My Inquiry
My Account
Analog Devices Inc. ADUM2285ARIZ
- Part No.:
- ADUM2285ARIZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM2285ARIZ.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:342
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADuM2285ARIZ from Analog Devices is a 5 kVRMS dual-channel digital isolator using iCoupler® transformer-based technology, providing bidirectional signal isolation with default-low output logic state. It supports data rates up to 100 Mbps, achieves ≤24 ns propagation delay, operates from 3.0 V to 5.5 V on both sides, and delivers >25 kV/μs common-mode transient immunity. It is used in RS-485 transceiver isolation within industrial motor drives requiring reinforced insulation and high noise immunity.
For engineers reviewing the ADuM2285ARIZ datasheet, ADuM2285ARIZ pinout, ADuM2285ARIZ application, or ADuM2285ARIZ equivalent, this page provides verified specifications, SOIC-16W package mapping, functional truth table behavior, safety certification details per VDE 0884-17 and UL 1577, and validated alternative options for dual-channel isolated communication interfaces.
Technical Context
The ADuM2285ARIZ implements two independent unidirectional isolation channels using monolithic air-core transformers, enabling galvanic separation between input (Side 1) and output (Side 2) domains. Its patented refresh circuit ensures DC-correct output states during static input conditions or power-up sequences, eliminating optocoupler-like drift or loss of level integrity.
It supports mixed-voltage operation-e.g., 5 V on Side 1 and 3 V on Side 2-with full logic-level translation, and features undervoltage lockout (UVLO) thresholds at 2.4 V (falling) and 2.6 V (rising) on both supplies. Channel-to-channel matching is specified at ≤5 ns (C grade), and pulse width distortion remains ≤2 ns under 100 Mbps operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5000 VRMS (1-minute withstand); enables reinforced insulation per IEC 60747-17 and UL 1577 for medical and industrial safety compliance. |
| Data Rate | Up to 100 Mbps (C grade); supports high-speed serial interfaces like isolated UART, SPI clock lines, or encoder feedback in servo drives. |
| Propagation Delay | ≤24 ns max (5 V operation); ensures tight timing alignment in real-time control loops with minimal latency penalty. |
| Common-Mode Immunity | >25 kV/μs; maintains signal integrity in noisy environments such as variable-frequency drives or PLC backplanes. |
| Default Output State | Low (VOA = L, VOB = L) when VDD1 is unpowered; prevents undefined bus states in fail-safe system initialization. |
| Supply Range | 3.0 V to 5.5 V on both sides; allows interoperability between legacy 5 V logic and modern low-power 3.3 V microcontrollers. |
| Package | 16-lead SOIC wide-body (7.6 mm creepage/clearance); meets IEC 60601-1 2-MOPP requirements for patient-connected medical equipment. |
Pinout & Package
ADuM2285ARIZ uses a 16-lead SOIC wide-body package (SOIC_W) with enhanced creepage distance (8.7 mm) and reinforced insulation structure. Pins 1–8 form the input-side domain (Side 1); pins 9–16 form the output-side domain (Side 2). Grounds are separated (GND1, GND2) to maintain isolation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, GND1 | Input-side ground reference | Return path for Side 1 logic inputs; must be routed separately from GND2 to preserve isolation barrier integrity. |
| 3, VDD1 | Input-side supply | Power source for internal input buffers and transformer driver; UVLO active between 2.4 V–2.6 V. |
| 4, VIA | Channel A input | CMOS-compatible logic input driving isolated channel A; accepts 3 V or 5 V levels regardless of VDD1 voltage. |
| 5, VIB | Channel B input | Independent CMOS input for second isolation channel; supports asynchronous or synchronized dual-signal transfer. |
| 9, 16, GND2 | Output-side ground reference | Return path for Side 2 logic outputs; electrically isolated from GND1; requires separate PCB plane or split ground design. |
| 12, VOB | Channel B output | CMOS output referenced to VDD2; defaults low if VDD1 is unpowered; sinks/sourcing ±10 mA max. |
