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Skyworks Solutions Inc. SI8452AB-A-IS1
- Part No.:
- SI8452AB-A-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8452AB-A-IS1.pdf
- Description:
- DGTL ISO 2500VRMS 5CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,116
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Product details
Overview
SI8452AB-A-IS1 from Skyworks Solutions is a five-channel, ultra-low-power digital isolator in a 16-pin narrow-body SOIC package, supporting up to 150 Mbps data rate with <9.5 ns worst-case propagation delay, 25 kV/µs CMTI, and 2.5 kVRMS isolation voltage. It operates across 2.70–5.5 V supply rails and delivers <12.6 mA per side at 100 Mbps (5 V), enabling high-speed isolated communication in motor control and industrial power systems.
For engineers reviewing the SI8452AB-A-IS1 datasheet, SI8452AB-A-IS1 pinout, SI8452AB-A-IS1 application, or SI8452AB-A-IS1 equivalent, this page provides verified specifications, real-world timing behavior, safety certification details, and validated alternative options for industrial and automotive signal isolation design.
Technical Context
The SI8452AB-A-IS1 implements capacitive isolation with on-chip RF modulation/demodulation, delivering precise timing performance: typical pulse width distortion of 1.5 ns and channel-to-channel skew of 0.5 ns. Its dual-supply architecture (VDD1/VDD2) supports independent 2.70–5.5 V operation on each side, enabling level-shifting between logic domains without external components.
It features an active-enable input per channel pair (EN1/EN2), with enable-to-data-valid delay of 5.0–8.0 ns and tri-state transition in 7.0–9.2 ns. The device achieves 60-year lifetime at rated working voltage and meets reinforced insulation requirements per IEC 60950-1, IEC 61010-1, and IEC 60747-5-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional isolated channels - supports full-duplex or asymmetric I/O configurations across isolation barrier |
| Max Data Rate | 150 Mbps - enables high-speed serial interfaces (e.g., isolated SPI clock, encoder feedback, fast ADC streams) |
| Propagation Delay | 3.0–9.5 ns - ensures sub-10 ns timing budget for real-time control loops in motor drives and inverters |
| Isolation Voltage | 2500 VRMS - certified for reinforced insulation per UL 1577, CSA 5A, and VDE 0884-2 (IEC 60747-5-2) |
| CMTI | 25 kV/µs - maintains signal integrity in noisy environments like variable-frequency drives and SMPS gate drivers |
| Supply Range | 2.70–5.5 V per side - allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level shifters |
| Operating Temp | –40 to +125 °C at 150 Mbps - qualified for under-hood automotive and industrial ambient conditions |
Pinout & Package
SI8452AB-A-IS1 is housed in a 16-pin narrow-body SOIC (SOIC-16 NB) package with 1.27 mm pitch, 10.3 mm × 6.4 mm footprint, and 2.35 mm max height. Creepage and clearance meet 4.01 mm and 4.9 mm respectively per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for inputs and channel 1–3 drivers; must be decoupled with 0.1 µF capacitor near pin |
| GND1 | Primary-side ground | Reference for VDD1 domain; separate from secondary-side ground to maintain isolation barrier |
| IN1–IN3 | Input signals (side 1) | CMOS-compatible inputs accepting 0–VDD1 logic; no start-up initialization required |
| EN1 | Enable for channels 1–3 | Active-high control: outputs go high-impedance when low; 5.0–8.0 ns enable-to-valid latency |
| VDD2 | Secondary-side supply | Power for outputs and channels 4–5 receivers; supports independent voltage domain from VDD1 |
| GND2 | Secondary-side ground | Reference for VDD2 domain; galvanically isolated from GND1 |
| OUT1–OUT3 | Isolated outputs (side 2) | CMOS outputs with 85 Ω nominal impedance; require controlled-impedance PCB routing above 50 Mbps |
| IN4–IN5 | Input signals (side 2) | Inputs referenced to VDD2/GND2; enable bidirectional isolation without external direction control |
| EN2 | Enable for channels 4–5 | Independent enable for secondary-side inputs; matches EN1 timing specs and drive strength |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 4.1–4.6 mA per side at 1 Mbps (2.7–5 V), enabling battery-backed or energy-constrained isolated interfaces |
| Precision timing | 0.5 ns channel-to-channel skew and 1.5 ns pulse width distortion - critical for synchronized sampling in multi-axis motor control |
| No start-up initialization | Valid output within 15–40 µs of power application - eliminates boot-time uncertainty in safety-critical systems |
| High EMI immunity | 25 kV/µs common-mode transient immunity - sustains operation during fast-switching events in SiC/GaN inverters |
| RoHS-compliant packaging | Lead-free narrow-body SOIC-16 with 260 °C reflow rating - compatible with standard SMT assembly processes |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Real-time position/speed feedback from encoders and current sensing in servo drives. IC Role / Device Role / Timing Role: Isolates high-speed PWM and encoder quadrature signals across 400 V DC bus while preserving sub-10 ns edge alignment. Use Value: Enables closed-loop bandwidth >20 kHz with deterministic latency, reducing torque ripple and improving dynamic response. |
Use Scenario: Feedback path from secondary-side voltage/current sensors to primary-side PWM controller in AC-DC or DC-DC converters. IC Role / Device Role / Timing Role: Transmits error amplifier output and overcurrent flags across isolation barrier with <9.5 ns delay and 25 kV/µs noise rejection. Use Value: Supports >1 MHz switching frequencies with stable regulation and fast fault shutdown (<100 ns system-level response). |
| Hybrid Electric Vehicle Inverter | Isolated Data Acquisition |
