Analog Devices Inc. ADUM3400TRWZ-EP

Overview

ADUM3400TRWZ-EP from Analog Devices is a quad-channel, reinforced digital isolator using iCoupler® transformer-based technology for high-noise industrial and aerospace systems. It delivers 10 Mbps data rate, 25 kV/µs common-mode transient immunity, and operates across 3.135 V–5.5 V supply rails on both sides - enabling voltage translation between 3.3 V and 5 V domains in SPI or RS-485 isolation applications.

For engineers reviewing the ADUM3400TRWZ-EP datasheet, ADUM3400TRWZ-EP pinout, ADUM3400TRWZ-EP application, or ADUM3400TRWZ-EP equivalent, this enhanced product supports defense-grade reliability with −55°C to +125°C operation, UL 2500 Vrms and VDE-reinforced insulation (VIORM = 560 Vpeak), and system-level ESD robustness per IEC 61000-4-x.

Technical Context

The ADUM3400TRWZ-EP implements four unidirectional, input-to-output isolated channels with patented refresh circuitry ensuring DC-correct output during power-up, power-down, or static input conditions. Its monolithic air-core transformer architecture eliminates LED aging and timing drift inherent in optocouplers.

It supports mixed-voltage operation (3.3 V/5 V or 5 V/3.3 V), provides tristate-compatible enable inputs (VE1/VE2), and features low dynamic supply current (0.10–0.20 mA/Mbps on input side) optimized for power-constrained embedded systems requiring long-term reliability under extreme thermal and ESD stress.

Key Specifications

Pinout & Package

ADUM3400TRWZ-EP uses a 16-lead SOIC wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance ≥7.8 mm for reinforced insulation compliance. Input-side pins (1–8) and output-side pins (9–16) are physically segregated to maintain isolation barrier integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM3401TRWZ-EP and ISO6741-Q1, ADUM3400TRWZ-EP uniquely combines unidirectional 10 Mbps throughput, 25 kV/µs CMTI, −55°C to +125°C operation, and system-level IEC 61000-4-x validation - making it the only option qualified for high-reliability, high-noise aerospace and defense subsystems requiring guaranteed DC correctness and reinforced insulation.

Availability

ADUM3400TRWZ-EP is available at Aetrix Electronics and suitable for aerospace avionics, industrial motor drives, and high-voltage energy metering requiring stable component supply across extended temperature and regulatory compliance lifecycles.

Supply support for ADUM3400TRWZ-EP 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and defense markets since 1965.

The ADuM3400-EP series belongs to Analog Devices' iCoupler® enhanced product line, designed specifically for mission-critical applications demanding extended temperature operation, controlled manufacturing baselines, and system-level ESD resilience in defense and aerospace environments.

FAQ

What is the maximum data rate supported by ADUM3400TRWZ-EP?

ADUM3400TRWZ-EP supports a maximum data rate of 10 Mbps under standard test conditions (CL = 15 pF, CMOS signal levels). This rating applies across its full operating temperature range (−55°C to +125°C) and supply voltage range (3.135 V to 5.5 V per side), making it suitable for high-speed SPI, RS-422, and digital control interfaces in harsh environments where timing margin is critical.

Does ADUM3400TRWZ-EP support mixed-voltage operation between 3.3 V and 5 V domains?

Yes, ADUM3400TRWZ-EP fully supports mixed-voltage operation: it can operate with VDD1 = 3.3 V and VDD2 = 5 V, or vice versa. Input thresholds and output drive strengths are specified for both configurations, enabling seamless voltage translation without external level shifters - a key advantage in heterogeneous system designs integrating legacy 5 V and modern 3.3 V logic.

What safety certifications does ADUM3400TRWZ-EP hold?

ADUM3400TRWZ-EP holds UL recognition (2500 V rms, 1 minute), CSA Component Acceptance Notice 5A, and VDE certification to DIN V VDE V 0884-10:2006-12 for reinforced insulation (VIORM = 560 V peak). These approvals validate its suitability for safety-critical applications including industrial machinery, medical auxiliary circuits, and aerospace subsystems requiring certified galvanic isolation.

How does the refresh feature in ADUM3400TRWZ-EP improve system reliability?

The patented refresh feature in ADUM3400TRWZ-EP continuously monitors static input states and retransmits DC logic levels across the isolation barrier - ensuring correct output values during power-up, power-down, or prolonged absence of input transitions. This eliminates the need for external reset supervision or watchdog timers in safety-critical systems where output indeterminacy is unacceptable.

What is the common-mode transient immunity (CMTI) specification for ADUM3400TRWZ-EP?

ADUM3400TRWZ-EP guarantees >25 kV/µs common-mode transient immunity for both logic-high and logic-low output conditions, tested per VDD1/VDD2 = 1000 V with 800 V transient magnitude. This high CMTI rating ensures reliable operation in noisy environments such as variable-frequency drives, HV battery monitoring, and switch-mode power supplies where rapid ground potential shifts occur.