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Analog Devices Inc. ADUM2280CRIZ
- Part No.:
- ADUM2280CRIZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM2280CRIZ.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:152
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Product details
Overview
ADuM2280CRIZ from Analog Devices is a 5 kVRMS dual-channel digital isolator using iCoupler® transformer-based technology, providing bidirectional signal isolation with default-high output logic state. It supports up to 100 Mbps data rate, 24 ns max propagation delay, and operates across 3.0 V–5.5 V supply rails on both sides-enabling level translation in industrial RS-485 transceiver interfaces.
For engineers reviewing the ADuM2280CRIZ datasheet, ADuM2280CRIZ pinout, ADuM2280CRIZ application, or ADuM2280CRIZ equivalent, key selection criteria include reinforced 5000 VRMS isolation rating, >25 kV/μs common-mode transient immunity, C-grade timing performance, SOIC-16W enhanced creepage package, and compatibility with medical (2 MOPP) and industrial safety standards.
Technical Context
The ADuM2280CRIZ implements monolithic air-core transformers for galvanic isolation between two independent CMOS logic channels, eliminating LED aging and temperature drift issues inherent in optocouplers. Its patented refresh circuit ensures DC-correct output states during input signal inactivity or power-up sequencing.
It features asymmetric channel architecture: Side 1 (pins 1–8) handles inputs VIA/VIB and supplies VDD1/GND1; Side 2 (pins 9–16) delivers outputs VOA/VOB with separate VDD2/GND2. The device maintains tight channel-to-channel matching (≤5 ns skew) and low pulse width distortion (≤2 ns) under 100 Mbps operation at 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute - certified reinforced insulation per UL 1577, VDE 0884-17, and IEC 60601-1 (2 MOPP). |
| Data Rate | Up to 100 Mbps - supports high-speed serial links including isolated UART, SPI clock/data lines, and digital power control loops. |
| Propagation Delay | 24 ns maximum (C grade) - enables precise timing-critical applications such as motor phase current sensing and gate driver feedback. |
| Common-Mode Immunity | >25 kV/μs - sustains reliable operation in noisy environments like variable-frequency drives and switch-mode power supplies. |
| Supply Range | 3.0 V–5.5 V on both sides - allows level translation between 3.3 V microcontrollers and 5 V peripherals without external level shifters. |
| Default Output State | High - ensures fail-safe logic-high assertion on power-up or input-side undervoltage, critical for safety interlocks. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and medical equipment deployment. |
Pinout & Package
ADuM2280CRIZ uses a 16-lead SOIC wide-body package (SOIC_W) with 8.7 mm minimum creepage and clearance, optimized for reinforced insulation in high-voltage systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, GND1 | Input-side ground reference | Provides return path for Side 1 logic; must be isolated from GND2 with ≥8.7 mm PCB spacing. |
| 3, VDD1 | Input-side supply rail | Accepts 3.0–5.5 V; powers internal input buffers and transformer driver circuitry. |
| 4, VIA | Channel A input | CMOS-compatible logic input; controls VOA output with default-high behavior on power loss. |
| 5, VIB | Channel B input | CMOS-compatible logic input; controls VOB output; shares same default-high reset behavior as VIA. |
| 9, 16, GND2 | Output-side ground reference | Return path for Side 2 logic; electrically isolated from GND1; requires separate ground plane partitioning. |
| 12, VOB | Channel B output | CMOS output driving downstream logic; sinks/sours ±10 mA; maintains state during input-side power loss. |
| 13, VOA | Channel A output | CMOS output with identical drive strength and timing to VOB; supports synchronous dual-channel isolation. |
| 14, VDD2 | Output-side supply rail | Independent 3.0–5.5 V supply; enables voltage translation across isolation barrier (e.g., 3.3 V MCU → 5 V ADC). |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Replaces optocouplers with higher reliability, no LED degradation, and superior CMTI over temperature. |
| Patented refresh circuit | Maintains DC-correct output even with zero input transitions-critical for watchdog timeout and safety monitoring circuits. |
| Pin-compatible with ADuM220x/ADuM221x | Enables drop-in replacement in existing designs using ADuM2200/ADuM2201 without layout changes. |
| Reinforced insulation certification | Meets DIN EN IEC 60747-17 (VDE 0884-17), IEC 60601-1 (2 MOPP), and IEC 62368-1 for medical and industrial end-equipment. |
| Low dynamic power consumption | 0.09 mA/Mbps input + 0.04 mA/Mbps output - reduces thermal load in dense PCB layouts and battery-backed systems. |
Applications
| Industrial Motor Drives | Medical Patient Monitoring |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stages of servo drives. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting PWM enable and fault signals across 600 VDC bus, with sub-25 ns timing precision. Use Value: Prevents ground loop noise from corrupting gate timing while maintaining <5 ns channel skew for balanced phase switching. |
Use Scenario: Isolating ECG/EEG analog front-end digital control lines from USB host interface in Class II medical devices. IC Role / Device Role / Timing Role: Providing 2 MOPP-reinforced isolation for SPI clock/data between isolated sensor ASIC and microcontroller. Use Value: Meets IEC 60601-1 creepage/clearance requirements and withstands 6 kV surge per IEC 61000-4-5 without latch-up. |
| Programmable Logic Controllers | Isolated RS-485 Transceivers |
Use Scenario: Digitally isolating digital I/O expansion modules connected to backplane buses in harsh factory environments. IC Role / Device Role / Timing Role: Bidirectional signal isolator for status reporting and command reception, operating at 25 Mbps with 125°C ambient tolerance. Use Value: Sustains >25 kV/μs common-mode transients induced by nearby contactor switching without data corruption. |
Use Scenario: Level-translating and isolating TX/RX lines between 3.3 V MCU and 5 V RS-485 transceiver in building automation nodes. IC Role / Device Role / Timing Role: Dual-channel isolator enabling 3.3 V ↔ 5 V logic translation across isolation barrier with no external components. Use Value: Eliminates need for discrete level shifters while maintaining 5000 VRMS isolation and 100 Mbps headroom for future protocol upgrades. |
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 |
|---|---|---|---|
| ADuM2281CRIZ | Same package and pinout; default-high output on Channel A only; Channel B defaults low on power loss. | Required where asymmetric fail-safe behavior is needed (e.g., one channel enables power, another signals fault). | Select ADuM2281CRIZ when mixed default states improve system-level fault containment. |
| SI8620ED-B-IS | Capacitive isolation; 5000 VRMS rating; 150 Mbps max; 16-pin SOIC_W; no refresh circuit - may lose DC state during long idle periods. | Suitable for high-speed data links but not safety-critical DC-stable monitoring paths. | Choose SI8620ED-B-IS only if speed >100 Mbps is mandatory and DC correctness is non-critical. |
Compared with ADuM2280CRIZ, ADuM2281CRIZ offers differentiated channel default states for finer-grained fail-safe control, while SI8620ED-B-IS trades transformer-based DC stability for higher bandwidth-making ADuM2280CRIZ optimal for medical and industrial applications demanding guaranteed output state integrity.
