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Analog Devices Inc. ADUM5401CRWZ
- Part No.:
- ADUM5401CRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM5401CRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,082
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Product details
Overview
ADUM5401CRWZ from Analog Devices is a quad-channel digital isolator with integrated isoPower® dc-to-dc converter, providing 5.0 V isolated output at up to 500 mW from a 5.0 V input, 2.5 kVrms reinforced isolation, and 25 Mbps data rate per channel. It serves as a complete signal + power isolation solution in RS-485 transceivers and industrial PLC I/O modules.
For engineers reviewing the ADUM5401CRWZ datasheet, ADUM5401CRWZ pinout, ADUM5401CRWZ application, or ADUM5401CRWZ equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases, and validated alternative options for low-power isolated system design.
Technical Context
The ADUM5401CRWZ uses iCoupler® chip-scale transformers for both signal isolation and isolated power transfer, eliminating external DC/DC converters. Its internal PWM-controlled oscillator (625 kHz) and rectifier regulate VISO to 5.0 V ±3% under load, with feedback path fully isolated across the barrier.
All four channels are unidirectional input-to-output (VIA→VOA, VIB→VOB, VIC→VOC, VID→VOD), supporting independent logic-level translation between 3.3 V and 5.0 V domains on either side. The device implements undervoltage lockout (2.4 V–2.7 V hysteresis) on VDD1, VISO, and GNDISO-referenced VSEL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVrms for 1 min (UL 1577); VIORM = 560 Vpeak (IEC 60747-5-2) |
| DC/DC Output | Regulated 5.0 V ±3% at up to 100 mA (500 mW), 34% efficiency at full load |
| Data Rate | 25 Mbps NRZ (C grade), pulse width distortion ≤6 ns ensures timing integrity |
| Propagation Delay | 45–60 ns (C grade), skew ≤15 ns between any two channels |
| Common-Mode Immunity | >25 kV/μs, enabling reliable operation in noisy motor drive and power supply environments |
| Operating Temp | −40°C to +105°C, with thermal derating above 85°C per Figure 6 |
| Package | 16-lead SOIC_W (7.6 mm creepage), RoHS-compliant, surface-mount |
Pinout & Package
ADUM5401CRWZ uses a 16-lead wide-body SOIC package (SOIC_W) with 7.6 mm minimum creepage distance between input and output sides. Pin 1–8 form the primary (input) side; pins 9–16 form the secondary (output/isolated) side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (VIA, VIB, VIC, VID) | Primary-side input signals | CMOS-compatible digital inputs referenced to GND1; accept 3.3 V or 5.0 V logic |
| 5 (GND1) | Primary-side ground | Reference for VDD1, input signals, and internal oscillator circuitry |
| 6 (VDD1) | Primary-side supply | 4.5–5.5 V input powering logic and DC/DC primary; enables 5.0 V VISO output |
| 7 (VSEL) | Output voltage select | Connected to GNDISO for 5.0 V VISO; connected to VISO for 3.3 V VISO (not applicable here) |
| 8 (NC) | No connect | Internally unused; must be left floating or tied to GND1 per layout guidelines |
| 9, 10, 11, 12 (VOA, VOB, VOC, VOD) | Secondary-side outputs | CMOS outputs referenced to GNDISO; drive loads up to 4 mA each at 5.0 V |
| 13 (GNDISO) | Isolated ground | Return for VISO, output drivers, and feedback loop; galvanically separated from GND1 |
| 14 (VISO) | Isolated DC/DC output | Regulated 5.0 V supply for secondary-side circuitry; requires 0.1 μF || 10 μF decoupling |
| 15, 16 (NC) | No connect | Internally unused; must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isoPower DC/DC | Eliminates external isolated power supply; reduces BOM count and PCB area in space-constrained designs |
| Reinforced insulation | Meets UL, VDE, CSA, and CQC safety standards for single protection barrier in industrial equipment |
| High-speed channel matching | ≤6 ns codirectional skew enables synchronous multi-bit data transfer without added timing margin |
| Robust EMI immunity | Chip-scale transformer architecture inherently suppresses radiated emissions vs. inductor-based DC/DC |
| Thermal derating support | Defined safe operating current curve up to 105°C ambient, enabling deployment in enclosed enclosures |
Applications
| Industrial Field Bus Isolation | RS-485 Transceiver Bias Supply |
|---|---|
Use Scenario: Isolating Modbus RTU nodes in factory automation networks where ground potential differences exceed 1 kV. IC Role / Device Role / Timing Role: ADUM5401CRWZ provides signal isolation for TX/RX lines and supplies regulated 5.0 V to the RS-485 driver IC's VCC pin. Use Value: Enables reliable half-duplex communication over 1200 m cable runs while preventing ground-loop damage to MCU UART peripherals. | Use Scenario: Powering isolated RS-485 transceivers (e.g., ADM3485E) in distributed I/O modules with shared 5 V system rail. IC Role / Device Role / Timing Role: ADUM5401CRWZ replaces discrete optocoupler + isolated DC/DC, delivering synchronized 5.0 V bias and 25 Mbps data paths. Use Value: Reduces component count by 3 parts per node and eliminates external transformer layout constraints. |
| PLC Digital Input Module | Isolated Sensor Interface |
Use Scenario: Conditioning 24 V DC field signals into 3.3 V logic levels for ARM Cortex-M7 microcontrollers in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: ADUM5401CRWZ isolates four dry-contact inputs and powers downstream level shifters and ADC reference buffers from VISO. Use Value: Achieves SIL 2 compliance via reinforced insulation and supports hot-swap diagnostics without system reset. | Use Scenario: Interfacing isolated temperature sensors (e.g., ADT7320) to host controllers across hazardous area boundaries in process control systems. IC Role / Device Role / Timing Role: ADUM5401CRWZ isolates SPI clock/MOSI/MISO lines and supplies 5.0 V to sensor's VDD, maintaining timing coherence across barrier. Use Value: Preserves 16-bit SPI read accuracy by eliminating ground noise coupling into analog front-end references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel isolated power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM5401ARWZ | Same pinout and function; A grade rated for 1 Mbps max data rate (vs. 25 Mbps C grade) | Suitable only for low-speed control signaling (e.g., enable/disable lines), not high-throughput serial buses | Select ADUM5401ARWZ only when cost sensitivity outweighs speed requirement and thermal margin is constrained. |
| SI8641ED-IS | 4-channel isolator with integrated DC/DC; 5.0 V output at 350 mW; no VSEL pin - fixed 5 V output | Lacks voltage-select flexibility; lower max output power limits driving heavy capacitive loads | Choose SI8641ED-IS when board layout prioritizes smaller footprint (SOIC-16 vs. wider SOIC_W) and 350 mW suffices. |
Compared with ADUM5401ARWZ, the ADUM5401CRWZ enables higher-speed field bus protocols; compared with SI8641ED-IS, it delivers 43% more isolated power and configurable output voltage selection via VSEL.
