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Analog Devices Inc. ADUM5242ARZ
- Part No.:
- ADUM5242ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM5242ARZ.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:188
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Product details
Overview
ADUM5242ARZ from Analog Devices is a dual-channel digital isolator with integrated isoPower® DC-to-DC converter delivering 5 V/10 mA isolated output, supporting dc to 1 Mbps signal isolation, housed in a narrow-body 8-lead SOIC package, and used in isolated gate driver bias, PLC I/O modules, and industrial sensor interfaces requiring reinforced insulation.
For engineers reviewing the ADUM5242ARZ datasheet, ADUM5242ARZ pinout, ADUM5242ARZ application, or ADUM5242ARZ equivalent, this page provides verified timing specs (≤70 ns propagation delay, ≤3 ns pulse width distortion), safety certifications (UL 1577, VDE 0884-17 pending), isolation parameters (2500 V rms, 560 V peak VIORM), and functional truth table behavior under enabled/disabled DC-DC modes.
Technical Context
The ADUM5242ARZ implements iCoupler® chip-scale transformer technology for both logic signal isolation and isolated power conversion, eliminating external DC-DC converters in low-power isolated systems. Its dual channels operate independently with codirectional channel-to-channel matching of ≤3 ns and common-mode transient immunity >25 kV/µs.
It features an internal 300 MHz oscillator driving the isoPower DC-DC section, with hysteresis-based VDD-controlled enable/disable (enable threshold 4.2–4.5 V, disable threshold ≤3.7 V). In DC-DC disabled mode, it draws only 2.2 mA primary-side supply current while maintaining full signal isolation functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 2500 V rms for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC/EN/CSA 62368-1. |
| VIORM | 560 V peak - maximum repetitive isolation voltage compatible with 50-year service life under reinforced insulation. |
| DC-DC Output | 5 V ±0.5 V at up to 10 mA - regulated isolated supply eliminates need for external isolated DC-DC in space-constrained designs. |
| Propagation Delay | 25–70 ns - ensures precise timing in feedback loops and high-speed digital control paths. |
| Pulse Width Distortion | ≤3 ns - preserves duty cycle integrity for PWM signals in motor control and power supply applications. |
| Data Rate | 1 Mbps (NRZ) - supports moderate-speed digital communication between isolated domains without external clocking. |
| Channel Matching | ≤3 ns codirectional - enables synchronized dual-signal transmission critical for differential interface emulation. |
| Supply Current (DC-DC Disabled) | 2.2 mA at VDD = 4.0 V - ultra-low quiescent draw allows operation in partial-power-down system states. |
Pinout & Package
Narrow-body 8-lead SOIC package (SOIC_N), RoHS compliant, with creepage/clearance ≥4 mm and internal insulation gap ≥17 µm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Primary-side supply input | Enables internal DC-DC when 4.5–5.5 V applied; disables it at 2.7–4.0 V with hysteresis. |
| 2 - VOA | Secondary-side logic output A | Active-high CMOS output referenced to GNDISO; drives isolated MCU peripherals or gate drivers. |
| 3 - VOB | Secondary-side logic output B | Independent output channel; matches VOA timing within ≤3 ns for synchronized control signals. |
| 4 - GND | Primary-side ground reference | Return path for VDD and input-side logic; must be separated from GNDISO by PCB isolation barrier. |
| 5 - GNDISO | Secondary-side isolated ground | Reference for VOA, VOB, and VISO; forms galvanic barrier preventing ground loop currents. |
| 6 - VIB | Primary-side logic input B | Accepts 0.3×VDD/0.7×VDD thresholds; supports direct connection to microcontroller GPIOs. |
| 7 - VIA | Primary-side logic input A | Input paired with VIB; truth table confirms independent A/B channel operation in all DC-DC modes. |
