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Skyworks Solutions Inc. SI8450AA-B-IS1
- Part No.:
- SI8450AA-B-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8450AA-B-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 5CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,710
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Product details
Overview
SI8450AA-B-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, 2.7–5.5 V dual supply operation, and 2500 VRMS reinforced isolation for industrial motor control and isolated power supply interfaces.
For engineers reviewing the SI8450AA-B-IS1 datasheet, SI8450AA-B-IS1 pinout, SI8450AA-B-IS1 application, or SI8450AA-B-IS1 equivalent, this page delivers verified timing specs, safety certifications (UL/CSA/VDE), channel-level current consumption at 1/100 Mbps, CMTI of 25 kV/µs, and precise skew metrics critical for high-speed isolated communication in HEV inverters and isolated ADC/DAC systems.
Technical Context
The SI8450AA-B-IS1 implements capacitive isolation with on-chip RF modulation/demodulation across five independent channels, enabling DC-to-150 Mbps signal transmission without start-up initialization. Its dual VDD1/VDD2 supplies support asymmetric voltage domains (e.g., 3.3 V logic side / 5 V system side) while maintaining channel-to-channel skew ≤1.8 ns and pulse width distortion ≤2.5 ns.
It features integrated enable control per side (EN1/EN2), supports 2.70 V minimum supply, and achieves 6 ns minimum pulse width at 150 Mbps. The device meets IEC 60747-5-2 (VDE 0884-2) and UL 1577 standards with 560 VPEAK working voltage and 1050 VPEAK production-tested transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 independent unidirectional isolation channels |
| Max Data Rate | 150 Mbps - enables real-time feedback in servo drives and high-resolution isolated ADC sampling |
| Propagation Delay | 3.0–9.5 ns - ensures sub-10 ns timing accuracy for synchronous PWM gate driving |
| Channel-Channel Skew | ≤1.8 ns - maintains phase alignment across multi-channel sensor or encoder interfaces |
| Isolation Voltage | 2500 VRMS - certified for reinforced insulation in 300 VRMS working voltage systems |
| CMTI | 25 kV/µs - suppresses noise-induced glitches in high-dV/dt motor inverter environments |
| Supply Range | 2.70–5.5 V per side - supports mixed-voltage system interfacing without level shifters |
| Power @ 100 Mbps | 4.6–30 mA per side - enables low-heat operation in thermally constrained industrial enclosures |
Pinout & Package
SI8450AA-B-IS1 uses 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/clearance meet VDE/CSA requirements (4.01 mm creepage, 4.9 mm clearance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for input-side logic and channel 1–3 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–IN3 | Input channels 1–3 | Digital inputs referenced to GND1; VIH ≥2.0 V, VIL ≤0.8 V |
| EN1 | Primary-side enable | Active-high control: disables outputs (high-Z) when low; ten1 ≤8 ns |
| VDD2 | Secondary-side supply | Power for output-side logic and channel 4–5 receivers; independent 2.7–5.5 V domain |
| GND2 | Secondary-side ground | Reference for output signals and VDD2; galvanically isolated from GND1 |
| OUT1–OUT3 | Output channels 1–3 | CMOS outputs referenced to GND2; VOH ≥VDD2–0.4 V, VOL ≤0.4 V |
| EN2 | Secondary-side enable | Active-high control: disables OUT4/OUT5 when low; ten2 ≤9.2 ns |
| IN4–IN5 | Input channels 4–5 | Digital inputs referenced to GND2; supports bidirectional signal routing across isolation barrier |
| OUT4–OUT5 | Output channels 4–5 | CMOS outputs referenced to GND1; completes full 5-channel isolation with flexible directionality |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | Valid data appears within 40 µs of power-on - eliminates boot-time delays in safety-critical PLC I/O modules |
| Ultra-low power at 100 Mbps | <30 mA total supply current at 5 V - reduces thermal load in densely packed motor drive PCBs |
| Precise timing control | 0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion - enables synchronized multi-axis motion control |
| High CMTI immunity | 25 kV/µs common-mode transient rejection - prevents false triggering during IGBT switching transients |
| RoHS-compliant SOIC-16 NB | Standard surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
| 60-year life at rated voltage | Proven reliability under continuous 2500 VRMS stress - suitable for long-lifecycle industrial infrastructure |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Isolating gate-drive signals and current-sense feedback in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Five-channel isolator transmitting PWM commands (CH1–CH3) and sensing data (CH4–CH5) across primary/secondary barriers. Use Value: Sub-10 ns propagation delay and ≤1.8 ns skew ensure precise dead-time control and prevent shoot-through faults. |
Use Scenario: Providing feedback isolation for secondary-side voltage regulation and primary-side controller communication. IC Role / Device Role / Timing Role: Transmitting error amplifier output and synchronous rectifier timing signals across isolation boundary. Use Value: 150 Mbps capability supports fast-loop compensation in digitally controlled LLC resonant converters. |
| Hybrid Electric Vehicle Inverter | Isolated ADC/DAC Interface |
