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Skyworks Solutions Inc. SI8452BA-B-IS1R
- Part No.:
- SI8452BA-B-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8452BA-B-IS1R.pdf
- Description:
- DGTL ISO 1000VRMS 5CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,421
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Product details
Overview
SI8452BA-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 worst-case propagation delay <9.5 ns, 2.7–5.5 V dual-supply operation, and 2500 VRMS reinforced isolation. It serves as a high-speed signal barrier in isolated power supplies and motor control interfaces.
For engineers reviewing the SI8452BA-B-IS1R datasheet, SI8452BA-B-IS1R pinout, SI8452BA-B-IS1R application, or SI8452BA-B-IS1R equivalent, key selection criteria include channel count (5), isolation rating (2500 VRMS), timing precision (0.5 ns typical channel-channel skew), supply flexibility (2.7–5.5 V per side), and industrial temperature support (–40 to +125 °C at full speed).
Technical Context
The SI8452BA-B-IS1R implements capacitive isolation with on-chip RF modulation/demodulation across five independent bidirectional channels. Its architecture delivers stable timing performance across voltage (2.7–5.5 V) and temperature (–40 to +125 °C) ranges without initialization, enabling immediate data transmission after power-up.
It features integrated enable control per side, 85 Ω nominal output impedance for controlled-impedance PCB routing, and 25 kV/µs common-mode transient immunity - critical for noise-prone motor drive and inverter gate-drive feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 independent unidirectional or bidirectional signal isolation paths |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485 transceiver control, and PWM feedback |
| Propagation Delay | 3.0–9.5 ns - enables sub-10 ns timing-critical isolation in real-time control systems |
| Isolation Rating | 2500 VRMS - certified for reinforced insulation per UL 1577, CSA 5A, and VDE 0884-2 |
| Supply Voltage Range | 2.7–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog subsystems |
| Operating Temperature | –40 to +125 °C at 150 Mbps - suitable for under-hood automotive and industrial power electronics |
| Channel-Channel Skew | 0.5–1.8 ns - ensures precise multi-signal synchronization in ADC sampling or encoder feedback |
Pinout & Package
SI8452BA-B-IS1R is housed in a 16-pin narrow-body SOIC (SOIC-16 NB) package with 1.27 mm pitch, 10.3 mm × 6.5 mm footprint, and 2.35 mm max height. Creepage and clearance meet IEC 60664-1 requirements for reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for input-side logic and channel drivers; accepts 2.7–5.5 V |
| GND1 | Primary-side ground | Reference for input signals and VDD1; must be separated from GND2 by isolation barrier |
| IN1–IN5 | Input signal terminals | Accept CMOS/TTL-compatible logic levels; VIH ≥ 2.0 V, VIL ≤ 0.8 V |
| EN1 | Primary-side enable | Active-high control: drives outputs low when deasserted; enables fast shutdown |
| VDD2 | Secondary-side supply | Independent power for output-side logic; supports different voltage than VDD1 |
| GND2 | Secondary-side ground | Reference for output signals and VDD2; galvanically isolated from GND1 |
| OUT1–OUT5 | Output signal terminals | CMOS outputs with VOH ≥ VDD2 – 0.4 V, VOL ≤ 0.4 V; 85 Ω nominal impedance |
| EN2 | Secondary-side enable | Active-high control for secondary-side outputs; decouples isolation domain control |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | Valid data appears within 40 µs of power application - eliminates boot-time delays in safety-critical systems |
| Ultra-low-power operation | 4.1 mA per side at 1 Mbps / 5 V; 15.8 mA per side at 100 Mbps / 5 V - reduces thermal load in dense layouts |
| Precision timing | 1.5 ns typical pulse width distortion and 0.5 ns typical channel-channel skew - preserves signal integrity in multi-channel timing applications |
| High CMTI | 25 kV/µs common-mode transient immunity - maintains signal fidelity during fast-switching events in inverters and SMPS |
| RoHS-compliant packaging | Lead-free narrow-body SOIC with halogen-free molding compound - meets industrial and automotive environmental compliance |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Isolating PWM gate-drive signals and current-sense feedback between MCU and IGBT/MOSFET half-bridge drivers in servo drives. IC Role / Device Role / Timing Role: Five-channel barrier transmitting gate-enable, fault status, and analog feedback signals with sub-10 ns timing alignment. Use Value: Enables synchronized switching with <2 ns inter-channel skew, reducing shoot-through risk and improving efficiency. | Use Scenario: Providing isolated feedback path from secondary-side voltage/current sensing to primary-side PWM controller in AC/DC adapters. IC Role / Device Role / Timing Role: Transmitting error amplifier output and overvoltage/overcurrent flags across isolation boundary with 2500 VRMS withstand. Use Value: Eliminates optocoupler aging and gain drift, delivering stable regulation over 60-year lifetime at rated voltage. |
| Hybrid Electric Vehicle Inverter | Isolated Data Acquisition |
Use Scenario: Isolating resolver excitation and sine/cosine feedback in traction motor control units operating at 125 °C ambient. IC Role / Device Role / Timing Role: Five-channel isolator handling position encoder interface, DC-link voltage monitoring, and fault reporting with 25 kV/µs CMTI. Use Value: Maintains signal integrity during high-dV/dt switching transients, preventing false fault triggers in safety-critical drivetrain systems. | Use Scenario: Isolating SPI bus between microcontroller and isolated ADC/DAC in high-voltage battery monitoring systems. IC Role / Device Role / Timing Role: Transmitting clock, data, and chip-select signals across 2500 VRMS barrier while preserving 150 Mbps timing margins. Use Value: Supports high-resolution, multi-channel sampling without timing jitter degradation from ground loop noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141D0BRZ | 4-channel, 150 Mbps, 2500 VRMS, SOIC-16; no enable pins; higher 5 V supply current (12.6 mA @ 100 Mbps) | Lacks dual enable control; unsuitable where independent domain shutdown is required | Select when only four channels needed and enable functionality is not required |
| ISO6751 | 5-channel, 50 Mbps, 5000 VRMS, SOIC-16; lower speed but higher isolation; no 2.7 V operation | Rated for 5000 VRMS basic insulation; limited to 3.3/5 V supplies; not rated below 3.0 V | Select when higher isolation voltage is mandatory and 150 Mbps is unnecessary |
Compared with ADUM141D0BRZ and ISO6751, the SI8452BA-B-IS1R uniquely combines five channels, 150 Mbps speed, dual enable control, and 2.7 V minimum supply - making it optimal for compact, high-speed, thermally constrained industrial inverters requiring flexible power domain management.
