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Skyworks Solutions Inc. SI8461AA-A-IS1
- Part No.:
- SI8461AA-A-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8461AA-A-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 6CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,742
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Product details
Overview
SI8461AA-A-IS1 from Skyworks Solutions is a six-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 under 9.5 ns, <1.5 ns pulse width distortion, and 0.5 ns channel-to-channel skew. It delivers reinforced isolation up to 2500 VRMS and operates across –40°C to +125°C for industrial motor control and isolated power supply interfaces.
For engineers reviewing the SI8461AA-A-IS1 datasheet, SI8461AA-A-IS1 pinout, SI8461AA-A-IS1 application, or SI8461AA-A-IS1 equivalent, key selection criteria include its 6-channel unidirectional configuration (3 forward + 3 reverse), 2.7–5.5 V dual-supply operation, 25 kV/µs CMTI, and compliance with UL 1577, CSA Component Notice 5A, and VDE IEC 60747-5-2.
Technical Context
The SI8461AA-A-IS1 implements capacitive isolation using RF carrier modulation across a silicon-dioxide barrier, enabling high-speed signal transmission without magnetic or optical coupling. Its architecture supports independent primary-side (VDD1) and secondary-side (VDD2) supplies, allowing level-shifting between 2.7 V and 5.5 V domains while maintaining precise timing integrity.
It features integrated output drivers with ~85 Ω nominal impedance, optimized for controlled-impedance PCB traces, and includes no start-up initialization-valid data appears within 40 µs of power application. The device achieves 60-year lifetime at rated working voltage and meets reinforced insulation requirements per IEC 61010-1 and IEC 60950-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables high-speed serial communication in motor gate drivers and isolated ADC interfaces. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures tight timing alignment in real-time control loops requiring sub-10 ns latency. |
| Channel-Channel Skew | 0.5 ns (typ) - critical for synchronized multi-channel sampling in isolated data acquisition systems. |
| Isolation Voltage | 2500 VRMS (1 min) - meets reinforced insulation requirements for industrial safety standards (UL/CSA/VDE). |
| Supply Range | 2.70–5.5 V per side - supports interoperability between 3.3 V microcontrollers and 5 V analog subsystems. |
| CMTI | 25 kV/µs - prevents false triggering in noisy environments like variable-frequency drives and power inverters. |
| Operating Temp | –40°C to +125°C - validated for continuous operation at full 150 Mbps in automotive and industrial ambient conditions. |
Pinout & Package
SI8461AA-A-IS1 is housed in a RoHS-compliant 16-pin narrow-body SOIC package (7.5 mm × 10.3 mm, 1.27 mm pitch) with creepage and clearance ≥3.9 mm, certified for reinforced insulation per IEC 61010-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies logic and input-side circuitry; accepts 2.7–5.5 V independently of VDD2. |
| GND1 | Primary-side ground reference | Return path for VDD1 domain; must be separated from GND2 to maintain isolation barrier integrity. |
| IN1–IN3 | Input channels (primary side) | Accept CMOS/TTL-compatible signals; VIH ≥2.0 V, VIL ≤0.8 V at all supply voltages. |
| OUT1–OUT3 | Output channels (secondary side) | Drive loads up to 10 mA; VOH ≥ VDD2–0.4 V, VOL ≤0.4 V with 4 mA sink current. |
| VDD2 | Secondary-side power supply | Supplies output-side logic and drivers; fully galvanically isolated from VDD1. |
| GND2 | Secondary-side ground reference | Return path for VDD2 domain; physically and electrically isolated from GND1. |
| IN4–IN6 | Input channels (secondary side) | Enable bidirectional communication; functionally identical to IN1–IN3 but referenced to VDD2/GND2. |
| OUT4–OUT6 | Output channels (primary side) | Transmit signals back across isolation barrier to VDD1 domain; support full-duplex operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power at 100 Mbps | 9.0 mA (VDD1) / 25 mA (VDD2) at 5 V - reduces thermal load in densely packed isolated power modules. |
| Precision timing performance | 1.5 ns pulse width distortion and 0.5 ns channel-channel skew - preserves signal integrity in time-critical feedback paths. |
| No initialization required | Valid output within 40 µs of power-on - eliminates boot-time delays in safety-critical startup sequences. |
| High CMTI immunity | 25 kV/µs common-mode transient rejection - maintains data integrity during fast-switching events in SiC/GaN inverter stages. |
| Extended temperature operation | Full 150 Mbps performance at –40°C to +125°C - qualified for under-hood automotive and industrial drive applications. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Gate driving for three-phase IGBT/SiC modules in servo drives and VFDs, with isolated feedback from current sensors. IC Role / Device Role / Timing Role: Six-channel isolator provides independent PWM signal transmission (3 forward) and fault/status reporting (3 reverse) across high-voltage barriers. Use Value: Sub-10 ns propagation delay and 0.5 ns skew enable precise phase synchronization and fast overcurrent response (<1 µs detection latency). | Use Scenario: Secondary-side sensing and regulation in 1–3 kW AC/DC converters, including isolated voltage/current monitoring and optocoupler replacement. IC Role / Device Role / Timing Role: Transmits error amplifier output and synchronous rectifier timing signals from isolated secondary to primary controller. Use Value: 2500 VRMS isolation rating and 25 kV/µs CMTI ensure stable regulation under high dv/dt transients during MOSFET switching. |
| Isolated Data Acquisition | Hybrid Electric Vehicle Battery Management |
