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Skyworks Solutions Inc. SI8442BA-D-IS1
- Part No.:
- SI8442BA-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8442BA-D-IS1.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,868
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Product details
Overview
SI8442BA-D-IS1 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 of 9.5 ns. It operates from 2.70–5.5 V on both sides, delivers <11.8 mA per side at 100 Mbps (5 V), and targets high-noise industrial motor control and isolated power supply feedback loops.
For engineers reviewing the SI8442BA-D-IS1 datasheet, SI8442BA-D-IS1 pinout, SI8442BA-D-IS1 application, or SI8442BA-D-IS1 equivalent, key selection criteria include its 150 Mbps capability, 0.5 ns typical channel-to-channel skew, 25 kV/µs CMTI, and SOIC-16 wide-body package with 8.0 mm creepage - critical for IEC 61800-5-1 and UL 61800-5-1 compliant drives.
Technical Context
The SI8442BA-D-IS1 implements capacitive isolation with differential RF signaling across an internal SiO₂ barrier, enabling high-speed operation without magnetic coupling or optoelectronic degradation. Its dual-die architecture separates input and output domains, each with independent 2.70–5.5 V supply rails and integrated enable control.
It features precise timing performance: 1.5 ns typical pulse width distortion, 2 ns propagation delay skew, and 6 ns minimum pulse width - all specified over –40 to +125 °C at 150 Mbps. The device includes built-in ESD protection (±4 kV HBM) and meets AEC-Q100 Grade 1 requirements for automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - supports high-resolution encoder interfaces and fast SPI bus isolation in servo drives. |
| Propagation Delay | 3.0–9.5 ns - enables sub-10 ns timing-critical signal transfer between MCU and gate drivers. |
| Channel-Channel Skew | 0.5–1.8 ns - ensures tight synchronization across four isolated channels for multi-phase PWM control. |
| CMTI | 25 kV/µs - maintains signal integrity during fast-switching events in 650 V IGBT inverters. |
| Isolation Voltage | 2500 VRMS (1 min) - certified for reinforced insulation per UL 1577, CSA Component Notice 5A, and VDE IEC 60747-5-2. |
| Supply Range | 2.70–5.5 V on both VDD1 and VDD2 - allows direct interfacing with 3.3 V logic and 5 V microcontrollers without level shifters. |
| Power Consumption | 11.8 mA per side at 100 Mbps (5 V) - reduces thermal load in densely packed industrial PLC modules. |
Pinout & Package
SI8442BA-D-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage and clearance, meeting reinforced insulation requirements for 600 VRMS working voltage per IEC 61800-5-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies input-side logic and isolation transmitter; must be decoupled with 0.1 µF capacitor near pin. |
| GND1 | Primary-side ground reference | Return path for VDD1; requires low-impedance connection to primary PCB ground plane. |
| IN1–IN4 | Digital input signals (primary side) | Accept CMOS/TTL levels; VIH ≥ 2.0 V, VIL ≤ 0.8 V - compatible with 3.3 V and 5 V controllers. |
| EN1 | Primary-side enable input | Active-high control: drives outputs low when disabled; enables fast system-level power gating. |
| VDD2 | Secondary-side power supply | Supplies output-side logic and isolation receiver; independent of VDD1 for galvanic separation. |
| GND2 | Secondary-side ground reference | Isolated return for VDD2; must not be connected to GND1 except via functional isolation barrier. |
| OUT1–OUT4 | Isolated digital outputs (secondary side) | CMOS-compatible outputs with VOH ≥ VDD2–0.4 V and VOL ≤ 0.4 V - drive standard logic loads directly. |
| EN2 | Secondary-side enable input | Independent enable for secondary outputs; allows asymmetric enable control across isolation boundary. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel capacitive isolation | Four independent bidirectional channels in single WB-SOIC-16 package - reduces board space vs. discrete optocouplers or dual isolators. |
| 150 Mbps data rate | Supports real-time closed-loop control in servo amplifiers using high-speed SPI or parallel encoder interfaces. |
| 0.5 ns typical channel-to-channel skew | Enables simultaneous sampling of multiple current/voltage sensors in three-phase motor control without timing compensation. |
| 25 kV/µs common-mode transient immunity | Prevents false triggering during IGBT switching transients in 1200 V SiC-based inverters. |
| AEC-Q100 Grade 1 qualification | Validated for operation from –40 to +125 °C - suitable for under-hood automotive traction inverter auxiliary circuits. |
Applications
| Industrial Motor Drives | Isolated Power Supply Feedback |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and 3-phase IGBT/SiC gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Quad-channel isolator providing independent, low-skew paths for three PWM outputs plus one fault return line. Use Value: 0.5 ns channel-to-channel skew ensures synchronized gate switching; 25 kV/µs CMTI prevents noise-induced shoot-through during hard switching. |
Use Scenario: Transmitting error amplifier output from secondary-side TL431 circuit to primary-side PWM controller in isolated DC-DC converters. IC Role / Device Role / Timing Role: High-precision analog feedback isolator replacing optocoupler-based compensation loops. Use Value: 9.5 ns max propagation delay enables faster loop response than optocouplers (typically >1 µs); 2.7–5.5 V dual supply simplifies bias design. |
| Programmable Logic Controllers | Automotive Onboard Chargers |
