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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM3482BRSZ-RL7

Name: ADUM3482BRSZ-RL7
Brand: Analog Devices Inc.
SKU: ADUM3482BRSZ-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM3482BRSZ-RL7

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

Package:: 20-SSOP (0.209", 5.30mm Width)

Datasheet:: ADUM3482BRSZ-RL7.pdf

Description:: DGTL ISO 3750VRMS 4CH GP 20SSOP

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Product details

Overview

ADUM3482BRSZ-RL7 from Analog Devices is a quad-channel digital isolator using iCoupler® transformer-based technology, providing 3.75 kV_RMS reinforced isolation between two independent circuits. It supports up to 25 Mbps NRZ data rate, features 25 ns typical propagation delay, operates across 1.8 V to 5.5 V I/O and 3.0 V to 5.5 V core supplies, and delivers high common-mode transient immunity (>25 kV/µs). It is used in isolated SPI interfaces for industrial PLCs and motor drives.

For engineers reviewing the ADUM3482BRSZ-RL7 datasheet, ADUM3482BRSZ-RL7 pinout, ADUM3482BRSZ-RL7 application, or ADUM3482BRSZ-RL7 equivalent, this page provides verified functional specifications, side-specific supply architecture, default-output control logic, safety-certified insulation parameters, and real-world isolation use cases aligned with IEC 62368-1 and VDE 0884-17.

Technical Context

The ADUM3482BRSZ-RL7 implements four unidirectional isolation channels with asymmetric configuration: Side 1 has two inputs (VIA, VIB) and two outputs (VOC, VOD); Side 2 has two inputs (VID, VIC) and two outputs (VOA, VOB). Each side includes dedicated I/O supply (VDDLx) and core supply (VDDx), enabling level translation between 1.8 V logic and 3–5.5 V domains.

It integrates internal regulators (VDDCx pins) for isolated power delivery to each side's output circuitry, supports configurable output default states via CTRL1/CTRL2 pins, and meets reinforced insulation requirements per DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 V_PEAK and VISO = 3750 V_RMS.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 25 Mbps NRZ - enables high-speed SPI clock/data isolation without timing bottlenecks.
Propagation Delay	25 ns typical - ensures tight timing alignment in feedback loops and synchronous serial interfaces.
Isolation Rating	3750 V_RMS for 1 minute - certified reinforced barrier suitable for industrial mains-connected systems.
Common-Mode Immunity	>25 kV/µs - maintains signal integrity in noisy motor drive or power converter environments.
Supply Range	VDDLx: 1.8–5.5 V; VDDx: 3.0–5.5 V - allows mixed-voltage system interfacing (e.g., 1.8 V MCU ↔ 5 V ADC).
Operating Temperature	−40°C to +125°C - supports deployment in under-hood automotive or factory-floor industrial settings.
Regulatory Approvals	UL 1577, IEC/EN/CSA 62368-1, DIN EN IEC 60747-17 - meets global safety standards for end-equipment certification.

Pinout & Package

ADUM3482BRSZ-RL7 uses a 20-lead, RoHS-compliant SSOP package (7.2 mm × 5.3 mm, 0.65 mm pitch) with creepage/clearance ≥5.3 mm and internal gap ≥18 µm.

Pin/Terminal	Circuit Role	Design Meaning
1, 20	VDDL1 / VDDL2	I/O supply for Side 1 / Side 2 input/output circuits - sets logic threshold (VIH/VIL = 0.7/0.3×VDDLx) and enables 1.8 V compatibility.
2, 10, 11, 19	GND1 / GND2	Isolated ground references - must be routed on separate PCB planes; Pins 2/10 and 11/19 are internally shorted.
3, 4, 15, 16	VIA, VIB, VID, VIC	Logic inputs - Side 1 inputs A/B; Side 2 inputs D/C - accept CMOS levels referenced to respective VDDLx.
5, 6, 17, 18	VOC, VOD, VOB, VOA	Logic outputs - Side 1 outputs C/D; Side 2 outputs B/A - drive loads up to ±4 mA at VOH/VOL specs.
7, 14	CTRL1 / CTRL2	Output default select - low = output low on power-up/fault; high = output high - critical for fail-safe system states.
8, 13	VDD1 / VDD2	Core supply for Side 1 / Side 2 - powers internal transformers and logic; must be ≥3.0 V for operation.
9, 12	VDDC1 / VDDC2	Regulator outputs - provide isolated 3.0–5.5 V for output drivers; bypass required; not for external load use.

