements two independent unidirectional CMOS digital isolation channels using RF on-off keying across a silicon dioxide capacitive barrier, eliminating startup initialization and providing robust noise immunity. Its integrated DC-DC controller uses peak current mode control with closed-loop feedback via VSNS/COMP pins and supports both internal (VSW) and external (ESW/RSN) switch configurations.
This variant belongs to the Si8822x subfamily and features fixed 250 kHz switching frequency, SH pin for converter shutdown, SS pin for soft-start capacitor programming, and DNC/VREGB pin designated as Do Not Connect when output voltage ≤5.5 V - consistent with low-voltage input (3–5.5 V) to isolated 3/5 V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute per UL 1577; enables reinforced insulation in industrial and automotive safety-critical systems. |
| Data Rate | 0–100 Mbps max; supports high-speed serial interfaces including SPI, RS-485, and CAN FD without timing constraints. |
| Propagation Delay | ≤23 ns max; ensures precise timing alignment between isolated domains in motor control and data acquisition. |
| DC-DC Output Power | Up to 5 W peak with external power switch; powers secondary-side logic and peripheral loads without discrete DC-DC stage. |
| Operating Temp | –40 to +125 °C; qualified for under-hood automotive and industrial environments with thermal shutdown protection. |
| Transient Immunity | 100 kV/µs typical; maintains signal integrity during fast EFT/burst events in noisy motor drive and inverter applications. |
| AEC-Q100 Grade | Qualified per AEC-Q100 Rev G; supports PPAP documentation and IMDS/CAMDS compliance for automotive OEM supply chains. |
Pinout & Package
SI88222ED-ASR is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 2.3 mm height) with creepage/clearance ≥8.3 mm, certified to UL, VDE, CSA, and CQC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDDP, VSW, GNDP, VDDA, GNDA, SH | Primary-side power, internal switch output, primary ground, signal supply, signal ground, and shutdown control for DC-DC converter. |
| 7, 8, 9, 10 | A1, A2, B1, B2 | Unidirectional digital I/O channels: A1/A2 transmit from primary to secondary; B1/B2 receive from secondary to primary. |
| 11, 12, 13, 14, 15, 16 | GNDB, VDDB, VSNS, COMP, NC, DNC/VREGB | Secondary ground, secondary signal supply, feedback sensing, loop compensation, no-connect, and Do Not Connect reference pin (≤5.5 V output). |
Key Features
| Feature | Design Value |
|---|---|
| RF-based digital isolation | Eliminates optocoupler aging and startup delays; achieves 18 ns typical prop delay and superior magnetic field immunity. |
| Integrated flyback DC-DC controller | Reduces BOM count by replacing discrete isolated power stages; supports 3/5 V → isolated 3/5 V conversion with <2 W average output. |
| Programmable soft-start (SS) | Prevents inrush current damage during power-up by controlling ramp rate via external capacitor; critical for reliability in PLC and EV battery management. |
| Converter shutdown (SH) | Allows system-level power sequencing and fault recovery by disabling DC-DC output while preserving isolation channel operation. |
| Secondary-side voltage sensing (VSNS) | Enables precise line/load regulation without optocouplers or secondary-side biasing circuitry, improving long-term stability in industrial power supplies. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
Use Scenario: Isolating gate driver signals and ADC feedback in 3-phase inverter drives for HVAC compressors and traction inverters. IC Role / Device Role / Timing Role: Dual-channel isolator provides independent forward/reverse signal paths with matched propagation delay for PWM timing integrity. Use Value: Enables safe high-side/low-side switching at 100 Mbps with 23 ns delay matching, reducing shoot-through risk in SiC/GaN-based inverters. | Use Scenario: Signal and power isolation between MCU domain and high-voltage battery pack monitoring circuits in BEV/PHEV systems. IC Role / Device Role / Timing Role: Provides reinforced insulation (5000 VRMS) and AEC-Q100 qualification while powering isolated ADCs and couplers from single 12 V rail. Use Value: Eliminates need for separate isolated DC-DC module, reducing footprint and cost in compact battery junction boxes. |
| Programmable Logic Controllers | Isolated Data Acquisition |
Use Scenario: Digital I/O isolation between field-side sensors/actuators and controller CPU in distributed I/O modules. IC Role / Device Role / Timing Role: Dual unidirectional channels isolate discrete inputs (B1/B2) and outputs (A1/A2), with SH pin enabling safe I/O disable during firmware updates. Use Value: Supports hot-swap capability and failsafe state retention via UVLO monitoring on both sides, meeting IEC 61000-4-5 surge immunity requirements. | Use Scenario: Isolating precision analog front-end (AFE) data paths in medical-grade patient monitors and test equipment. IC Role / Device Role / Timing Role: Transmits synchronized sampling clocks and digitized sensor data across isolation barrier with sub-23 ns jitter contribution. Use Value: Maintains 16-bit+ ENOB performance by minimizing timing skew between isolated clock and data lines in multi-channel ADC systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated DC-DC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6210ARWZ | 2-channel isolator + isolated 3.3 V DC-DC; 500 VRMS rating; no programmable shutdown or soft-start; uses iCoupler magnetic coupling. | Limited to lower isolation voltage and power (up to 2 W); not AEC-Q100 qualified; lacks RSN/ESW for high-voltage primary designs. | Choose ADUM6210ARWZ only for non-automotive, low-isolation (<1 kVRMS), space-constrained applications where magnetic coupling suffices. |
| ISO7821FDWR | Dual-channel digital isolator only - no integrated DC-DC; requires external isolated power; 5000 VRMS; 100 Mbps; 11 ns prop delay. | Requires discrete isolated DC-DC (e.g., transformer + regulator), increasing design complexity, BOM count, and board area. | Choose ISO7821FDWR when system already includes isolated power or when higher speed (11 ns) and lower power consumption outweigh integration benefits. |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88222ED-ASR uniquely combines AEC-Q100 qualification, 5000 VRMS isolation, integrated 5 W-capable DC-DC with programmable soft-start/shutdown, and RF-based timing precision - making it optimal for automotive and industrial systems demanding full functional integration and safety certification.
