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Skyworks Solutions Inc. SI8452BB-B-IS1R
- Part No.:
- SI8452BB-B-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8452BB-B-IS1R.pdf
- Description:
- DGTL ISO 2500VRMS 5CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,184
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Product details
Overview
SI8452BB-B-IS1R 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, 2.7–5.5 V dual supply operation, and 2500 VRMS reinforced isolation for industrial motor control and isolated power conversion.
For engineers reviewing the SI8452BB-B-IS1R datasheet, SI8452BB-B-IS1R pinout, SI8452BB-B-IS1R application, or SI8452BB-B-IS1R equivalent, this page delivers verified timing specs, safety certifications (UL/CSA/VDE), channel-specific current consumption at 1/100 Mbps, and precise skew metrics critical for high-speed isolated communication in HEV inverters and isolated ADC interfaces.
Technical Context
The SI8452BB-B-IS1R implements capacitive isolation with on-chip RF modulation/demodulation across five independent channels, enabling bidirectional or unidirectional signal transfer without start-up initialization. Its architecture supports simultaneous operation across two independent supply domains (VDD1/VDD2) with full common-mode transient immunity of 25 kV/µs.
Each channel features matched output impedance (~85 Ω), sub-2.5 ns pulse width distortion, and ≤1.8 ns channel-to-channel skew-enabling precise timing synchronization in multi-phase gate driver control loops and isolated feedback paths where deterministic latency is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables real-time control loop closure in 20 kHz+ motor drives and fast isolated sensor readouts. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns latency for time-critical isolated PWM edge transmission. |
| Channel-Channel Skew | ≤1.8 ns (max) - maintains phase alignment across multiple isolated gate drive or feedback signals. |
| Supply Voltage Range | 2.70–5.5 V per side - supports interoperability with 3.3 V microcontrollers and 5 V analog front-ends. |
| Isolation Rating | 2500 VRMS (1 min) - certified for reinforced insulation in IEC 61010-1 and IEC 60950-1 systems. |
| CMTI | ≥25 kV/µs - prevents false triggering during fast-switching transients in SiC/GaN inverter stages. |
| Power @ 100 Mbps | 12.6–15.8 mA per side (5 V) - enables low-heat dissipation in thermally constrained industrial enclosures. |
Pinout & Package
SI8452BB-B-IS1R 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 VDE/UL/CSA requirements for 2500 VRMS working voltage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5 | Input Channels A–E (Side 1) | CMOS-compatible logic inputs referenced to VDD1; accept 2.0 V VIH / 0.8 V VIL thresholds. |
| 6, 7, 8 | VDD1, GND1, EN1 | VDD1 powers Side 1 logic; EN1 enables/disables all Side 1 outputs (low = tri-state). |
| 9, 10, 11, 12, 13 | Output Channels A–E (Side 2) | CMOS outputs referenced to VDD2; drive 4 mA sink/source with VOH ≥ VDD2–0.4 V. |
| 14, 15, 16 | VDD2, GND2, EN2 | VDD2 powers Side 2 logic; EN2 controls Side 2 output enable state independently of EN1. |
Key Features
| Feature | Design Value |
|---|---|
| Five independent isolation channels | Enables full isolation of three-phase gate drive + two feedback signals in compact motor drive PCB layouts. |
| No start-up initialization required | Guarantees immediate functional operation after power-on, eliminating boot-time delays in safety-critical systems. |
| Ultra-low power at 100 Mbps | 12.6–15.8 mA per supply rail (5 V) reduces thermal load vs. optocoupler-based alternatives in sealed enclosures. |
| Precise timing control | ≤1.8 ns channel-to-channel skew and ≤2.5 ns pulse width distortion support synchronized multi-channel sampling. |
| 25 kV/µs CMTI | Prevents data corruption during 100 V/ns switching edges in 650 V SiC half-bridges without external filtering. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
|
Use Scenario: Isolating PWM signals and current-sense feedback in 3-phase inverter stacks driving PMSM/BLDC motors. IC Role / Device Role / Timing Role: Five-channel isolator transmitting gate drive commands (Ch A–C) and isolated current/voltage sense data (Ch D–E) across reinforced barrier. Use Value: Sub-10 ns propagation delay and ≤1.8 ns skew ensure tight dead-time control and accurate current reconstruction at 20 kHz switching frequency. |
Use Scenario: Providing primary-to-secondary isolation for feedback signals and gate drive in LLC resonant converters. IC Role / Device Role / Timing Role: Transmitting isolated error amplifier output and synchronous rectifier control signals while maintaining galvanic separation. Use Value: 2500 VRMS rating and 25 kV/µs CMTI withstand fast dv/dt noise from high-frequency transformer coupling without data loss. |
| Hybrid Electric Vehicle Inverter | Isolated Data Acquisition |
|
Use Scenario: Isolating MCU-generated PWM and fault reporting between traction inverter control board and high-voltage DC link stage. IC Role / Device Role / Timing Role: Delivering time-aligned gate drive pulses (Ch A–C) and receiving isolated overcurrent/temperature alerts (Ch D–E) across 650 V bus. Use Value: 150 Mbps capability supports high-resolution PWM dithering; 125 °C ambient rating ensures reliability under hood conditions. |