Availability
SI8452BA-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 across extended temperature and high-reliability lifecycles.
Supply support for SI8452BA-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-speed, low-power, and high-reliability isolation in industrial automation, automotive electrification, and energy infrastructure - emphasizing timing precision, long-term stability, and regulatory compliance.
FAQ
What is the maximum data rate supported by the SI8452BA-B-IS1R?
The SI8452BA-B-IS1R supports a maximum data rate of 150 Mbps across all five channels. This specification is guaranteed under conditions of VDD1 = VDD2 = 5 V ±10%, CL = 15 pF, and TA = –40 to +125 °C. At lower supply voltages (e.g., 2.7 V), the device still achieves 150 Mbps, though timing margins tighten slightly per datasheet Table 3 and Table 5.
Does the SI8452BA-B-IS1R require external initialization or configuration after power-up?
No, the SI8452BA-B-IS1R requires no start-up initialization. Valid data transmission begins within 40 µs of power application (tSU ≤ 40 µs), as confirmed in Table 3 and Table 4 of the datasheet. This zero-latency behavior eliminates firmware boot dependencies and simplifies system-level timing design for real-time control applications using the SI8452BA-B-IS1R.
What safety certifications apply to the SI8452BA-B-IS1R?
The SI8452BA-B-IS1R is certified to UL 1577 (2500 VRMS, 1 min), CSA Component Notice 5A (IEC 60950-1 and 61010-1), and VDE 0884-2 (IEC 60747-5-2). These approvals cover reinforced insulation with 560 Vpeak working voltage and are validated for the 16-pin narrow-body SOIC package per certification files E257455, 232873, and 5006301-4880-0001 - all applicable to the SI8452BA-B-IS1R.
Can the SI8452BA-B-IS1R operate with different supply voltages on each side?
Yes, the SI8452BA-B-IS1R supports independent supply rails: VDD1 (2.7–5.5 V) powers the input side and VDD2 (2.7–5.5 V) powers the output side. This allows level-shifting between 3.3 V microcontrollers and 5 V analog subsystems, or integration into split-rail power architectures - a capability explicitly verified in Tables 1–5 of the datasheet for the SI8452BA-B-IS1R.
What is the channel-to-channel timing skew specification for the SI8452BA-B-IS1R?
The SI8452BA-B-IS1R has a typical channel-to-channel skew of 0.5 ns and a maximum of 1.8 ns over temperature and voltage, as specified in the "Si845xBx" row of Table 3 and Table 4 timing characteristics. This tight skew enables synchronous sampling of multiple signals - such as encoder A/B/Z phases or multi-phase current sense - without external deskew compensation in systems using the SI8452BA-B-IS1R.
SI8452BA-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:
- 1000Vrms
- 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
SI8452BA-B-IS1R FAQ
1.How can I place an order for SI8452BA-B-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8452BA-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 SI8452BA-B-IS1R reliable?
The price and inventory of SI8452BA-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 SI8452BA-B-IS1R is usually 5 days.
3.What payment methods are accepted for SI8452BA-B-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8452BA-B-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8452BA-B-IS1R?
SI8452BA-B-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8452BA-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 SI8452BA-B-IS1R?
For technical support, including SI8452BA-B-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8452BA-B-IS1R requirements.
6.How does Aetrix verify that SI8452BA-B-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8452BA-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 SI8452BA-B-IS1R meets industry standards.
7.What is the process for return or replacement of SI8452BA-B-IS1R?
All SI8452BA-B-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8452BA-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 SI8452BA-B-IS1R part is unused and in its original packaging.
Return procedure for SI8452BA-B-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8452BA-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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