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Analog Devices Inc. ADUM3301CRWZ
- Part No.:
- ADUM3301CRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM3301CRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 3CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,070
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Product details
Overview
ADUM3301CRWZ from Analog Devices is a triple-channel, high-speed digital isolator based on iCoupler® transformer technology, providing galvanic isolation for bidirectional signal transmission across an isolation barrier. It supports up to 90 Mbps NRZ data rate, features 2 ns maximum pulse width distortion and 2 ns channel-to-channel matching, and operates from 3.3 V or 5 V supplies - enabling level translation in industrial SPI and RS-485 interfaces.
For engineers reviewing the ADUM3301CRWZ datasheet, ADUM3301CRWZ pinout, ADUM3301CRWZ application, or ADUM3301CRWZ equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases, and validated alternative options for high-reliability isolated communication design.
Technical Context
The ADUM3301CRWZ implements three independent unidirectional isolation channels (2/1 configuration: two inputs on side A, one input on side B), using monolithic air-core transformers for signal coupling without optocoupler limitations. Its patented refresh circuit ensures DC correctness during idle periods and power transitions.
It achieves 25 kV/μs common-mode transient immunity and meets IEC/EN/CSA 62368-1, IEC/CSA 60601-1, and DIN EN IEC 60747-17 (VDE 0884-17) safety standards with VIORM = 560 V peak and VISO = 2500 V rms for 1 minute.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 90 Mbps (NRZ) - supports high-speed SPI clock domains and fast serial bus isolation without timing violation. |
| Pulse Width Distortion | 0.5–2 ns - preserves signal integrity for precise timing-critical protocols like encoder feedback or PWM control. |
| Channel-to-Channel Matching | 2 ns (codirectional), 5 ns (opposing-directional) - enables synchronized multi-signal transfer across isolation barrier. |
| Propagation Delay | 18–45 ns (depends on supply voltage) - ensures predictable latency for real-time control loop closure. |
| Common-Mode Transient Immunity | >25 kV/μs - maintains reliable operation in noisy motor drive or power converter environments. |
| Supply Voltage Range | 3.0–5.5 V per side - allows mixed-voltage system interfacing (e.g., 3.3 V MCU to 5 V peripheral). |
| Operating Temperature | −40°C to +105°C - qualified for extended industrial and automotive under-hood applications. |
Pinout & Package
ADUM3301CRWZ is housed in a 16-lead SOIC wide-body (RWZ) RoHS-compliant package with 7.5 mm creepage/clearance, optimized for reinforced insulation in industrial systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies side A (input side); accepts 3.0–5.5 V; powers channels A1–A2 and internal logic. |
| GND1 | Primary-side ground reference | Return path for VDD1; must be isolated from GND2 by PCB layout and physical spacing. |
| INA | Input A1 (side A) | First unidirectional input channel on primary side; drives isolated output OUTA. |
| INB | Input A2 (side A) | Second unidirectional input channel on primary side; drives isolated output OUTB. |
| VDD2 | Secondary-side power supply | Supplies side B (output side); accepts 3.0–5.5 V; powers channel B1 and output drivers. |
| GND2 | Secondary-side ground reference | Return path for VDD2; forms isolated domain with VDD2; no electrical connection to GND1. |
| OUTA | Output A1 (side B) | Isolated replica of INA; referenced to VDD2/GND2; supports 3.3 V or 5 V logic levels. |
| OUTB | Output A2 (side B) | Isolated replica of INB; referenced to VDD2/GND2; enables dual-signal isolation from same side. |
| IN1 | Input B1 (side B) | Unidirectional input on secondary side; drives isolated output OUT1 on primary side. |
| OUT1 | Output B1 (side A) | Isolated replica of IN1; referenced to VDD1/GND1; completes bidirectional capability across barrier. |
| EN | Output enable control | Active-low; places all outputs (OUTA, OUTB, OUT1) in high-impedance state when asserted. |
| NC | No connect | Pins 12, 15, and 16 are unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Eliminates LED aging and CTR drift of optocouplers; provides stable timing and 50-year lifetime at rated stress. |
| Enhanced ESD reliability | Meets system-level IEC 61000-4-x testing requirements - critical for field-deployed industrial equipment. |
| Bidirectional channel architecture | Supports 2:1 channel split (A→B ×2, B→A ×1) - ideal for SPI master-slave isolation with shared MISO/MOSI lines. |
| Level translation | Operates with VDD1 = 3.3 V and VDD2 = 5 V (or vice versa) - bridges voltage domains without external level shifters. |
| Output enable function | Allows dynamic bus contention management in multi-device isolated networks via single EN pin control. |
Applications
| SPI Interface Isolation | Industrial RS-485 Transceiver Isolation |
|---|---|
Use Scenario: Isolating SPI bus between a 3.3 V microcontroller and isolated ADC/DAC in a PLC analog I/O module. IC Role / Device Role / Timing Role: ADUM3301CRWZ provides galvanic separation for MOSI, MISO, and SCLK lines while preserving sub-ns timing alignment. Use Value: Enables noise-free data acquisition in high-noise factory environments without degrading SPI timing margins at 20+ MHz clock rates. |
Use Scenario: Isolating control and status signals between an RS-485 transceiver and host MCU in a motor drive controller. IC Role / Device Role / Timing Role: ADUM301CRWZ isolates DE/RE control lines and receiver output (RO) to prevent ground loop-induced communication failure. Use Value: Maintains robust half-duplex RS-485 communication under 25 kV/μs transients generated by adjacent IGBT switching. |
| Medical Equipment Data Converter Isolation | Renewable Energy Inverter Gate Driver Interface |