| 8 - VISO | Isolated supply output/input | Delivers 5 V/10 mA when DC-DC enabled; accepts external 2.7–5.5 V supply when disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isoPower DC-DC | Eliminates external isolated power supply, reducing BOM count and PCB area in compact industrial modules. |
| Reinforced insulation certification | UL 1577 (2500 V rms), IEC/EN/CSA 62368-1, and pending VDE 0884-17 - enables compliance in safety-critical PLC and medical auxiliary circuits. |
| High CMTI | >25 kV/µs - maintains signal integrity in noisy motor drive and inverter environments with fast-switching SiC/GaN FETs. |
| Low propagation skew | ≤3 ns channel-to-channel matching - supports time-critical dual-channel functions like complementary PWM generation. |
| DC-correct operation | Internal refresh pulses ensure stable logic state during static input conditions - essential for fault-monitoring and watchdog interfaces. |
| Thermal robustness | Rated for 105°C ambient operation with θJA = 80°C/W - suitable for enclosed industrial enclosures without forced airflow. |
Applications
| Industrial PLC Digital I/O | Isolated Gate Driver Bias Supply |
|---|---|
Use Scenario: Digital input/output modules in programmable logic controllers require galvanic separation between field-side 24 V sensors/actuators and backplane 3.3 V/5 V logic. IC Role / Device Role / Timing Role: ADUM5242ARZ provides dual-channel signal isolation plus local 5 V bias for downstream optocoupler replacements or level-shifting buffers. Use Value: Integrated 5 V/10 mA output powers isolated logic stages directly, reducing component count versus discrete isolator + DC-DC solutions. |
Use Scenario: Half-bridge gate drivers for motor inverters need isolated logic-level inputs and auxiliary bias for high-side driver ICs. IC Role / Device Role / Timing Role: ADUM5242ARZ delivers matched timing for upper/lower FET control signals while powering the high-side driver's floating supply rail. Use Value: ≤3 ns channel matching prevents shoot-through risk; 2500 V rms isolation withstands bus voltages up to 800 VDC. |
| Medical Auxiliary Power Isolation | Energy Meter Communication Interface |
Use Scenario: Patient-connected medical devices require reinforced insulation between mains-powered subsystems and battery-backed monitoring logic. IC Role / Device Role / Timing Role: ADUM5242ARZ isolates UART or SPI lines while supplying regulated 5 V to isolated ADCs or temperature sensors. Use Value: VDE 0884-17 pending certification and 560 V peak VIORM support compliance with IEC 61010-1 and IEC 62368-1 safety standards. |
Use Scenario: Smart energy meters use isolated RS-485 or M-Bus interfaces to communicate with utility networks across high-voltage distribution lines. IC Role / Device Role / Timing Role: ADUM5242ARZ isolates data lines and powers isolated transceiver ICs, enabling noise-immune communication in EMI-heavy substations. Use Value: >25 kV/µs CMTI rejects switching noise from nearby transformers; 1 Mbps capability supports high-throughput firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si88222ED-IS | Capacitive isolation; 5 V/100 mA isolated output; higher efficiency but larger 16-pin QSOP package. | Supports higher load current and wider input range (3–5.5 V), better suited for multi-rail isolated systems. | Choose when >10 mA isolated supply or lower thermal dissipation is required; not pin-compatible. |
| ISO7721DWR | No integrated DC-DC; requires external isolated supply; 100 Mbps data rate; smaller 8-pin SOIC package. | Lacks on-chip power, limiting use to designs with pre-existing isolated rails; superior speed for high-bandwidth protocols. | Choose when isolated power is already available and higher data rate (100 Mbps vs. 1 Mbps) is needed; pinout differs significantly. |
Compared with Si88222ED-IS and ISO7721DWR, the ADUM5242ARZ uniquely combines 2500 V rms reinforced isolation, integrated 5 V/10 mA power, and ≤3 ns channel matching in an industry-standard 8-pin SOIC, making it optimal for cost-sensitive, space-constrained industrial I/O where moderate data rate and self-contained power are prioritized.
