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Analog Devices Inc. ADUM1311ARWZ-RL
- Part No.:
- ADUM1311ARWZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1311ARWZ-RL.pdf
- Description:
- DGTL ISO 3750VRMS 3CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,367
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Product details
Overview
ADUM1311ARWZ-RL from Analog Devices is a triple-channel digital isolator based on iCoupler® transformer technology, providing galvanic isolation between microcontroller SPI buses and high-voltage power stages. It supports bidirectional data transfer at up to 10 Mbps (BRWZ grade), operates from 2.7 V to 5.5 V on both sides, features programmable default output states, and delivers >25 kV/µs common-mode transient immunity. It is used in isolated motor control gate driver interfaces.
For engineers reviewing the ADUM1311ARWZ-RL datasheet, ADUM1311ARWZ-RL pinout, ADUM1311ARWZ-RL application, or ADUM1311ARWZ-RL equivalent, key selection criteria include channel directionality (2:1), 10 Mbps NRZ data rate capability, SOIC-16 wide-body package with 8.1 mm creepage, and mixed-voltage level translation (3 V/5 V or 5 V/3 V).
Technical Context
The ADUM1311ARWZ-RL implements three independent isolation channels using monolithic air-core transformers, eliminating LED/photodiode aging and CTR drift. Its architecture includes a patented refresh circuit ensuring DC-correct output during power-up, power-down, and idle periods without input transitions.
It supports asymmetric supply configurations: VDD1 = 5 V / VDD2 = 3 V or VDD1 = 3 V / VDD2 = 5 V, enabling level translation across the barrier. Channel configuration is fixed as two inputs on Side 1 (A, B) and one output on Side 1 (C), with corresponding isolated outputs/inputs on Side 2 - confirmed by Figure 2 (ADuM1311 functional block diagram) and Pin Configuration Table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 10 Mbps NRZ - supports high-speed SPI clocking up to 5 MHz SCLK with guaranteed pulse width distortion ≤5 ns. |
| Supply Voltage Range | 2.7 V to 5.5 V per side - enables interoperability between 3.3 V logic and 5 V systems, including mixed-supply operation. |
| Propagation Delay | 20 ns to 60 ns - ensures tight timing alignment for real-time control loops in motor drives and power converters. |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity in noisy industrial environments with fast-switching IGBTs or SiC MOSFETs. |
| Isolation Rating | 2500 Vrms for 1 minute (UL 1577); VIORM = 560 Vpeak (DIN EN IEC 60747-17) - meets reinforced insulation requirements for functional safety designs. |
| Quiescent Current (3 V/3 V) | 1.0 mA (VDD1) + 0.9 mA (VDD2) - enables low-power isolated communication in battery-backed or energy-sensitive applications. |
| Package | 16-lead SOIC wide body (7.6 mm × 10.3 mm) with 8.1 mm creepage - supports IPC-2221 Class B spacing for 300 V working voltage. |
Pinout & Package
ADUM1311ARWZ-RL uses a 16-lead, RoHS-compliant, SOIC wide-body package (package code RWZ) with 8.1 mm minimum external creepage and 0.050″ lead pitch. Pin 1 is marked with a dot; pins 1–8 form Side 1 (input side), pins 9–16 form Side 2 (output side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD1) | Side 1 Power Supply | Supplies 2.7–5.5 V to input-side logic and isolation transmitter; decoupling capacitor required. |
| 2 (GND1) | Side 1 Ground Reference | Return path for VDD1; must be separated from GND2 by isolation barrier. |
| 3 (A) | Input Channel A | Unidirectional input from MCU GPIO or SPI MOSI; Schmitt-triggered for noise immunity. |
| 4 (B) | Input Channel B | Unidirectional input (e.g., SPI SCLK); shares VDD1/GND1 domain with A and C. |
| 5 (CTRL2) | Output Default Control | Configures default state of Channel C output when VDD1 is unpowered (logic high/low via pull-up/down). |
| 6 (DISABLE) | Output Disable Enable | Active-high control: sets all outputs to programmed default state when asserted. |
| 7 (C) | Output Channel C | Unidirectional output from Side 1 to Side 2 (e.g., SPI MISO feedback path). |
| 8 (GND1) | Side 1 Ground (Second) | Dual ground connection improves noise rejection on input side. |
| 9 (VDD2) | Side 2 Power Supply | Supplies 2.7–5.5 V to output-side logic and isolation receiver; independent of VDD1. |
| 10 (GND2) | Side 2 Ground Reference | Return path for VDD2; forms isolated domain with VDD2 and output pins. |