Use Scenario: Isolating resolver excitation and position decoding signals in traction motor control units. IC Role / Device Role / Timing Role: Delivering high-fidelity analog encoder interface signals (IN4/IN5) and PWM gate commands (OUT1–OUT3) with minimal jitter. Use Value: 25 kV/µs CMTI prevents position errors during high-dV/dt IGBT commutation events. |
Use Scenario: Interfacing isolated sigma-delta ADCs (e.g., AMC1306) and DACs to host microcontrollers in precision test equipment. IC Role / Device Role / Timing Role: Transmitting oversampled bitstream data and clock signals across isolation barrier with deterministic latency. Use Value: 6 ns minimum pulse width and <2.5 ns PWD preserve timing integrity of high-speed bitstream protocols. |
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, 2.5 kVRMS, SOIC-16; no enable pins; higher 32 mA supply current at 100 Mbps | Lacks EN1/EN2 control; unsuitable where dynamic channel disabling is required for fault response | Choose when only four channels are needed and enable functionality is unnecessary |
| ISO6741FDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16; lower speed but higher isolation rating; 10 mA supply at 100 Mbps (derated) | Insufficient for 150 Mbps encoder interfaces; preferred where >3.75 kVRMS working voltage is mandated | Choose when regulatory requirements demand >3.75 kVRMS isolation and data rates ≤50 Mbps suffice |
Compared with ADUM141D0BRZ and ISO6741FDWR, SI8450AA-B-IS1 uniquely provides five channels with dual enable control, 150 Mbps performance, and ultra-low 30 mA max supply at full speed-making it optimal for compact, high-bandwidth isolated control loops where channel count and dynamic power management are critical.
Availability
SI8450AA-B-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 and long-term lifecycle support.
Supply support for SI8450AA-B-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 for wireless, automotive, and industrial markets.
The Si84xx family was designed specifically for high-reliability, low-power digital isolation in harsh electromagnetic environments-targeting motor drives, renewable energy inverters, and isolated data acquisition systems.
FAQ
What is the maximum operating temperature for SI8450AA-B-IS1 at 150 Mbps?
The SI8450AA-B-IS1 operates from –40 °C to +125 °C ambient temperature at full 150 Mbps data rate with 15 pF load and 5 V supply. Thermal derating applies above 125 °C case temperature per DIN EN 60747-5-2, with safety limiting values decreasing linearly to zero at 150 °C.
Does SI8450AA-B-IS1 support independent voltage domains on each side?
Yes, SI8450AA-B-IS1 supports fully independent VDD1 and VDD2 supplies ranging from 2.70 V to 5.5 V each. This allows interfacing 3.3 V microcontrollers to 5 V gate drivers or isolated ADCs without external level shifters, preserving signal integrity across the isolation barrier.
What safety certifications apply to SI8450AA-B-IS1?
SI8450AA-B-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. These cover reinforced insulation up to 560 VPEAK working voltage and production-tested 3000 VRMS for 1 second per unit.
How does the enable function operate on SI8450AA-B-IS1?
SI8450AA-B-IS1 has two independent enable inputs: EN1 controls outputs OUT1–OUT3 (primary side), and EN2 controls OUT4–OUT5 (secondary side). When asserted high, outputs drive normally; when low, they enter high-impedance state within ≤9.2 ns, enabling safe fault shutdown in motor control systems.
What is the minimum pulse width supported by SI8450AA-B-IS1 at 150 Mbps?
SI8450AA-B-IS1 supports a minimum pulse width of 6.0 ns at 150 Mbps operation, verified under 5 V supply and –40 to +125 °C conditions. This enables reliable transmission of narrow timing pulses used in high-resolution encoder interpolation and digital PWM edge detection.
SI8450AA-B-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:
- 5/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1000Vrms
- 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
SI8450AA-B-IS1 FAQ
1.How can I place an order for SI8450AA-B-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8450AA-B-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 SI8450AA-B-IS1 reliable?
The price and inventory of SI8450AA-B-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8450AA-B-IS1 is usually 5 days.
3.What payment methods are accepted for SI8450AA-B-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8450AA-B-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8450AA-B-IS1?
SI8450AA-B-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8450AA-B-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 SI8450AA-B-IS1?
For technical support, including SI8450AA-B-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8450AA-B-IS1 requirements.
6.How does Aetrix verify that SI8450AA-B-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8450AA-B-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 SI8450AA-B-IS1 meets industry standards.
7.What is the process for return or replacement of SI8450AA-B-IS1?
All SI8450AA-B-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8450AA-B-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 SI8450AA-B-IS1 part is unused and in its original packaging.
Return procedure for SI8450AA-B-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8450AA-B-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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