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Skyworks Solutions Inc. SI8440BA-D-IS1
- Part No.:
- SI8440BA-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8440BA-D-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,024
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Product details
Overview
SI8440BA-D-IS1 from Skyworks Solutions is a quad-channel digital isolator with reinforced isolation rated at 2500 VRMS, supporting up to 150 Mbps data rate and worst-case propagation delay under 9.5 ns. It operates across 2.70–5.5 V supply rails 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-IS1 datasheet, SI8440BA-D-IS1 pinout, SI8440BA-D-IS1 application, or SI8440BA-D-IS1 equivalent, this page provides verified timing specs, safety certifications (UL, CSA, VDE), package mapping to SOIC-16 wide-body, and real-world design implications for isolation barrier integrity, CMTI immunity (25 kV/µs), and channel-to-channel skew (≤1.8 ns).
Technical Context
The SI8440BA-D-IS1 implements capacitive isolation with on-chip RF modulation/demodulation circuitry, enabling DC-to-150 Mbps signal transmission without start-up initialization. Its dual-supply architecture supports independent VDD1/VDD2 rails (2.70–5.5 V), and internal enable logic controls output tri-state behavior with 5–8 ns enable-to-data timing.
It achieves precise timing via matched channel paths: typical pulse width distortion is 1.5 ns, channel-channel skew is ≤1.8 ns, and propagation delay skew between units is ≤3.0 ns. Safety compliance includes UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE 0884-2 (IEC 60747-5-2) with 560 VPEAK working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - supports high-speed serial links in motor drives and isolated communications. |
| Propagation Delay | 3.0–9.5 ns - enables sub-10 ns timing-critical feedback loops in power inverters. |
| Channel-Channel Skew | ≤1.8 ns - ensures synchronized sampling across four isolated channels in multi-channel ADC systems. |
| CMTI | 25 kV/µs - maintains signal integrity during fast-switching transients in SiC/GaN-based power stages. |
| Isolation Voltage | 2500 VRMS - meets reinforced insulation requirements for industrial mains-connected equipment. |
| Supply Range | 2.70–5.5 V on both sides - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends. |
| Power @ 100 Mbps | <3.8 mA per channel at 5 V - reduces thermal load in densely packed isolated gate driver PCBs. |
Pinout & Package
SI8440BA-D-IS1 is housed in a 16-pin wide-body SOIC package (package code IS1), with creepage/clearance of 8.0 mm and reinforced insulation certified to UL, CSA, and VDE standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, Pin 1 | Primary-side supply | Power input for input-side logic and isolation transmitter; must be decoupled with 0.1 µF capacitor. |
| GND1, Pin 2 | Primary-side ground | Reference return for input-side signals; requires low-inductance connection to VDD1 bypass cap. |
| EN1, Pin 3 | Input-side enable | Active-high control: drives outputs low when deasserted; enables power-gating of input side. |
| IN1–IN4, Pins 4–7 | Digital input channels | Accept CMOS-level signals (VIH ≥2.0 V, VIL ≤0.8 V); no external pull-ups required. |
| VDD2, Pin 10 | Secondary-side supply | Independent power rail for output-side logic and receiver; supports level-shifting applications. |
| GND2, Pin 11 | Secondary-side ground | Isolated reference for output-side signals; must be separated from GND1 by ≥8 mm clearance. |
| EN2, Pin 12 | Secondary-side enable | Controls output tri-state; assertion delays data valid by 5–8 ns (ten1) and tri-state by 7–9.2 ns (ten2). |
| OUT1–OUT4, Pins 13–16 | Digital output channels | CMOS-compatible outputs (VOH ≥VDD2–0.4 V, VOL ≤0.4 V); 85 Ω nominal output impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent bidirectional signal paths in one SOIC-16 package, reducing BOM count vs. discrete optocouplers. |
| No start-up initialization | Valid data appears within 15–40 µs of power application (tSU), eliminating boot-time uncertainty in safety-critical systems. |
| Ultra-low power at speed | Draws only 3.6–5.4 mA per side at 100 Mbps/5 V, enabling thermally constrained designs in sealed enclosures. |
| High CMTI immunity | 25 kV/µs common-mode transient rejection prevents false triggering during IGBT/SiC switching noise events. |
| AEC-Q100 qualified | Qualified for automotive-grade temperature operation (–40 to 125 °C), supporting hybrid electric vehicle traction inverter designs. |
Applications
| Industrial Motor Control | Isolated ADC Interface |
|---|---|
Use Scenario: Gate driving and current sensing feedback in 3-phase PMSM inverters with SiC MOSFETs. IC Role / Device Role / Timing Role: Isolates PWM signals from MCU to gate drivers while transmitting analog current-sense data across barrier. Use Value: 1.8 ns channel skew enables synchronized sampling of three phase currents; 25 kV/µs CMTI prevents corruption during 100 V/ns switching edges. | Use Scenario: Connecting precision delta-sigma ADCs (e.g., AD7403) to isolated microcontrollers in energy metering. IC Role / Device Role / Timing Role: Transfers high-resolution serial bitstream across isolation barrier with minimal jitter addition. Use Value: 9.5 ns max propagation delay and 1.5 ns pulse width distortion preserve 16-bit timing accuracy in oversampled ADC streams. |
| Hybrid Electric Vehicle Inverter | Isolated Switch-Mode Power Supply |