Key Features

Feature	Design Value
Asymmetric channel mapping	Side 1: 2-in/2-out (A,B→C,D); Side 2: 2-in/2-out (D,C→B,A) - matches bidirectional SPI bus layout with minimal routing.
Independent I/O and core supplies	VDDLx (1.8–5.5 V) decoupled from VDDx (3.0–5.5 V) - enables level-shifting between low-voltage controllers and higher-voltage peripherals.
Configurable power-on output state	CTRL1/CTRL2 pins set default output level (high/low) - eliminates undefined states during startup or fault conditions.
Low dynamic power consumption	IDDI(D) = 0.070 mA/Mbps; IDDOL(D) = 0.0077 mA/Mbps at 1.8 V - reduces thermal load in space-constrained isolated modules.
High-temperature reliability	Rated for continuous operation at +125°C ambient - validated for use in industrial inverters and EV battery management systems.

Applications

SPI Isolation in Motor Drives	Isolated Data Acquisition
Use Scenario: Isolating SPI communication between a 3.3 V microcontroller and a 5 V isolated ADC in a servo drive control board. IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 provides galvanic separation for SCLK, MOSI, MISO, and CS signals while maintaining 25 Mbps timing integrity. Use Value: Prevents ground loop noise from corrupting position feedback data and enables safe operation at 125°C junction temperature.	Use Scenario: Connecting a 1.8 V FPGA to multiple isolated sensor front-ends in a modular test equipment rack. IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 bridges voltage domains and routes four independent data streams across the isolation barrier. Use Value: Eliminates need for external level shifters; 1.8 V I/O compatibility reduces FPGA I/O bank complexity and power.
Industrial Fieldbus Node Isolation	PLC Digital I/O Module
Use Scenario: Isolating RS-485 transceiver control lines (TXEN, DE, RE) and status signals in a PROFIBUS DP slave node. IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 isolates bidirectional control logic while preserving fast edge rates needed for 12 Mbps bus timing. Use Value: Meets IEC 61000-4-5 surge immunity requirements via 10 kV_PEAK surge isolation rating and >25 kV/µs CMTI.	Use Scenario: Providing channel-by-channel isolation for 24 V DC digital input signals feeding into a 3.3 V logic controller in a programmable logic controller. IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 acts as input-side isolator with CTRL1-configured default-low outputs for safe de-energized state. Use Value: Ensures fail-safe behavior during power loss or controller reset; supports 125°C ambient operation in cabinet-mounted designs.

SPI Isolation in Motor Drives

Isolated Data Acquisition

Use Scenario: Isolating SPI communication between a 3.3 V microcontroller and a 5 V isolated ADC in a servo drive control board.

IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 provides galvanic separation for SCLK, MOSI, MISO, and CS signals while maintaining 25 Mbps timing integrity.

Use Value: Prevents ground loop noise from corrupting position feedback data and enables safe operation at 125°C junction temperature.

Use Scenario: Connecting a 1.8 V FPGA to multiple isolated sensor front-ends in a modular test equipment rack.

IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 bridges voltage domains and routes four independent data streams across the isolation barrier.

Use Value: Eliminates need for external level shifters; 1.8 V I/O compatibility reduces FPGA I/O bank complexity and power.

Industrial Fieldbus Node Isolation

PLC Digital I/O Module

Use Scenario: Isolating RS-485 transceiver control lines (TXEN, DE, RE) and status signals in a PROFIBUS DP slave node.

IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 isolates bidirectional control logic while preserving fast edge rates needed for 12 Mbps bus timing.

Use Value: Meets IEC 61000-4-5 surge immunity requirements via 10 kV_PEAK surge isolation rating and >25 kV/µs CMTI.

Use Scenario: Providing channel-by-channel isolation for 24 V DC digital input signals feeding into a 3.3 V logic controller in a programmable logic controller.

IC Role / Device Role / Timing Role: ADUM3482BRSZ-RL7 acts as input-side isolator with CTRL1-configured default-low outputs for safe de-energized state.

Use Value: Ensures fail-safe behavior during power loss or controller reset; supports 125°C ambient operation in cabinet-mounted designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM3481BRSZ-RL7	Channel configuration: Side 1 = 3-in/1-out; Side 2 = 1-in/3-out - differs from ADUM3482BRSZ-RL7's 2-in/2-out per side.	Better suited for asymmetric protocols like UART+GPIO; less optimal for balanced SPI where equal input/output count is required.	Select ADUM3481BRSZ-RL7 only when channel directionality mismatch is acceptable and pin-compatible layout reuse is prioritized.
SI8642ED-B-IS	Capacitive isolation; 5000 V_RMS rating; 150 Mbps max data rate; no integrated regulators - requires external isolated power.	Higher speed but lacks built-in level translation and regulator outputs; needs additional DC-DC or charge pump for isolated VDD.	Choose SI8642ED-B-IS when bandwidth >25 Mbps is mandatory and external isolated power is already available on board.