Use Scenario: Isolating serial interface lines (SPI clock/data) and analog monitor outputs between isolated ADC front-end and host processor. IC Role / Device Role / Timing Role: Transmitting synchronized sample clocks and digitized sensor data across isolation barrier in medical or test equipment. Use Value: Matched propagation delay (<9.5 ns) and low jitter preserve timing integrity for 1 MSPS+ sampling rates without clock deskew compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141DARZ | Four-channel, 150 Mbps, 2.5 kVRMS, SOIC-16; no independent enable pins per side. | Lacks fifth channel and separate EN1/EN2 control-requires external logic for asymmetric enable sequencing. | Select when four-channel count suffices and simplified enable architecture is acceptable. |
| ISO6751QDR | Five-channel, 50 Mbps, 5 kVRMS, SOIC-16; higher isolation but lower speed and higher power at 100 Mbps. | Lower data rate limits use in >50 kHz PWM systems; higher isolation suits medical-grade designs. | Choose for applications prioritizing 5 kVRMS over 150 Mbps performance and ultra-low power. |
Compared with ADUM141DARZ and ISO6751QDR, SI8452BB-B-IS1R uniquely delivers five 150 Mbps channels with per-side enable control and 12.6 mA power draw at 100 Mbps-making it optimal for space-constrained, high-speed industrial inverters requiring precise multi-signal timing.
Availability
SI8452BB-B-IS1R 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 and long-term lifecycle assurance.
Supply support for SI8452BB-B-IS1R 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 Si84xx family was designed specifically for high-reliability industrial and automotive isolation applications demanding low power, high speed, and certified reinforced insulation-targeting motor drives, power supplies, and EV subsystems.
FAQ
What is the maximum operating temperature for SI8452BB-B-IS1R?
The SI8452BB-B-IS1R operates reliably from –40 °C to +125 °C at full 150 Mbps data rate with 15 pF load and 5 V supply. This rating is validated per Table 1 in the datasheet and applies across its entire specified supply range (2.7–5.5 V), making SI8452BB-B-IS1R suitable for under-hood automotive and high-ambient industrial environments.
Does SI8452BB-B-IS1R require external bypass capacitors?
Yes-SI8452BB-B-IS1R requires 0.1 µF ceramic bypass capacitors placed as close as possible to each VDD pin (pins 6 and 14) relative to its respective ground (pins 7 and 15). The datasheet explicitly states "only VDD bypass capacitors are required" for stable operation, with no additional external components needed for basic functionality.
How many isolation channels does SI8452BB-B-IS1R provide?
SI8452BB-B-IS1R provides five fully independent digital isolation channels (A–E), each capable of bidirectional or unidirectional signal transfer. Channel mapping is fixed: inputs on pins 1–5 (Side 1), outputs on pins 9–13 (Side 2), enabling simultaneous isolation of multiple control and feedback paths in compact designs.
What safety certifications apply to SI8452BB-B-IS1R?
SI8452BB-B-IS1R is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (reinforced insulation). These approvals cover the full 2500 VRMS isolation rating and are production-tested to 3000 VRMS for 1 second, as documented in Tables 6 and 7 of the official datasheet.
Is SI8452BB-B-IS1R recommended for new designs?
No-Skyworks explicitly marks SI8452BB-B-IS1R as "Not Recommended for New Designs" in Rev. 1.6 of the datasheet (August 2021). While fully functional and supported, designers are advised to evaluate newer-generation isolators such as the Si86xx or Si88xx families for improved power efficiency, enhanced CMTI, or extended temperature range in greenfield projects.
SI8452BB-B-IS1R 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:
- 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:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.5ns, 9.5ns
- Pulse Width Distortion (Max):
- 2.5ns
- 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
SI8452BB-B-IS1R FAQ
1.How can I place an order for SI8452BB-B-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8452BB-B-IS1R 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 SI8452BB-B-IS1R reliable?
The price and inventory of SI8452BB-B-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8452BB-B-IS1R is usually 5 days.
3.What payment methods are accepted for SI8452BB-B-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8452BB-B-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8452BB-B-IS1R?
SI8452BB-B-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8452BB-B-IS1R 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 SI8452BB-B-IS1R?
For technical support, including SI8452BB-B-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8452BB-B-IS1R requirements.
6.How does Aetrix verify that SI8452BB-B-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8452BB-B-IS1R 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 SI8452BB-B-IS1R meets industry standards.
7.What is the process for return or replacement of SI8452BB-B-IS1R?
All SI8452BB-B-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8452BB-B-IS1R, 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 SI8452BB-B-IS1R part is unused and in its original packaging.
Return procedure for SI8452BB-B-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8452BB-B-IS1R 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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