Use Scenario: Signal isolation in traction inverter control boards requiring AEC-Q100 compliance and 125 °C ambient operation. IC Role / Device Role / Timing Role: Isolates fault reporting, temperature monitoring, and enable signals between high-voltage and low-voltage domains. Use Value: 60-year lifetime at rated voltage and –40 to 125 °C operation ensure reliability over vehicle service life. | Use Scenario: Feedback loop isolation in 1–3 kW LLC resonant converters with digital controllers. IC Role / Device Role / Timing Role: Transmits error amplifier output or PWM sync signals across primary-secondary barrier. Use Value: 150 Mbps capability supports high-frequency digital control loops (>1 MHz switching), reducing latency vs. optocouplers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16 narrow-body; higher 5.5 mA/channel power at 100 Mbps. | Same data rate and isolation rating but narrower creepage (4.01 mm); not certified for 600 VRMS working voltage per CSA. | Prefer for space-constrained layouts where 4.9 mm creepage suffices and AEC-Q100 is not required. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide-body; lower speed but higher isolation rating and integrated LDO. | Supports 5 kVRMS systems (e.g., medical AC mains) but insufficient for 150 Mbps motor control loops. | Select when system-level isolation requirement exceeds 2.5 kVRMS and data rate ≤50 Mbps is acceptable. |
Compared with ADUM140D0BRIZ and ISO6741QDWR, SI8440BA-D-IS1 uniquely balances 150 Mbps speed, 2.5 kVRMS reinforced isolation, AEC-Q100 qualification, and 8.0 mm creepage-making it optimal for high-reliability industrial and automotive inverter control where timing precision and noise immunity are critical.
Availability
SI8440BA-D-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 SI8440BA-D-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 for high-reliability signal isolation in harsh electromagnetic environments-targeting industrial automation, automotive electrification, and energy infrastructure where legacy optocouplers fail to meet speed, power, or lifetime requirements.
FAQ
What is the maximum operating temperature for SI8440BA-D-IS1?
The SI8440BA-D-IS1 is rated for continuous operation from –40 °C to +125 °C at full 150 Mbps data rate and 5 V supply, validated across all process corners and voltage extremes per Table 1 of the datasheet. This range supports placement near power stages in motor drives and traction inverters without derating.
Does SI8440BA-D-IS1 require external pull-up or pull-down resistors on its input pins?
No, SI8440BA-D-IS1 does not require external pull-up or pull-down resistors on IN1–IN4 pins. Its input structure accepts standard CMOS logic levels (VIH ≥2.0 V, VIL ≤0.8 V) and exhibits ±10 µA leakage, making it compatible with direct MCU GPIO connections without additional biasing components.
What safety certifications apply to SI8440BA-D-IS1?
SI8440BA-D-IS1 holds UL 1577 recognition (2500 VRMS, 1 min), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE 0884-2 certification (IEC 60747-5-2). These cover reinforced insulation with 560 VPEAK working voltage and are fully documented in Tables 6 and 7 of the official Skyworks datasheet Rev. 1.7.
How does the enable function work on SI8440BA-D-IS1?
SI8440BA-D-IS1 features independent EN1 (input-side) and EN2 (output-side) pins. When EN1 is low, input receivers are disabled and outputs go low; when EN2 is low, outputs enter high-impedance state. Enable-to-data timing is 5–8 ns (ten1) and enable-to-tri-state is 7–9.2 ns (ten2), per Figure 1 and Table 3.
Is SI8440BA-D-IS1 pin-compatible with other Si844x variants?
Yes, SI8440BA-D-IS1 shares identical pinout and package (SOIC-16 wide-body) with all Si8440/41/42/45 family members, including SI8441BA-D-IS1 and SI8442BA-D-IS1. Channel count, directionality, and enable functionality are consistent; only data rate and internal configuration differ across variants.
SI8440BA-D-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:
- 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-IS1 FAQ
1.How can I place an order for SI8440BA-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8440BA-D-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 SI8440BA-D-IS1 reliable?
The price and inventory of SI8440BA-D-IS1 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-IS1 is usually 5 days.
3.What payment methods are accepted for SI8440BA-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8440BA-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8440BA-D-IS1?
SI8440BA-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8440BA-D-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 SI8440BA-D-IS1?
For technical support, including SI8440BA-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8440BA-D-IS1 requirements.
6.How does Aetrix verify that SI8440BA-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8440BA-D-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 SI8440BA-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8440BA-D-IS1?
All SI8440BA-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8440BA-D-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 SI8440BA-D-IS1 part is unused and in its original packaging.
Return procedure for SI8440BA-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8440BA-D-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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