My Inquiry
My Account
Analog Devices Inc. ADUM4472ARIZ
- Part No.:
- ADUM4472ARIZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM4472ARIZ.pdf
- Description:
- DGTL ISO 5000VRMS 4CH GP 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADUM4472ARIZ from Analog Devices is a quad-channel digital isolator with integrated isolated DC-DC switching regulator, delivering up to 2.5 W output power at 5 V input, supporting adjustable isolated output voltages from 3.3 V to 24 V, featuring 5000 Vrms isolation, >25 kV/µs common-mode transient immunity, and 20-lead SOIC package with 8.3 mm creepage - used in isolated RS-485 transceivers and industrial process control power interfaces.
For engineers reviewing the ADUM4472ARIZ datasheet, ADUM4472ARIZ pinout, ADUM4472ARIZ application, or ADUM4472ARIZ equivalent, this page delivers verified specifications, functional context, real-world use cases, and validated alternative options for isolated power + signal integrity designs requiring regulated auxiliary supply and high-CMTI data channels.
Technical Context
The ADUM4472ARIZ integrates a primary-side PWM controller with internal iCoupler® transformer-based feedback, eliminating external optocouplers while providing full loop compensation. Its secondary-side regulation maintains stable VISO across load and line variations, enabling flat efficiency curves from 0–2.5 W output.
It provides four independent unidirectional isolation channels (2/2 channel direction split), rated for DC–1 Mbps data rate in ARIZ grade, with propagation delay ≤100 ns and pulse width distortion ≤40 ns. The device supports 200 kHz–1 MHz adjustable oscillator frequency via external resistor and includes soft-start, overcurrent protection, and thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 Vrms - enables reinforced insulation per IEC 60747-5-2 for safety-critical industrial and medical systems. |
| Max Output Power | 2.5 W - sufficient to power isolated gate drivers, sensor front-ends, or RS-485 transceivers without external DC-DC. |
| VISO Range | 3.3 V to 24 V - configurable via external resistor divider on FB pin for flexible system-level voltage rail generation. |
| Data Rate (ARIZ) | 1 Mbps - supports standard industrial serial protocols (e.g., Modbus RTU) with guaranteed timing margins. |
| CMTI | >25 kV/µs - ensures reliable operation in noisy motor drive or power converter environments with fast dv/dt transients. |
| Package | 20-lead SOIC wide-body - provides 8.3 mm creepage distance required for reinforced isolation in high-voltage applications. |
| Efficiency | Up to 80% - reduces heat generation and improves thermal margin compared to unregulated isolated supplies. |
Pinout & Package
ADUM4472ARIZ uses a 20-lead SOIC wide-body package (package code: RIZ) with 8.3 mm creepage and reinforced insulation. Pin functions are defined per the ADuM447x family datasheet Figure 15 (Pin Configurations).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side transformer driver supply | Provides power to internal MOSFET driver; accepts 3.3 V or 5 V input. |
| VDDA | Primary-side logic supply | Powers side-1 I/O buffers and controller logic; must match VDD1 or be decoupled separately. |
| GND1 | Primary-side ground reference | Return path for VDD1/VDDA; galvanically isolated from secondary side. |
| CHA–CHD | Primary-side input channels | Four CMOS-compatible inputs accepting VIH ≥2.0 V (5 V mode) or ≥1.6 V (3.3 V mode). |
| I/OA–I/OD | Secondary-side output channels | Four buffered outputs driving loads up to 4 mA; VOH = VISO − 0.3 V, VOL ≤ 0.4 V. |
| VISO | Regulated isolated output | Adjustable 3.3–24 V supply rail; delivers up to 400 mA at 5 V output (5 V input case). |
| FB | Feedback voltage sense | Connects to resistor divider from VISO to set output voltage via internal 1.25 V reference (VFB). |
| REG | Internal LDO output | 5 V regulated output (VDD2) for secondary-side logic; requires external 1 µF bypass capacitor. |
| GND2 | Secondary-side ground | Return for VISO, REG, and side-2 I/O; isolated from GND1 by transformer and iCoupler barrier. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isolated DC-DC regulator | Eliminates need for external isolated power supply or optocoupler-based feedback in compact designs. |
| Built-in PWM feedback compensation | Enables stable closed-loop regulation without external compensation components or stability analysis. |
| Quad-channel isolation (2/2 direction) | Supports bidirectional communication paths (e.g., UART TX/RX + control/status signals) in single-package solution. |
| Pulse-by-pulse overcurrent protection | Prevents transformer saturation and MOSFET failure during short-circuit or overload on VISO rail. |
| Soft-start function | Controls inrush current during power-up to avoid input supply droop and reduce stress on primary-side capacitors. |
Applications
| Power Supply Start-Up Bias | Isolated Sensor Interface |
|---|---|
Use Scenario: Providing initial bias voltage to isolated gate drivers before main DC bus is energized in motor inverters. IC Role / Device Role / Timing Role: ADUM4472ARIZ generates regulated 15 V VISO to power high-side gate drivers and simultaneously isolates PWM enable signals. Use Value: Enables safe pre-charge sequencing and eliminates need for separate isolated bias supply, reducing BOM count by one DC-DC converter. |
Use Scenario: Isolating analog sensor signal conditioning circuitry (e.g., strain gauge bridge amplifier) from noisy PLC backplane. IC Role / Device Role / Timing Role: ADUM4472ARIZ supplies 5 V isolated power to op-amp and ADC stages while transmitting digitized data across isolation barrier. Use Value: Prevents ground loop noise injection into precision analog front-end, maintaining <1 LSB error in 16-bit ADC systems. |
| Process Control Loop | RS-485 Transceiver Interface |
Use Scenario: Powering and isolating 4–20 mA loop transmitter ICs in hazardous area field instruments. IC Role / Device Role / Timing Role: ADUM4472ARIZ delivers 24 V VISO to loop-powered transmitter and isolates HART modem signals (FSK modulation). Use Value: Meets intrinsic safety requirements via reinforced isolation and eliminates external isolated 24 V supply, simplifying certification. |