Use Scenario: Gate driver signal transmission and fault reporting between MCU and IGBT/SiC half-bridge modules. IC Role / Device Role / Timing Role: Delivers isolated gate enable/disable and DESAT feedback with matched propagation delay across all 5 channels. Use Value: Prevents shoot-through by ensuring <1 ns inter-channel skew between complementary drive signals. |
Use Scenario: Isolating high-resolution ADC/DAC interfaces in programmable logic controllers and test equipment. IC Role / Device Role / Timing Role: Transfers serial clock, data, and frame sync across isolation barrier with jitter <0.5 ps RMS at 100 Mbps. Use Value: Maintains ENOB >16 bits in isolated 1 MSPS SAR ADC systems by minimizing timing-induced aperture uncertainty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141D1BRZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16; higher 10.5 ns max propagation delay; no enable pins | Lacks per-group enable control; less suitable for partial-channel shutdown in power-constrained systems | Preferred where fixed 4-channel count suffices and enable functionality is unnecessary |
| ISO6741FDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16; lower speed but higher isolation rating; integrated LDO on secondary side | Supports higher working voltages (800 VRMS) but cannot match 150 Mbps timing-critical links | Chosen when enhanced creepage/clearance or local secondary-side power regulation is prioritized over speed |
Compared with ADUM141D1BRZ and ISO6741FDWR, SI8452AB-A-IS1 uniquely combines five isolated channels, per-group enable control, sub-10 ns propagation delay, and 150 Mbps capability - making it optimal for compact, high-bandwidth industrial inverters requiring selective channel gating.
Availability
SI8452AB-A-IS1 is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle inverters, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and certified 2.5 kVRMS isolation.
Supply support for SI8452AB-A-IS1 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 wireless, automotive, and industrial markets.
The Si84xx family was designed specifically for high-reliability, high-speed digital isolation in harsh environments - targeting applications demanding low power, precise timing, and regulatory-certified reinforced insulation without optical or magnetic compromises.
FAQ
What is the maximum data rate supported by SI8452AB-A-IS1?
The SI8452AB-A-IS1 supports a maximum data rate of 150 Mbps under specified operating conditions (VDD = 5 V, TA = –40 to +125 °C, CL = 15 pF). This is confirmed in Tables 3–5 of the datasheet for Si845xBx variants, and applies directly to SI8452AB-A-IS1 as a B-grade, 5-channel member of the Si8452 family.
Does SI8452AB-A-IS1 require external startup circuitry or configuration?
No, SI8452AB-A-IS1 requires no start-up initialization or external configuration. Valid output data appears within 15–40 µs after power application (tSU), as specified in Table 3. Only VDD bypass capacitors (0.1 µF ceramic) are needed - no pull-ups, programming, or calibration is required for functional operation.
What safety certifications apply to SI8452AB-A-IS1?
SI8452AB-A-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE 0884-2 (IEC 60747-5-2). These cover reinforced insulation with 560 VPEAK working voltage, 3600 VRMS surge withstand, and 60-year lifetime at rated voltage - all verified for the SOIC-16 NB package.
Can SI8452AB-A-IS1 operate with different supply voltages on each side?
Yes, SI8452AB-A-IS1 supports independent supply rails: VDD1 (2.70–5.5 V) powers the primary-side inputs and channels 1–3, while VDD2 (2.70–5.5 V) powers the secondary-side outputs and channels 4–5. This enables seamless level shifting between 3.3 V and 5 V logic domains without external translators.
Is SI8452AB-A-IS1 recommended for new designs?
No - Skyworks explicitly marks the Si8450/51/52/55 family as "Not Recommended for New Designs" in Rev. 1.6 (August 2021). While SI8452AB-A-IS1 remains available and fully functional, designers should evaluate Skyworks' newer Si86xx or Si88xx families for long-term roadmap alignment and enhanced features such as higher CMTI or integrated DC-DC.
SI8452AB-A-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 5
- Inputs - Side 1/Side 2:
- 3/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 35ns, 35ns
- Pulse Width Distortion (Max):
- 25ns
- Rise / Fall Time (Typ):
- 3.8ns, 2.8ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8452AB-A-IS1 FAQ
1.How can I place an order for SI8452AB-A-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8452AB-A-IS1 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 SI8452AB-A-IS1 reliable?
The price and inventory of SI8452AB-A-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8452AB-A-IS1 is usually 5 days.
3.What payment methods are accepted for SI8452AB-A-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8452AB-A-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8452AB-A-IS1?
SI8452AB-A-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8452AB-A-IS1 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 SI8452AB-A-IS1?
For technical support, including SI8452AB-A-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8452AB-A-IS1 requirements.
6.How does Aetrix verify that SI8452AB-A-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8452AB-A-IS1 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 SI8452AB-A-IS1 meets industry standards.
7.What is the process for return or replacement of SI8452AB-A-IS1?
All SI8452AB-A-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8452AB-A-IS1, 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 SI8452AB-A-IS1 part is unused and in its original packaging.
Return procedure for SI8452AB-A-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8452AB-A-IS1 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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