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Skyworks Solutions Inc. SI8440BA-D-IS1R
- Part No.:
- SI8440BA-D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8440BA-D-IS1R.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,154
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Product details
Overview
SI8440BA-D-IS1R from Skyworks Solutions is a quad-channel digital isolator with reinforced 2500 VRMS isolation, supporting up to 150 Mbps data rate and worst-case propagation delay under 9.5 ns. It operates from 2.70–5.5 V supply on both sides, delivers ultra-low power consumption (e.g., <3.8 mA per channel at 100 Mbps/5 V), and targets high-noise industrial motor control and isolated ADC interfaces.
For engineers reviewing the SI8440BA-D-IS1R datasheet, SI8440BA-D-IS1R pinout, SI8440BA-D-IS1R application, or SI8440BA-D-IS1R equivalent, key selection criteria include its 16-pin wide-body SOIC package, AEC-Q100 qualification, 25 kV/µs CMTI, –40 to 125 °C operation at full speed, and precise timing specs including ≤1.8 ns channel-channel skew.
Technical Context
The SI8440BA-D-IS1R implements capacitive isolation with differential CMOS signaling across four independent channels, enabling bidirectional or unidirectional data transfer without start-up initialization. Its architecture supports simultaneous operation across dual supply domains (VDD1/VDD2) with independent voltage ranges and guarantees stable timing performance over temperature and voltage.
It features an enable input per side (EN1/EN2) controlling output tri-state behavior, with defined timing windows (e.g., 5–8 ns enable-to-data-valid), and integrates on-chip 85 Ω output impedance for controlled-impedance PCB routing. Safety certification covers UL 1577 (2500 VRMS), CSA 5A, and VDE IEC 60747-5-2 (560 VPEAK working voltage).
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 SPI interfaces. |
| Propagation Delay | 3.0–9.5 ns - ensures tight timing alignment in real-time control loops and feedback paths. |
| Channel-Channel Skew | ≤1.8 ns - critical for synchronized sampling across multiple isolated ADC channels. |
| CMTI | 25 kV/µs - sustains reliable operation in high-dV/dt environments like IGBT/SiC inverter switching nodes. |
| Supply Voltage Range | 2.70–5.5 V per side - supports interoperability with 3.3 V microcontrollers and 5 V legacy logic. |
| Isolation Rating | 2500 VRMS (1 min) - meets reinforced insulation requirements for industrial safety standards (IEC 61010-1, UL 1577). |
| Operating Temperature | –40 to 125 °C at 150 Mbps - validated for under-hood automotive and industrial drive applications. |
Pinout & Package
SI8440BA-D-IS1R is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage/clearance, optimized for high-voltage isolation integrity. Pin assignments follow standard Si8440Bx channel mapping with dual-side enable and independent VDD/GND pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Primary-side inputs (IN1–IN4) | Accept TTL/CMOS logic signals referenced to VDD1; VIH ≥2.0 V, VIL ≤0.8 V. |
| 5, 6, 7, 8 | Primary-side outputs (OUT1–OUT4) | Drive loads up to 4 mA with VOH ≥VDD1–0.4 V and VOL ≤0.4 V. |
| 9, 10, 11, 12 | Secondary-side outputs (OUT5–OUT8) | Isolated outputs referenced to VDD2; match primary-side timing specs with ≤1.8 ns skew. |
| 13, 14, 15, 16 | Secondary-side inputs (IN5–IN8) | Accept logic signals referenced to VDD2; support bidirectional signal flow when paired with EN2. |
| 1, 9 | VDD1 / VDD2 | Independent power supplies per side; each requires local 0.1 µF bypass capacitor. |
| 8, 16 | GND1 / GND2 | Separate ground references essential to maintain isolation barrier integrity. |
| EN1 (Pin 15) | Primary-side enable | Active-high control: drives OUT1–OUT4 low when disabled; 5–8 ns enable-to-valid delay. |
| EN2 (Pin 14) | Secondary-side enable | Active-high control: drives OUT5–OUT8 low when disabled; same timing as EN1. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent bidirectional channels in one WB-SOIC-16 package reduce board space vs. discrete optocouplers. |
| Ultra-low power at 100 Mbps | 3.8 mA per channel at 5 V - cuts thermal load in dense power-conversion PCB layouts. |
| Precision timing | ≤1.8 ns channel-channel skew and ≤2.5 ns pulse width distortion - preserves signal integrity in high-resolution encoder interfaces. |
| AEC-Q100 qualified | Grade 1 (–40 to 125 °C) qualification - validates reliability for automotive traction inverter subsystems. |
| No start-up initialization | Immediate data pass-through after power-on - eliminates boot-time delays in safety-critical control systems. |
Applications
| Industrial Motor Drives | Isolated ADC/DAC Interfaces |
|---|---|
Use Scenario: Gate driving for three-phase IGBT/SiC inverters with isolated current/voltage sensing. IC Role / Device Role / Timing Role: Isolates PWM signals from MCU while transmitting analog feedback across barrier with minimal latency. Use Value: 9.5 ns max propagation delay and 25 kV/µs CMTI prevent false triggering during fast switching transients. | Use Scenario: High-resolution position sensing using isolated sigma-delta modulators in servo systems. IC Role / Device Role / Timing Role: Transfers oversampled bitstream from isolated ADC to host processor with deterministic timing. Use Value: ≤1.8 ns channel-channel skew ensures synchronized sampling across multi-channel isolated ADCs. |
| Hybrid Electric Vehicle Onboard Chargers | Isolated Switch-Mode Power Supplies |