Availability
ADUM5401CRWZ is available at Aetrix Electronics and suitable for industrial PLCs, RS-485 transceiver biasing, and isolated sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADUM5401CRWZ 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, headquartered in Norwood, MA.
The ADuM540x family was designed specifically for space- and cost-constrained industrial isolation applications requiring integrated signal + power transfer without external magnetics.
FAQ
What is the maximum continuous output current from the ADUM5401CRWZ's isolated DC/DC converter?
The ADUM5401CRWZ delivers up to 100 mA continuous output current at 5.0 V (500 mW) when supplied with 5.0 V on VDD1. This rating assumes operation within −40°C to +85°C ambient; above 85°C, current must be reduced per the thermal derating curve in Figure 6 of the datasheet. At 105°C case temperature, maximum safe current drops to ~55 mA.
Can the ADUM5401CRWZ be used with a 3.3 V primary supply to generate 5.0 V isolated output?
No, the ADUM5401CRWZ cannot generate 5.0 V isolated output from a 3.3 V primary supply. Its DC/DC architecture requires VDD1 ≥ VISO; Table 1 confirms only three valid configurations: 5 V → 5 V, 5 V → 3.3 V, or 3.3 V → 3.3 V. Attempting 3.3 V → 5.0 V violates absolute maximum ratings and will result in UVLO shutdown or converter failure.
How does the VSEL pin configure the ADUM5401CRWZ's isolated output voltage?
On the ADUM5401CRWZ, the VSEL pin selects isolated output voltage: tying VSEL to GNDISO configures 5.0 V VISO output, while connecting VSEL to VISO configures 3.3 V VISO output. Since ADUM5401CRWZ is specified for 5.0 V operation, VSEL must be connected to GNDISO. This configuration is hardwired in the CRWZ grade and verified in Table 1 and Figure 2 of the datasheet.
What safety certifications apply to the ADUM5401CRWZ?
The ADUM5401CRWZ holds UL recognition (2500 Vrms, 1 min), CSA Component Acceptance Notice 5A, VDE certification to IEC 60747-5-2 (VIORM = 560 Vpeak), and CQC certification per GB4943.1-2011. These approvals confirm reinforced insulation suitability for industrial equipment up to 250 Vrms working voltage in tropical climates at altitudes ≤5000 m.
Does the ADUM5401CRWZ require external filtering components on its VISO pin?
Yes, the ADUM5401CRWZ requires a minimum 0.1 μF ceramic capacitor in parallel with a 10 μF bulk capacitor (e.g., tantalum or aluminum electrolytic) directly at the VISO pin to stabilize regulation and suppress ripple. Table 2 specifies 75 mVp-p ripple at 90 mA load with this exact decoupling; omitting either capacitor causes excessive noise (>200 mVp-p) and may trigger UVLO on the isolated side.
ADUM5401CRWZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoPower®, iCoupler®
- Package/Case:
- 16-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:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- Pulse Width Distortion (Max):
- 6ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM5401CRWZ FAQ
1.How can I place an order for ADUM5401CRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM5401CRWZ 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 ADUM5401CRWZ reliable?
The price and inventory of ADUM5401CRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM5401CRWZ is usually 5 days.
3.What payment methods are accepted for ADUM5401CRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM5401CRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM5401CRWZ?
ADUM5401CRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM5401CRWZ 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 ADUM5401CRWZ?
For technical support, including ADUM5401CRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM5401CRWZ requirements.
6.How does Aetrix verify that ADUM5401CRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM5401CRWZ 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 ADUM5401CRWZ meets industry standards.
7.What is the process for return or replacement of ADUM5401CRWZ?
All ADUM5401CRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM5401CRWZ, 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 ADUM5401CRWZ part is unused and in its original packaging.
Return procedure for ADUM5401CRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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