| 13, VOA | Channel A output | CMOS output with identical drive strength and default-low behavior; matches VOB timing within ≤5 ns (C grade). |
| 14, VDD2 | Output-side supply | Power for output buffers and receiver circuitry; supports level translation-e.g., 5 V input → 3.3 V output. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced insulation rating | VIORM = 645 VPEAK per DIN EN IEC 60747-17 (VDE 0884-17); certified for 2-MOPP in IEC 60601-1 medical systems. |
| DC-correct refresh architecture | Automatic state refresh every 1.6 µs ensures output retains last valid logic level even during prolonged input inactivity. |
| Bidirectional voltage translation | Supports asymmetric supply configurations (e.g., VDD1 = 5 V, VDD2 = 3.3 V) without external level shifters or resistive dividers. |
| High-temp operation | Rated for continuous operation from −40°C to +125°C ambient; suitable for under-hood automotive or industrial power converter control. |
| Low dynamic power | 0.09 mA/Mbps (input side) and 0.02 mA/Mbps (output side) at 3 V; reduces thermal load in dense PCB layouts. |
Applications
| Industrial Motor Drives | Medical Patient Monitoring |
|---|---|
|
Use Scenario: Isolating encoder feedback and gate-drive enable signals in 3-phase inverter modules. IC Role / Device Role / Timing Role: Dual-channel isolator providing independent, low-latency separation of position sensing and PWM command paths. Use Value: Prevents ground-loop-induced current injection into sensitive analog front-ends while maintaining <5 ns channel skew for synchronized rotor control. |
Use Scenario: Galvanically isolating UART communication between ECG analog front-end ASIC and host MCU in bedside monitors. IC Role / Device Role / Timing Role: Reinforced-isolation barrier meeting 2-MOPP requirements per IEC 60601-1 for patient-connected devices. Use Value: Enables safe, low-jitter serial telemetry transmission across isolation boundary without compromising signal fidelity or regulatory compliance. |
| Programmable Logic Controllers | Isolated RS-485 Transceivers |
|
Use Scenario: Interfacing 24 V digital I/O modules to 3.3 V FPGA-based controller backplane in harsh factory environments. IC Role / Device Role / Timing Role: Level-translating isolator handling discrete input status and output command signals with fail-safe default-low assertion. Use Value: Eliminates need for discrete level shifters and optocouplers, reducing BOM count while delivering >25 kV/μs CMTI for EMC robustness. |
Use Scenario: Isolating DE/RE control and differential data lines in isolated RS-485 nodes for building automation networks. IC Role / Device Role / Timing Role: Dual-channel isolator separating transceiver direction control (DE/RE) from half-duplex data (RO/DI) paths. Use Value: Ensures simultaneous, skew-matched isolation of control and data signals-critical for reliable multi-drop bus arbitration and collision avoidance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADuM2281ARIZ | Pin-compatible but default-high output; identical timing, isolation, and supply specs. | Suitable where fail-safe logic requires asserted-high reset or enable during power-up. | Select ADuM2281ARIZ only if system architecture mandates default-high instead of default-low behavior on power loss. |
| SI8621ED-IS | Capacitive isolation; VIORM = 500 VPEAK (lower than ADuM2285ARIZ's 645 VPEAK); no refresh circuit. | Limited to basic insulation applications; not certified for 2-MOPP medical use or high-CMTI industrial drives. | Choose SI8621ED-IS only for cost-sensitive, non-safety-critical designs where 500 VPEAK rating suffices and DC correctness is managed externally. |
Compared with ADuM2285ARIZ, ADuM2281ARIZ offers identical performance except for power-on output polarity, while SI8621ED-IS trades lower isolation rating and missing refresh functionality for reduced unit cost-making it unsuitable for medical or high-noise industrial deployments requiring reinforced insulation and guaranteed DC correctness.
Availability
ADuM2285ARIZ is available at Aetrix Electronics and suitable for industrial motor drives, medical patient monitoring systems, programmable logic controllers, and isolated RS-485 transceiver designs requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.