Use Scenario: Communication between primary-side controller and secondary-side monitoring in bidirectional OBCs. IC Role / Device Role / Timing Role: Carries fault signals, status flags, and telemetry across isolation barrier with AEC-Q100 reliability. Use Value: 125 °C operation and 60-year life at rated voltage ensure longevity in under-hood thermal environments. | Use Scenario: Feedback loop isolation in 1–3 kW telecom/server PSUs using digital PWM controllers. IC Role / Device Role / Timing Role: Transmits error amplifier output or current-sense data across barrier to regulate output voltage tightly. Use Value: 150 Mbps capability supports high-frequency digital control schemes (e.g., DCM PFC) without bandwidth bottleneck. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRWZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16 narrow body; higher 5.5 mA/channel @100 Mbps (5 V). | Limited to 105 °C max ambient; not AEC-Q100 qualified. | Prefer for cost-sensitive industrial designs where automotive qualification is unnecessary. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide body; lower power but halved data rate. | Qualified to AEC-Q100 Grade 0 (–40 to 150 °C); higher isolation rating suits medical/high-voltage systems. | Choose when >2.5 kVRMS isolation or extended temperature range outweighs speed requirement. |
Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8440BA-D-IS1R uniquely balances 150 Mbps speed, AEC-Q100 Grade 1 qualification, and 2500 VRMS isolation in a wide-body SOIC-making it optimal for automotive-grade motor control where timing precision and thermal robustness are non-negotiable.
Availability
SI8440BA-D-IS1R is available at Aetrix Electronics and suitable for industrial motor drives, hybrid electric vehicle onboard chargers, and isolated switch-mode power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8440BA-D-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 for wireless, automotive, and industrial markets.
The Si84xx family was designed to replace optocouplers with higher-speed, lower-power, and more reliable capacitive digital isolation for demanding real-time control systems.
FAQ
What is the maximum operating temperature for SI8440BA-D-IS1R at full 150 Mbps data rate?
The SI8440BA-D-IS1R is fully specified for operation from –40 to 125 °C at 150 Mbps, with all timing and electrical parameters guaranteed across this range. This makes SI8440BA-D-IS1R suitable for under-hood automotive applications and high-temperature industrial environments where thermal derating of speed is unacceptable.
Does SI8440BA-D-IS1R require external pull-up or pull-down resistors on its input pins?
No, SI8440BA-D-IS1R does not require external pull-up or pull-down resistors on its input pins. Its inputs have defined VIH (≥2.0 V) and VIL (≤0.8 V) thresholds and internal biasing sufficient for direct connection to CMOS/TTL logic. External resistors are only needed if system-level noise immunity or fail-safe default states are required beyond the device's native specifications.
How does the enable function operate on SI8440BA-D-IS1R?
SI8440BA-D-IS1R has two independent enable inputs: EN1 (Pin 15) controls primary-side outputs (OUT1–OUT4), and EN2 (Pin 14) controls secondary-side outputs (OUT5–OUT8). When asserted high, outputs reflect input states; when low, outputs go to logic low (not high-impedance). Enable-to-data-valid delay is 5–8 ns, enabling fast dynamic channel gating in real-time control systems.
What safety certifications apply to SI8440BA-D-IS1R?
SI8440BA-D-IS1R is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (560 VPEAK). These cover reinforced insulation for industrial and automotive applications. Certification applies specifically to the 2.5 kVRMS-rated wide-body SOIC variant, with production testing at 3.0 kVRMS for 1 second.
Can SI8440BA-D-IS1R operate with different supply voltages on each side?
Yes, SI8440BA-D-IS1R supports independent supply voltages on VDD1 and VDD2, each ranging from 2.70 V to 5.5 V. This allows interfacing between 3.3 V microcontrollers and 5 V analog front-ends or legacy logic, with full timing and isolation specifications maintained regardless of voltage combination - a key advantage over fixed-rail isolators.
SI8440BA-D-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:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- 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
SI8440BA-D-IS1R FAQ
1.How can I place an order for SI8440BA-D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8440BA-D-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 SI8440BA-D-IS1R reliable?
The price and inventory of SI8440BA-D-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8440BA-D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8440BA-D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8440BA-D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8440BA-D-IS1R?
SI8440BA-D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8440BA-D-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 SI8440BA-D-IS1R?
For technical support, including SI8440BA-D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8440BA-D-IS1R requirements.
6.How does Aetrix verify that SI8440BA-D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8440BA-D-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 SI8440BA-D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8440BA-D-IS1R?
All SI8440BA-D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8440BA-D-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 SI8440BA-D-IS1R part is unused and in its original packaging.
Return procedure for SI8440BA-D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8440BA-D-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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