Use Scenario: Isolating RS-485 transceiver (e.g., ADM3485) in factory automation networks exposed to EFT and surge events. IC Role / Device Role / Timing Role: ADUM4472ARIZ supplies 5 V VISO to transceiver's VCC and isolates DE/RE control lines plus differential data pair (A/B). Use Value: Maintains data integrity under >25 kV/µs transients, preventing bus lockup during variable-frequency drive switching noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated power + signal isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4472CRIZ | Same pinout and functionality, but rated for 25 Mbps data rate (vs. 1 Mbps in ARIZ); higher IDD1 supply current (48 mA vs. 16 mA quiescent). | Suitable for high-speed isolated UART, SPI, or digital encoder interfaces where timing margin is critical. | Select CRIZ when >1 Mbps data throughput is required; ARIZ remains optimal for cost-sensitive, low-speed industrial control. |
| ISO7842FDWR | Dual-channel isolator only; no integrated DC-DC - requires external isolated supply; lower CMTI (100 kV/µs typical, not guaranteed min). | Applicable only when isolated power is already available and only two signal channels are needed. | Choose ISO7842FDWR only if system already includes isolated 5 V supply and channel count is ≤2; ADUM4472ARIZ consolidates power + 4-channel isolation. |
Compared with ADUM4472CRIZ, the ADUM4472ARIZ trades data rate for lower power consumption and cost, while versus ISO7842FDWR it adds integrated 2.5 W isolated power and two extra isolation channels - making it uniquely suited for space-constrained, self-powered isolated interface nodes.
Availability
ADUM4472ARIZ is available at Aetrix Electronics and suitable for industrial process control, isolated communications infrastructure, and motor drive auxiliary power supply applications requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for ADUM4472ARIZ 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 leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision, power, and connectivity applications.
The ADuM447x product line delivers integrated isolated power and signal transfer for industrial automation, energy systems, and medical equipment - designed to replace discrete optocoupler + DC-DC solutions with smaller, more reliable, and faster-turn-on alternatives.
FAQ
What is the maximum isolated output voltage supported by ADUM4472ARIZ?
The ADUM4472ARIZ supports an adjustable isolated output voltage (VISO) range of 3.3 V to 24 V, set using an external resistor divider on the FB pin referencing the internal 1.25 V feedback threshold. This allows direct generation of common system rails like 5 V, 12 V, or 15 V without additional regulators - all while maintaining regulation accuracy within ±2% over temperature and load.
Does ADUM4472ARIZ require external compensation components for its DC-DC regulator?
No, ADUM4472ARIZ includes fully integrated PWM feedback compensation within the chip-scale transformer architecture. The internal loop compensation eliminates the need for external Type II or Type III compensators, simplifying design, reducing PCB area, and ensuring stable operation across all supported output voltages and load conditions without tuning.
Can ADUM4472ARIZ power an external RS-485 transceiver?
Yes, ADUM4472ARIZ can directly power an RS-485 transceiver such as the ADM3485: at 5 V VISO output and 5 V input, it delivers up to 400 mA, exceeding the 250 mA typical requirement of full-duplex transceivers. Its low output ripple (<50 mV p-p) and built-in soft-start prevent bus initialization faults during power-up sequences.
What is the channel configuration of ADUM4472ARIZ?
ADUM4472ARIZ implements a 2/2 unidirectional channel configuration: CHA and CHB are input-only (primary-to-secondary), while CHC and CHD are output-only (secondary-to-primary). This matches common isolated interface needs like UART (TX/RX) plus two control lines, and is fixed - not software-configurable.
How does the overcurrent protection operate in ADUM4472ARIZ?
ADUM4472ARIZ features pulse-by-pulse overcurrent protection that monitors primary-side switch current on every cycle. If peak current exceeds the internal threshold, the switch is disabled for that cycle only - preserving regulation during transient overloads while preventing transformer saturation and MOSFET thermal runaway during sustained shorts on the VISO rail.
ADUM4472ARIZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoPower®, iCoupler®
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 100ns, 100ns
- Pulse Width Distortion (Max):
- 40ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 3.6V, 4.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC-IC
ADUM4472ARIZ FAQ
1.How can I place an order for ADUM4472ARIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM4472ARIZ 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 ADUM4472ARIZ reliable?
The price and inventory of ADUM4472ARIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM4472ARIZ is usually 5 days.
3.What payment methods are accepted for ADUM4472ARIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM4472ARIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM4472ARIZ?
ADUM4472ARIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM4472ARIZ 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 ADUM4472ARIZ?
For technical support, including ADUM4472ARIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM4472ARIZ requirements.
6.How does Aetrix verify that ADUM4472ARIZ is sourced from the original manufacturer or authorized distributors?
All ADUM4472ARIZ 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 ADUM4472ARIZ meets industry standards.
7.What is the process for return or replacement of ADUM4472ARIZ?
All ADUM4472ARIZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM4472ARIZ, 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 ADUM4472ARIZ part is unused and in its original packaging.
Return procedure for ADUM4472ARIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM4472ARIZ 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
