Skyworks Solutions Inc. SI8622EB-AS

Overview

SI8622EB-AS from Skyworks Solutions is a dual-channel, reinforced-isolation digital isolator in WB SOIC-16 package, delivering 5 kVRMS isolation, <10 ns propagation delay, and 150 Mbps data rate with fail-safe default-low output configuration. It operates across –40 to 125 °C and supports 2.5–5.5 V dual supplies for industrial motor control and battery management systems.

For engineers reviewing the SI8622EB-AS datasheet, SI8622EB-AS pinout, SI8622EB-AS application, or SI8622EB-AS equivalent, this page provides verified timing specs, isolation barrier performance, fail-safe behavior under undervoltage, and side-specific supply current at 1/10/100 Mbps - all critical for high-noise, safety-certified designs.

Technical Context

The SI8622EB-AS implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-channel architecture features independent UVLO monitors per side (VDD1/VDD2), with hysteresis of 50–95 mV and thresholds at 1.88–2.375 V.

It uses Schmitt-trigger inputs (VT+ = 1.4–1.9 V, VT– = 1.0–1.4 V) and delivers precise timing: 0.4–2.5 ns channel-channel skew, 2–5 ns propagation delay skew, and 350 ps peak eye jitter. CMTI exceeds 50 kV/µs under 1500 V common-mode transients.

Key Specifications

Pinout & Package

SI8622EB-AS is housed in a wide-body SOIC-16 (WB SOIC-16) package with 8.0 mm creepage/clearance, supporting reinforced insulation up to 5 kVRMS. Pin assignments are validated per Skyworks datasheet Rev. 206328B, Section 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel digital isolator applications.

Compared with ADUM220N0BRZ and ISO6721FDWR, SI8622EB-AS uniquely combines 5 kVRMS reinforced certification, 150 Mbps bandwidth, and factory-set default-low fail-safe behavior - making it optimal for high-reliability, high-speed automotive and industrial isolation where timing integrity and safe-state assurance are mandatory.

Availability

SI8622EB-AS is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, onboard EV chargers, and isolated data acquisition requiring stable component supply across extended temperature and safety-critical operating conditions.

Supply support for SI8622EB-AS 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 Si86xx family was engineered specifically for high-reliability isolation in electric vehicle powertrains, industrial automation, and medical systems - emphasizing low power, precise timing, and reinforced safety certification from the silicon level.

FAQ

What is the isolation rating and safety certification status of SI8622EB-AS?

SI8622EB-AS provides 5 kVRMS reinforced isolation and is certified to UL 1577 (5000 VRMS, 1 min), VDE 0884-10 (reinforced), IEC 62368-1, and GB4943.1. These approvals validate its use in safety-critical applications such as traction inverters and medical isolation barriers where double insulation is mandated.

Does SI8622EB-AS require external components for stable operation?

Yes - SI8622EB-AS requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2, placed within 2 mm of the respective pins. No pull-up/pull-down resistors are needed, as internal fail-safe circuitry sets default-low output states without external biasing.

How does the fail-safe mode behave during power loss on the input side?

When VDD1 drops below 1.88 V (UVLO– threshold), SI8622EB-AS forces both B1 and B2 outputs to logic low within 40 µs. This behavior is factory-programmed and irreversible - ensuring predictable shutdown in motor gate drivers and contactor controls during primary-side supply faults.

What is the maximum data rate supported by SI8622EB-AS, and how is signal integrity maintained?

SI8622EB-AS supports up to 150 Mbps with <5 ns minimum pulse width and 350 ps peak eye diagram jitter. Signal integrity is preserved via RF modulation architecture, 50 Ω matched output impedance, and ≥50 kV/µs CMTI - enabling clean eye diagrams even in 100+ V/ns switching environments.

Can SI8622EB-AS operate with mismatched supply voltages on Side 1 and Side 2?

Yes - SI8622EB-AS supports independent 2.5–5.5 V supplies on VDD1 and VDD2. For example, it can interface a 3.3 V MCU (VDD1 = 3.3 V) with a 5 V isolated ADC (VDD2 = 5 V), with full timing specification compliance and no level-shifting circuitry required.