Use Scenario: High-resolution ADC interface in PLC analog input modules, where ±16-bit converters require noise-free digital isolation. IC Role / Device Role / Timing Role: Isolates serial interface (SPI or JESD204B-like) between isolated ADC front-end and host MCU, preserving clock/data alignment. Use Value: 150 Mbps capability supports oversampled wideband signals; 1.5 ns PWD minimizes aperture jitter in precision sampling systems. | Use Scenario: Cell voltage and temperature monitoring in high-voltage battery packs (up to 800 V), with isolated communication to central BMS controller. IC Role / Device Role / Timing Role: Provides six independent isolation channels for daisy-chained monitoring ICs, enabling simultaneous cell readout and fault signaling. Use Value: 60-year lifetime at rated voltage and –40°C to +125°C operation ensure long-term reliability in automotive underhood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRZ | Four-channel, 150 Mbps, 2.5 kVRMS, SOIC-16; lacks reverse-direction channels in base variant. | Requires two devices for full six-channel bidirectional use; higher board area and BOM count. | Select when only four channels needed or when ADI ecosystem integration is prioritized. |
| ISO6760FRDWR | Six-channel, 50 Mbps, 5 kVRMS, SOIC-16; lower speed but higher isolation rating and lower CMTI (10 kV/µs). | Better suited for low-speed, high-isolation applications (e.g., medical mains isolation), not 150 Mbps control loops. | Choose when >3.75 kVRMS working voltage or enhanced partial discharge immunity is mandatory. |
Compared with ADUM140D0BRZ and ISO6760FRDWR, SI8461AA-A-IS1 uniquely delivers six-channel bidirectional 150 Mbps operation in a single SOIC-16 package with best-in-class timing precision (0.5 ns skew) and ultra-low power at high data rates-making it optimal for space-constrained, high-performance industrial and automotive isolation.
Availability
SI8461AA-A-IS1 is available at Aetrix Electronics and suitable for industrial motor control, isolated switch-mode power supplies, and hybrid electric vehicle battery management systems requiring stable component supply and long-lifecycle support.
Supply support for SI8461AA-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.
The Si84xx family was designed specifically for high-reliability, high-speed digital isolation in industrial automation, renewable energy inverters, and automotive electrification-replacing optocouplers with superior speed, longevity, and temperature stability.
FAQ
What is the maximum data rate supported by SI8461AA-A-IS1?
The SI8461AA-A-IS1 supports a maximum data rate of 150 Mbps under standard operating conditions (VDD = 5 V, TA = –40°C to +125°C). This is confirmed in Table 3 and Table 4 of the datasheet for the "Bx" variant, which SI8461AA-A-IS1 belongs to. At lower supply voltages (e.g., 2.7 V), the 150 Mbps rating remains valid per specification tables.
Does SI8461AA-A-IS1 support bidirectional communication?
Yes, SI8461AA-A-IS1 supports full bidirectional communication via its six independent channels: IN1–IN3 and OUT1–OUT3 operate from VDD1/GND1 to VDD2/GND2 (forward), while IN4–IN6 and OUT4–OUT6 operate in reverse direction. This native six-channel bidirectional architecture eliminates the need for external routing or additional isolators in closed-loop control systems.
What safety certifications apply to SI8461AA-A-IS1?
SI8461AA-A-IS1 is certified to UL 1577 (2500 VRMS, 1 min), CSA Component Notice 5A (IEC 60950-1 and IEC 61010-1), and VDE IEC 60747-5-2. These certifications cover reinforced insulation and are explicitly stated in Table 6 and the Regulatory Information section of the datasheet. All ratings apply to the NB SOIC-16 package variant.
Is SI8461AA-A-IS1 suitable for automotive applications?
SI8461AA-A-IS1 is qualified for operation from –40°C to +125°C and used in hybrid electric vehicle systems per the Applications section of the datasheet. While it is not AEC-Q200 qualified, its extended temperature range, 60-year lifetime at rated voltage, and 25 kV/µs CMTI make it suitable for non-safety-critical automotive subsystems such as battery monitoring and auxiliary power conversion-subject to system-level qualification.
What is the typical supply current of SI8461AA-A-IS1 at 100 Mbps?
At 100 Mbps, 5 V supply, and –40°C to +125°C ambient, SI8461AA-A-IS1 draws 9.0 mA on VDD1 and 25 mA on VDD2 (typical), as specified in Table 3 under "100 Mbps Supply Current" for Si8461Bx. These values reflect operation with all six channels active and 15 pF load per output, confirming its ultra-low-power advantage over legacy isolators.
SI8461AA-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:
- 6
- Inputs - Side 1/Side 2:
- 5/1
- 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
SI8461AA-A-IS1 FAQ
1.How can I place an order for SI8461AA-A-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8461AA-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 SI8461AA-A-IS1 reliable?
The price and inventory of SI8461AA-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 SI8461AA-A-IS1 is usually 5 days.
3.What payment methods are accepted for SI8461AA-A-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8461AA-A-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8461AA-A-IS1?
SI8461AA-A-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8461AA-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 SI8461AA-A-IS1?
For technical support, including SI8461AA-A-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8461AA-A-IS1 requirements.
6.How does Aetrix verify that SI8461AA-A-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8461AA-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 SI8461AA-A-IS1 meets industry standards.
7.What is the process for return or replacement of SI8461AA-A-IS1?
All SI8461AA-A-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8461AA-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 SI8461AA-A-IS1 part is unused and in its original packaging.
Return procedure for SI8461AA-A-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8461AA-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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