Availability
ADUM5242ARZ is available at Aetrix Electronics and suitable for industrial PLC modules, isolated gate driver bias supplies, and medical auxiliary power systems requiring stable component supply, long-term lifecycle assurance, and certified reinforced insulation.
Supply support for ADUM5242ARZ 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 is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and communications.
The ADUM5242ARZ belongs to the iCoupler® digital isolator family, designed specifically to replace optocouplers in industrial, medical, and energy infrastructure systems where reliability, timing accuracy, and regulatory-compliant isolation are critical.
FAQ
What is the maximum load current supported by the ADUM5242ARZ's integrated DC-DC converter?
The ADUM5242ARZ's integrated isoPower DC-DC converter delivers up to 10 mA at 5 V on the VISO pin, with output regulation maintained from 0 mA to 10 mA load. At full load, VISO remains within 4.5–5.5 V, and the primary-side supply current increases to 140 mA. This 50 mW capability is sufficient to power isolated logic, small transceivers, or gate driver bias circuits without external DC-DC components.
How does the ADUM5242ARZ behave when its internal DC-DC converter is disabled?
When VDD is reduced to 2.7–4.0 V, the ADUM5242ARZ disables its internal DC-DC converter and draws only 2.2 mA supply current. Signal isolation remains fully functional: inputs VIA/VIB drive outputs VOA/VOB using externally supplied VISO (2.7–5.5 V). The truth table confirms identical logic behavior in both enabled and disabled modes, enabling flexible power architecture design.
Does the ADUM5242ARZ support bidirectional signal isolation?
No, the ADUM5242ARZ provides unidirectional signal isolation only: VIA and VIB are dedicated primary-side inputs, while VOA and VOB are dedicated secondary-side outputs. Directionality is fixed per pin function (Table 11); it cannot be reversed. For bidirectional isolation, designers must pair ADUM5242ARZ with a complementary device or select a different isolator family such as ADUM12xx series with configurable direction pins.
What safety certifications apply to the ADUM5242ARZ?
The ADUM5242ARZ carries UL 1577 (2500 V rms, 1-minute test), IEC/EN/CSA 62368-1, IEC/CSA 61010-1, CQC GB 4943.1, and pending DIN EN IEC 60747-17 (VDE 0884-17) approvals. Its VIORM of 560 V peak and reinforced insulation rating make it suitable for applications requiring basic or reinforced insulation per IEC 60664-1, including industrial control and medical auxiliary circuits.
Can the ADUM5242ARZ operate across the full industrial temperature range?
Yes, the ADUM5242ARZ is specified for continuous operation from −40°C to +105°C ambient temperature. Its thermal resistance (θJA = 80°C/W) and internal thermal derating curve (Figure 4) ensure reliable performance at full load across this range. No output current derating is required up to 105°C, supporting deployment in sealed enclosures, motor control cabinets, and outdoor energy infrastructure.
ADUM5242ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoPower®, iCoupler®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 0/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 70ns, 70ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.7V ~ 4.0V, 4.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM5242ARZ FAQ
1.How can I place an order for ADUM5242ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM5242ARZ 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 ADUM5242ARZ reliable?
The price and inventory of ADUM5242ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM5242ARZ is usually 5 days.
3.What payment methods are accepted for ADUM5242ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM5242ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM5242ARZ?
ADUM5242ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM5242ARZ 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 ADUM5242ARZ?
For technical support, including ADUM5242ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM5242ARZ requirements.
6.How does Aetrix verify that ADUM5242ARZ is sourced from the original manufacturer or authorized distributors?
All ADUM5242ARZ 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 ADUM5242ARZ meets industry standards.
7.What is the process for return or replacement of ADUM5242ARZ?
All ADUM5242ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM5242ARZ, 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 ADUM5242ARZ part is unused and in its original packaging.
Return procedure for ADUM5242ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM5242ARZ Tags
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ISO1212DBQR
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ISO6721BDR
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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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