Use Scenario: Isolating digital I/O lines (DI/DO) and serial communication (RS-485, CAN) in modular PLC backplanes. IC Role / Device Role / Timing Role: General-purpose quad isolator handling mixed-voltage logic levels and high-noise fieldbus environments. Use Value: Dual 2.7–5.5 V supplies allow interfacing with 3.3 V FPGA I/O and 5 V relay drivers; 8.0 mm creepage meets IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Isolating AC sensing, DC link monitoring, and interlock signals between high-voltage battery domain and 12 V control domain in OBC systems. IC Role / Device Role / Timing Role: Safety-critical isolator for HV monitoring and fault reporting in ISO 15118-compliant charging systems. Use Value: UL/VDE/CSA triple certification supports functional safety compliance; AEC-Q100 Grade 1 rating validates reliability over vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2402BRWZ | 5000 VRMS isolation, 25 Mbps max data rate, 100 ns propagation delay, SOIC-16 wide body | Lower speed and higher latency - suitable for slower control loops but insufficient for 150 Mbps encoder interfaces | Select when higher isolation voltage is required and data rate ≤25 Mbps; verify layout compatibility with different pinout. |
| ISO6742QDWR | 5000 VRMS isolation, 50 Mbps max data rate, 11 ns propagation delay, SOIC-16 wide body | Lower CMTI (100 kV/µs), no AEC-Q100 qualification, wider supply range (1.71–5.5 V) | Choose for cost-sensitive industrial applications where 50 Mbps suffices and automotive qualification is unnecessary. |
Compared with ADUM2402BRWZ and ISO6742QDWR, SI8442BA-D-IS1 offers the highest data rate (150 Mbps) and lowest propagation delay (9.5 ns max) in a certified wide-body SOIC package - making it optimal for time-critical motor control and high-fidelity feedback systems requiring tight skew and robust noise immunity.
Availability
SI8442BA-D-IS1 is available at Aetrix Electronics and suitable for industrial motor drives, isolated switch-mode power supplies, and automotive onboard chargers requiring stable component supply and long-term lifecycle support.
Supply support for SI8442BA-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 specifically for high-reliability industrial and automotive isolation applications demanding low power, high speed, and regulatory-certified reinforced insulation - targeting motor control, power conversion, and EV subsystems.
FAQ
What is the maximum operating temperature for SI8442BA-D-IS1?
The SI8442BA-D-IS1 is rated for continuous operation from –40 °C to +125 °C at full 150 Mbps data rate and 5 V supply. This specification is validated across both VDD1 and VDD2 rails and applies to the wide-body SOIC package under 15 pF load conditions per channel, as confirmed in Table 1 of the official Skyworks datasheet Rev. 1.7.
Does SI8442BA-D-IS1 support independent enable control on both sides?
Yes, SI8442BA-D-IS1 provides two dedicated enable inputs: EN1 controls the primary-side input receivers, and EN2 controls the secondary-side output drivers. When either is low, the corresponding side enters high-impedance or low-output state per datasheet Figure 1, enabling flexible power sequencing and fault containment across the isolation barrier.
What safety certifications apply to SI8442BA-D-IS1?
SI8442BA-D-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (reinforced insulation). These approvals cover the 2.5 kVRMS isolation rating and are production-tested to 3.0 kVRMS for 1 second, as documented in Skyworks' Rev. 1.7 datasheet Section "Regulatory Information".
Can SI8442BA-D-IS1 operate with mismatched supply voltages on VDD1 and VDD2?
Yes, SI8442BA-D-IS1 supports independent 2.70–5.5 V supplies on VDD1 and VDD2. For example, it can interface a 3.3 V FPGA (VDD1) with a 5 V microcontroller (VDD2) without external level shifters - verified in Tables 3–5 of the datasheet across all operating conditions including 100 Mbps data rate and –40 to +125 °C.
What is the minimum pulse width supported by SI8442BA-D-IS1 at 150 Mbps?
At 150 Mbps operation, SI8442BA-D-IS1 supports a minimum pulse width of 6.0 ns, as specified in the "Si844xBx" row of Table 3's Timing Characteristics section. This value is guaranteed over temperature and supply voltage variations and enables reliable detection of narrow pulses in high-frequency gate driver fault signaling.
SI8442BA-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:
- 2/2
- 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
SI8442BA-D-IS1 FAQ
1.How can I place an order for SI8442BA-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8442BA-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 SI8442BA-D-IS1 reliable?
The price and inventory of SI8442BA-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 SI8442BA-D-IS1 is usually 5 days.
3.What payment methods are accepted for SI8442BA-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8442BA-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8442BA-D-IS1?
SI8442BA-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8442BA-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 SI8442BA-D-IS1?
For technical support, including SI8442BA-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8442BA-D-IS1 requirements.
6.How does Aetrix verify that SI8442BA-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8442BA-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 SI8442BA-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8442BA-D-IS1?
All SI8442BA-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8442BA-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 SI8442BA-D-IS1 part is unused and in its original packaging.
Return procedure for SI8442BA-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8442BA-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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