Availability
SI88222ED-ASR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and isolated data acquisition requiring stable component supply, long lifecycle support, and traceable sourcing.
Supply support for SI88222ED-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 semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si88xx family was designed to replace optocouplers and discrete isolated power stages in safety-critical systems, targeting automotive, industrial automation, and energy infrastructure applications requiring high reliability and regulatory compliance.
FAQ
What is the maximum data rate supported by SI88222ED-ASR?
The SI88222ED-ASR supports a maximum data rate of 100 Mbps across both isolation channels. This is confirmed in the official Skyworks datasheet (206584B, p.1), where all Si88x2x devices are specified for 0–100 Mbps operation. The RF-based modulation scheme enables this high rate while maintaining low propagation delay (≤23 ns) and high noise immunity. SI88222ED-ASR achieves this without requiring external clock conditioning or equalization.
Does SI88222ED-ASR include an integrated DC-DC converter?
Yes, SI88222ED-ASR integrates a fully functional isolated DC-DC converter based on a modified flyback topology. As stated in the datasheet (p.1), it delivers regulated 3.3 V or 5.0 V outputs with peak power up to 5 W when used with an external power switch. The converter includes user-adjustable features: soft-start (via SS pin), shutdown (via SH pin), and internal 250 kHz switching frequency - all confirmed for the Si8822x series.
What package type and isolation rating does SI88222ED-ASR use?
SI88222ED-ASR uses a SOIC-16 wide-body package with 10.3 mm × 10.3 mm footprint and ≥8.3 mm creepage/clearance. It is certified for 5000 VRMS isolation for one minute per UL 1577, and also meets CSA 62368-1 (reinforced insulation), VDE 62368-1, and CQC GB4943.1 standards - all explicitly listed in the "Safety Regulatory Approvals" section (p.1) of the datasheet.
Is SI88222ED-ASR qualified for automotive applications?
Yes, SI88222ED-ASR is AEC-Q100 qualified (Grade 0, –40 to +125 °C) and designated as an automotive-grade part. The datasheet confirms automotive-specific manufacturing flows, AIAG-compliant PPAP documentation support, and IMDS/CAMDS listing - all detailed in the "Automotive Grade" section (p.1). Its 100 kV/µs transient immunity and reinforced insulation make it suitable for battery management and inverter control in BEVs/PHEVs.
What is the function of the DNC/VREGB pin on SI88222ED-ASR?
The DNC/VREGB pin on SI88222ED-ASR is designated as "Do Not Connect" when the isolated DC-DC output voltage is ≤5.5 V - which applies to standard 3.3 V or 5.0 V configurations. As clarified in Table 1 (p.6), this pin contains an internal Zener and is intended only as a voltage reference for external regulators when output exceeds 5.5 V. For SI88222ED-ASR's typical low-voltage operation, it must remain unconnected to avoid malfunction.
SI88222ED-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si88x2x
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 0/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 40kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 23ns
- Pulse Width Distortion (Max):
- 7ns
- 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
SI88222ED-ASR FAQ
1.How can I place an order for SI88222ED-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88222ED-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 SI88222ED-ASR reliable?
The price and inventory of SI88222ED-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88222ED-ASR is usually 5 days.
3.What payment methods are accepted for SI88222ED-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88222ED-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88222ED-ASR?
SI88222ED-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88222ED-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 SI88222ED-ASR?
For technical support, including SI88222ED-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88222ED-ASR requirements.
6.How does Aetrix verify that SI88222ED-ASR is sourced from the original manufacturer or authorized distributors?
All SI88222ED-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 SI88222ED-ASR meets industry standards.
7.What is the process for return or replacement of SI88222ED-ASR?
All SI88222ED-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88222ED-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 SI88222ED-ASR part is unused and in its original packaging.
Return procedure for SI88222ED-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88222ED-ASR Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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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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