Supply support for ADuM2285ARIZ 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 industrial, automotive, communications, and healthcare markets with precision technologies.
The ADuM2285ARIZ belongs to the iCoupler® digital isolator product line, engineered specifically for high-reliability, high-CMTI galvanic isolation in safety-critical systems where optocoupler alternatives fall short in speed, lifetime, or temperature stability.
FAQ
What is the default output state of ADuM2285ARIZ when power is applied only to VDD2?
When only VDD2 is powered and VDD1 is unpowered, the ADuM2285ARIZ outputs enter an indeterminate state until VDD1 is restored. Unlike its default-low behavior during normal operation, the absence of input-side power disables the refresh circuit, causing VOA and VOB to float or settle unpredictably. The ADuM2285ARIZ datasheet confirms this behavior in Table 24, noting that outputs return to valid logic within 1.6 µs after VDD1 power restoration.
Does ADuM2285ARIZ support mixed-voltage operation between 3.3 V and 5 V domains?
Yes, ADuM2285ARIZ fully supports mixed-voltage operation: it can accept 5 V logic inputs on Side 1 while driving 3.3 V CMOS outputs on Side 2, or vice versa. This is enabled by independent VDD1 and VDD2 supplies (3.0 V–5.5 V each) and internally regulated input threshold levels (VIH = 0.7×VDDx, VIL = 0.3×VDDx). The ADuM2285ARIZ electrical characteristics tables explicitly validate performance across 5 V/3 V, 3 V/5 V, and same-voltage configurations.
What safety certifications apply to ADuM2285ARIZ?
ADuM2285ARIZ carries UL 1577 (5000 VRMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation (VIORM = 645 VPEAK), IEC/CSA 62368-1, IEC/CSA 61010-1, IEC/CSA 60601-1 (2-MOPP), and CQC GB 4943.1. These approvals are documented in Table 14 of the ADuM2285ARIZ datasheet and confirmed via certificate numbers including 40011599 (VDE) and CQC15001129425.
How does the refresh feature in ADuM2285ARIZ ensure DC correctness?
The ADuM2285ARIZ incorporates a patented internal refresh circuit that samples and retransmits the last valid input state every 1.6 µs-even when input signals remain static. This prevents transformer saturation and output drift, guaranteeing that VOA and VOB retain their correct logic levels indefinitely without requiring toggling inputs. This behavior is distinct from optocouplers and is verified in the ADuM2285ARIZ truth table and Applications Information section.
What is the maximum continuous working voltage supported by ADuM2285ARIZ?
The ADuM2285ARIZ supports a maximum continuous working voltage of 645 VPEAK under bipolar AC waveform conditions, as defined by its reinforced insulation rating per DIN EN IEC 60747-17 (VDE 0884-17). This value is listed in Table 19 of the ADuM2285ARIZ datasheet and corresponds to 456 VRMS for sinusoidal waveforms-enabling use in 400 VAC industrial bus monitoring and medical auxiliary power supplies.
ADUM2285ARIZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 10ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM2285ARIZ FAQ
1.How can I place an order for ADUM2285ARIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM2285ARIZ 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 ADUM2285ARIZ reliable?
The price and inventory of ADUM2285ARIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM2285ARIZ is usually 5 days.
3.What payment methods are accepted for ADUM2285ARIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM2285ARIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM2285ARIZ?
ADUM2285ARIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM2285ARIZ 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 ADUM2285ARIZ?
For technical support, including ADUM2285ARIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM2285ARIZ requirements.
6.How does Aetrix verify that ADUM2285ARIZ is sourced from the original manufacturer or authorized distributors?
All ADUM2285ARIZ 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 ADUM2285ARIZ meets industry standards.
7.What is the process for return or replacement of ADUM2285ARIZ?
All ADUM2285ARIZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM2285ARIZ, 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 ADUM2285ARIZ part is unused and in its original packaging.
Return procedure for ADUM2285ARIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM2285ARIZ 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…