Compared with ADUM3482BRSZ-RL7, ADUM3481BRSZ-RL7 offers different channel directionality but identical package and safety ratings, while SI8642ED-B-IS trades integrated regulation and 1.8 V I/O support for higher speed and higher isolation voltage - requiring redesign of power architecture.

Availability

ADUM3482BRSZ-RL7 is available at Aetrix Electronics and suitable for industrial automation, motor control, and isolated data acquisition systems requiring stable component supply, long-term lifecycle assurance, and compliance with IEC 62368-1 and VDE 0884-17.

Supply support for ADUM3482BRSZ-RL7 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial, and communications markets.

The ADuM348x family was designed specifically for robust, low-power, multi-channel digital isolation in harsh industrial environments - emphasizing safety certification, wide supply flexibility, and fail-safe default logic states.

FAQ

What is the maximum data rate supported by ADUM3482BRSZ-RL7?

ADUM3482BRSZ-RL7 supports up to 25 Mbps non-return-to-zero (NRZ) data rate, verified across all operating voltages (1.8 V, 3 V, and 5 V I/O) and temperatures (−40°C to +125°C). This rating applies to each of its four isolated channels independently and is specified with CL = 15 pF loading and CMOS-level signals.

Does ADUM3482BRSZ-RL7 require external isolated power supplies?

No. ADUM3482BRSZ-RL7 integrates internal regulators (VDDC1 and VDDC2 pins) that generate isolated 3.0–5.5 V supplies for output driver circuits. Only primary-side VDD1/VDDL1 and secondary-side VDD2/VDDL2 must be provided externally - eliminating need for discrete isolated DC-DC converters in many designs.

How does the CTRL1 and CTRL2 pin function on ADUM3482BRSZ-RL7?

CTRL1 sets the default output state (high or low) for Side 1 outputs (VOC, VOD) during power-up or fault conditions; CTRL2 performs the same for Side 2 outputs (VOA, VOB). Pulling CTRLx low configures default-low; pulling high configures default-high - ensuring predictable logic states without software initialization.

What safety certifications apply to ADUM3482BRSZ-RL7?

ADUM3482BRSZ-RL7 is certified to UL 1577 (3750 V_RMS, 1 min), IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and DIN EN IEC 60747-17 (VDE 0884-17) with reinforced insulation rating (VIORM = 560 V_PEAK). The * marking on the package confirms VDE 0884-17 compliance.

Can ADUM3482BRSZ-RL7 interface directly with 1.8 V logic devices?

Yes. ADUM3482BRSZ-RL7 accepts 1.8 V CMOS inputs (VIH = 1.26 V, VIL = 0.54 V) and drives 1.8 V logic loads (VOH ≥ 1.6 V at −2 mA, VOL ≤ 0.4 V at 2 mA) when VDDLx = 1.8 V. Its dual-supply architecture allows independent 1.8 V I/O and 3–5.5 V core operation without level shifters.

ADUM3482BRSZ-RL7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: iCoupler®

Package/Case:: 20-SSOP (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Magnetic Coupling

Type:: General Purpose

Isolated Power:: No

Number of Channels:: 4

Inputs - Side 1/Side 2:: 2/2

Channel Type:: Unidirectional

Voltage - Isolation:: 3750Vrms

Common Mode Transient Immunity (Min):: 25kV/µs

Data Rate:: 25Mbps

Propagation Delay tpLH / tpHL (Max):: 33ns, 33ns

Pulse Width Distortion (Max):: 3ns

Rise / Fall Time (Typ):: 2.5ns, 2.5ns

Voltage - Supply:: 1.8V ~ 5.5V, 3V ~ 5.5V

Grade:: -

Qualification:: -

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SSOP

ADUM3482BRSZ-RL7 FAQ

1.How can I place an order for ADUM3482BRSZ-RL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM3482BRSZ-RL7 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 ADUM3482BRSZ-RL7 reliable?

The price and inventory of ADUM3482BRSZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3482BRSZ-RL7 is usually 5 days.

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ADUM3482BRSZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM3482BRSZ-RL7 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 ADUM3482BRSZ-RL7?

For technical support, including ADUM3482BRSZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3482BRSZ-RL7 requirements.

6.How does Aetrix verify that ADUM3482BRSZ-RL7 is sourced from the original manufacturer or authorized distributors?

All ADUM3482BRSZ-RL7 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 ADUM3482BRSZ-RL7 meets industry standards.

7.What is the process for return or replacement of ADUM3482BRSZ-RL7?

All ADUM3482BRSZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3482BRSZ-RL7, 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 ADUM3482BRSZ-RL7 part is unused and in its original packaging.

Return procedure for ADUM3482BRSZ-RL7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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