Availability
ADuM2280CRIZ is available at Aetrix Electronics and suitable for industrial motor drives, medical patient monitors, and programmable logic controllers requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for ADuM2280CRIZ 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.
The ADuM2280CRIZ belongs to the iCoupler® digital isolator product line, engineered specifically for high-reliability, safety-certified galvanic isolation in mission-critical systems where optocoupler limitations-aging, CMTI, and temperature drift-are unacceptable.
FAQ
What is the default output state of ADuM2280CRIZ during power-up or input-side undervoltage?
The ADuM2280CRIZ has a default-high output state on both channels (VOA and VOB). When VDD1 is unpowered or below UVLO threshold (2.4 V), the outputs remain logic high until VDD1 is restored and the internal refresh circuit re-establishes correct state within 1.6 µs. This behavior is confirmed in Table 22 of the ADuM2280CRIZ datasheet and ensures fail-safe operation in safety-critical systems.
Does ADuM2280CRIZ support level translation between different supply voltages?
Yes, ADuM2280CRIZ supports true bidirectional level translation: VDD1 can operate from 3.0 V–5.5 V independently of VDD2, which also ranges from 3.0 V–5.5 V. This allows interfacing a 3.3 V microcontroller (VDD1) with a 5 V ADC or transceiver (VDD2) without external level shifters. The logic thresholds scale with respective VDDx (VIH = 0.7×VDDx), ensuring robust signal integrity across voltage domains.
What safety certifications apply to ADuM2280CRIZ?
ADuM2280CRIZ carries UL 1577 (5000 VRMS), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 645 VPEAK), IEC/CSA 60601-1 (2 MOPP), IEC/CSA 62368-1, and CQC GB 4943.1 approvals. These certifications validate its use in Class II medical devices, industrial equipment, and consumer electronics requiring reinforced insulation and high surge immunity.
Can ADuM2280CRIZ replace ADuM2200 or ADuM2210 in an existing design?
Yes, ADuM2280CRIZ is pin-compatible with ADuM2200 and ADuM2210 per Figure 1 of the datasheet, sharing identical SOIC-16W footprint and pin functions. However, ADuM2280CRIZ offers improved CMTI (>25 kV/μs vs. 25 kV/μs typical), tighter propagation delay skew (≤5 ns vs. ≤10 ns), and extended 125°C operation-making it a direct, performance-enhancing drop-in upgrade.
How does the refresh circuit in ADuM2280CRIZ maintain DC correctness?
The ADuM2280CRIZ incorporates a patented refresh circuit that periodically samples input states and updates transformer coupling even during static input conditions. With a 1.6 µs refresh period, it guarantees output fidelity regardless of input transition frequency-unlike optocouplers or basic capacitive isolators that lose DC state during prolonged idle periods. This feature is essential for watchdog timers and safety interlock monitoring.
ADUM2280CRIZ 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:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 24ns, 24ns
- Pulse Width Distortion (Max):
- 2ns
- 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
ADUM2280CRIZ FAQ
1.How can I place an order for ADUM2280CRIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM2280CRIZ 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 ADUM2280CRIZ reliable?
The price and inventory of ADUM2280CRIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM2280CRIZ is usually 5 days.
3.What payment methods are accepted for ADUM2280CRIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM2280CRIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM2280CRIZ?
ADUM2280CRIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM2280CRIZ 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 ADUM2280CRIZ?
For technical support, including ADUM2280CRIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM2280CRIZ requirements.
6.How does Aetrix verify that ADUM2280CRIZ is sourced from the original manufacturer or authorized distributors?
All ADUM2280CRIZ 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 ADUM2280CRIZ meets industry standards.
7.What is the process for return or replacement of ADUM2280CRIZ?
All ADUM2280CRIZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM2280CRIZ, 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 ADUM2280CRIZ part is unused and in its original packaging.
Return procedure for ADUM2280CRIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM2280CRIZ Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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