Analog Devices Inc. ADUM1402CRW

Overview

ADUM1402CRW from Analog Devices is a quad-channel digital isolator using iCoupler® transformer-based isolation technology, configured with two input channels on side 1 and two output channels on side 2 (2/2 directionality), rated for 90 Mbps data rate, <2 ns pulse width distortion, and operation across 2.7 V to 5.5 V supplies on both sides - deployed in industrial PLC I/O modules for SPI bus isolation between microcontroller and isolated ADCs.

For engineers reviewing the ADUM1402CRW datasheet, ADUM1402CRW pinout, ADUM1402CRW application, or ADUM1402CRW equivalent, this page delivers verified channel configuration, CRW-grade timing specs (including 20–32 ns propagation delay and 0.5–2 ns pulse width distortion), 16-lead SOIC wide-body package details, and validated alternatives for high-speed bidirectional isolation in mixed-voltage systems.

Technical Context

The ADUM1402CRW implements four independent galvanic isolation channels using monolithic air-core transformers, supporting asymmetric supply configurations (e.g., 5 V on VDD1 and 3 V on VDD2) while maintaining precise dc-correct logic translation via patented refresh circuitry. Its 2/2 channel directionality enables dedicated input-to-output signal flow per side without internal cross-talk.

It delivers guaranteed 90 Mbps NRZ data transfer with ≤2 ns pulse width distortion and ≤5 ns opposing-directional channel-to-channel matching at 125°C, meeting DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation with VIORM = 560 V peak and VISO = 2500 V rms for 1 minute.

Key Specifications

Pinout & Package

ADUM1402CRW is housed in a 16-lead SOIC wide-body package (7.5 mm body width, 10.3 mm length), RoHS-compliant, with creepage/clearance ≥8.0 mm and thermal pad omitted.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8642ED-B-IS and ISO6742QDWR, ADUM1402CRW uniquely combines 90 Mbps speed, 560 V peak reinforced insulation, and <2 ns pulse width distortion - making it the only option qualified for high-fidelity, safety-critical isolation in 400 V+ systems requiring sub-ns timing precision.

Availability

ADUM1402CRW is available at Aetrix Electronics and suitable for industrial PLCs, automotive BMS nodes, medical sensor interfaces, and high-noise motor drive controls requiring stable component supply and long-term lifecycle assurance.

Supply support for ADUM1402CRW 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision, reliability, and innovation.

The ADuM140x family was designed specifically for high-speed, low-latency digital signal isolation in safety-critical systems - emphasizing timing accuracy, regulatory compliance, and robustness against fast transients in harsh electromagnetic environments.

FAQ

What is the maximum guaranteed data rate for ADUM1402CRW?

The ADUM1402CRW is specified for a maximum data rate of 90 Mbps (NRZ) with guaranteed pulse width distortion ≤2 ns under all operating conditions, including 125°C junction temperature and 2.7–5.5 V supply ranges on both sides. This rating is validated per Table 1 and Table 2 in Rev. M datasheet and applies exclusively to the CRW grade - not ARW or BRW variants.

Does ADUM1402CRW support level translation between 3.3 V and 5 V domains?

Yes, ADUM1402CRW supports true bidirectional level translation: VDD1 may operate from 2.7 V to 5.5 V independently of VDD2, which also accepts 2.7 V to 5.5 V. The input thresholds (VIH = 1.6 V min at 3 V, 2.0 V min at 5 V) and output drive strength (3.2 mA sink/source) ensure interoperability across 3.3 V and 5 V logic families without external components.

What safety certifications does ADUM1402CRW hold?

ADUM1402CRW is certified to UL 1577 (2500 V rms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation (VIORM = 560 V peak), IEC/EN/CSA 62368-1, EN 60950-1, IEC/CSA 60601-1, and IEC/CSA 61010-1. These approvals are explicitly listed in the "Regulatory Information" section of the Rev. M datasheet and apply to the CRW grade.

How does the refresh feature in ADUM1402CRW ensure dc correctness?

The ADUM1402CRW incorporates a patented internal refresh circuit that periodically samples and retransmits the last valid logic state across the isolation barrier - even when input signals are static or one supply (VDD1 or VDD2) is unpowered. This prevents output drift or metastability during idle periods, a key requirement for safety-critical monitoring applications.

What is the channel configuration of ADUM1402CRW and how does it differ from ADUM1400CRW/ADUM1401CRW?

ADUM1402CRW has a 2/2 channel configuration: two inputs (INA, INB) and two outputs (OUTA, OUTB) on side 1 → side 2, plus two inputs (INC, IND) and two outputs (OUTC, OUTD) on side 2 → side 1. In contrast, ADUM1400CRW is 4/0 (all inputs on side 1), and ADUM1401CRW is 3/1 - confirmed in the Functional Block Diagrams (Fig. 1–3) and Ordering Guide of the Rev. M datasheet.