Use Scenario: Isolating serial interface between isolated patient-monitoring sensor front-end and main processing unit. IC Role / Device Role / Timing Role: ADUM3301CRWZ delivers certified reinforced insulation (IEC/CSA 60601-1) for analog-to-digital data streams from isolated amplifiers. Use Value: Meets stringent creepage/clearance and lifetime reliability requirements for Class II medical devices without optical degradation. |
Use Scenario: Isolating PWM feedback and fault signals between DSP controller and high-side gate driver IC in solar inverter power stage. IC Role / Device Role / Timing Role: ADUM3301CRWZ transmits gate driver status (e.g., DESAT, UVLO) with <2 ns skew to ensure coordinated protection response. Use Value: Prevents false triggering during fast dv/dt events in 1200 V SiC-based inverters by maintaining signal fidelity under >25 kV/μs CM transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3301BRWZ | Lower max data rate (10 Mbps), higher PWD (3 ns), wider propagation delay range (20–50 ns). | Suitable for cost-sensitive industrial I/O where 90 Mbps is unnecessary. | Select when system bandwidth ≤10 Mbps and budget constraints outweigh speed needs. |
| SI8631BB-B-IS | Capacitive isolation; 100 Mbps max rate; 2.5 kV rms isolation rating; no VDE 0884-17 certification. | Lacks reinforced insulation for medical or high-voltage industrial use; different safety qualification scope. | Choose only for non-safety-critical consumer or telecom applications requiring lower power at mid-speed. |
Compared with ADUM3301BRWZ and SI8631BB-B-IS, ADUM3301CRWZ uniquely combines 90 Mbps performance, VDE 0884-17 certification, and 25 kV/μs CMTI - making it the only option for high-speed, safety-certified isolation in demanding industrial and medical systems.
Availability
ADUM3301CRWZ is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and renewable energy systems requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for ADUM3301CRWZ 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 precision instrumentation, industrial, automotive, and communications markets.
The ADuM3300/ADuM3301 product line was designed specifically for robust, high-speed digital isolation in harsh electromagnetic environments - targeting SPI, RS-485, and data converter interfaces where optocoupler limitations impede performance and reliability.
FAQ
What is the maximum guaranteed data rate for ADUM3301CRWZ?
The ADUM3301CRWZ guarantees 90 Mbps NRZ data rate with ≤2 ns pulse width distortion, as specified in Table 1 of the Rev. F datasheet under 5 V operation. While the typical maximum reaches 120 Mbps, system designs must adhere to the 90 Mbps specification for full timing compliance across temperature and voltage ranges.
Does ADUM3301CRWZ support level translation between 3.3 V and 5 V domains?
Yes, ADUM3301CRWZ supports mixed-supply operation: VDD1 can be 3.3 V while VDD2 is 5 V (or vice versa), enabling seamless level translation across the isolation barrier. Input thresholds and output drive strengths are fully specified for both configurations in Tables 2 and 3 of the datasheet.
How many isolation channels does ADUM3301CRWZ provide, and what is their directionality?
ADUM3301CRWZ provides three independent unidirectional isolation channels: two from side A to side B (INA→OUTA, INB→OUTB), and one from side B to side A (IN1→OUT1). This 2:1 asymmetric configuration is optimized for SPI and similar bidirectional protocols requiring more transmit than receive paths.
What safety certifications apply to ADUM3301CRWZ?
ADUM3301CRWZ is certified to UL 1577 (2500 V rms for 1 minute), IEC/EN/CSA 62368-1, IEC/CSA 60601-1, IEC/CSA 61010-1, CQC GB4943.1, and DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 V peak - qualifying it for reinforced insulation in medical, industrial, and measurement equipment.
Can ADUM3301CRWZ replace ADUM3300CRWZ in a design?
Yes, ADUM3301CRWZ is a functional replacement for ADUM3300CRWZ with identical pinout, package, and isolation ratings. The key difference is channel configuration: ADUM3300CRWZ has three A→B channels, while ADUM3301CRWZ has two A→B and one B→A channel - verify signal directionality in your schematic before substitution.
ADUM3301CRWZ 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:
- 3
- Inputs - Side 1/Side 2:
- 2/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 90Mbps
- Propagation Delay tpLH / tpHL (Max):
- 32ns, 32ns
- Pulse Width Distortion (Max):
- 2ns
- 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
ADUM3301CRWZ FAQ
1.How can I place an order for ADUM3301CRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3301CRWZ 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 ADUM3301CRWZ reliable?
The price and inventory of ADUM3301CRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3301CRWZ is usually 5 days.
3.What payment methods are accepted for ADUM3301CRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3301CRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3301CRWZ?
ADUM3301CRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3301CRWZ 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 ADUM3301CRWZ?
For technical support, including ADUM3301CRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3301CRWZ requirements.
6.How does Aetrix verify that ADUM3301CRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM3301CRWZ 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 ADUM3301CRWZ meets industry standards.
7.What is the process for return or replacement of ADUM3301CRWZ?
All ADUM3301CRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3301CRWZ, 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 ADUM3301CRWZ part is unused and in its original packaging.
Return procedure for ADUM3301CRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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