| 11 (VOA) | Output Channel A | Isolated output corresponding to input A (e.g., to gate driver enable line). |
| 12 (VOB) | Output Channel B | Isolated output corresponding to input B (e.g., to PWM trigger input). |
| 13 (CTRL1) | Input Default Control | Sets default state of Channels VOA/VOB when VDD2 is unpowered. |
| 14 (VOCA) | Input Channel C | Isolated input from Side 2 to Side 1 - enables bidirectional handshake (e.g., fault feedback). |
| 15 (VOB) | Output Channel B (redundant label) | Same function as Pin 12; dual labeling reflects internal routing symmetry. |
| 16 (GND2) | Side 2 Ground (Second) | Dual ground connection improves noise rejection on output side. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional channel configuration (2:1) | Two inputs (A,B) and one output (C) on Side 1; corresponding isolated outputs (VOA,VOB) and input (VOCA) on Side 2 - enables full-duplex SPI isolation with minimal pin count. |
| Programmable default output state | CTRL1 and CTRL2 pins allow fail-safe assertion of VOA/VOB or C to logic high or low during power loss - critical for safe shutdown in motor drives. |
| iCoupler® transformer isolation | Eliminates optocoupler CTR degradation and temperature drift; achieves 50-year lifetime under 105°C operation with no LED wear-out mechanism. |
| High CMTI (>25 kV/µs) | Prevents metastability and bit errors in gate driver interfaces exposed to fast dV/dt transients from SiC or GaN power switches. |
| Low dynamic power consumption | 0.04 mA/Mbps (VDD2) and 0.12 mA/Mbps (VDD1) at 5 V - reduces thermal load in densely packed inverters and PLC modules. |
Applications
| Industrial Motor Drive Interface | SPI-Isolated Data Converter Link |
|---|---|
Use Scenario: Isolating PWM enable signals and fault feedback between a 3.3 V microcontroller and 600 V three-phase inverter stage. IC Role / Device Role / Timing Role: ADUM1311ARWZ-RL provides galvanically isolated control signaling with <60 ns propagation delay skew to synchronize gate drivers across phases. Use Value: Enables safe, high-fidelity timing transfer while meeting IEC 61800-5-1 reinforced insulation requirements for drive systems. |
Use Scenario: Connecting an isolated ADC (e.g., AD7403) to an FPGA over SPI in a high-voltage energy meter design. IC Role / Device Role / Timing Role: ADUM1311ARWZ-RL isolates MOSI, SCLK, and MISO lines while supporting 10 Mbps burst reads for 16-bit conversion data. Use Value: Maintains SPI timing integrity with <5 ns pulse width distortion, avoiding setup/hold violations at 5 MHz clock rates. |
| RS-485 Transceiver Isolation | PLC Digital I/O Module |
Use Scenario: Isolating DE/RE control and differential data lines of an RS-485 transceiver (e.g., ADM2483) in a factory automation node. IC Role / Device Role / Timing Role: ADUM1311ARWZ-RL routes direction control (DE/RE) and half-duplex data across the barrier with matched channel delays. Use Value: Prevents ground loop currents and common-mode noise coupling into sensitive bus receivers while sustaining 10 Mbps data throughput. |
Use Scenario: Providing isolated 24 V digital input conditioning and status reporting in a modular PLC backplane. IC Role / Device Role / Timing Role: ADUM1311ARWZ-RL interfaces 24 V field-side sensors to 3.3 V controller-side logic with programmable fail-safe defaults. Use Value: Guarantees known output states during brownout conditions, preventing spurious actuator activation in safety-critical sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8631BB-B-IS | Capacitive isolation; 10 Mbps; 3-channel (2:1); SOIC-16; VDD = 2.5–5.5 V; CMTI = 35 kV/µs. | No programmable default outputs; requires external pull resistors for fail-safe behavior. | Select when higher CMTI is prioritized over configurable power-loss behavior. |
| ISO6731FDWR | Capacitive isolation; 10 Mbps; 3-channel (2:1); SOIC-16; VDD = 1.71–5.5 V; CMTI = 50 kV/µs; integrated LDO on VDD2. | LDO output not present on ADUM1311ARWZ-RL; ISO6731FDWR adds complexity but simplifies secondary-side power design. | Select when secondary-side regulation is needed and layout space allows LDO filtering components. |
Compared with SI8631BB-B-IS and ISO6731FDWR, ADUM1311ARWZ-RL uniquely combines transformer-based reliability, programmable default states for functional safety, and proven 105°C operation - making it preferred for industrial motion control where long-term parametric stability is non-negotiable.
Availability
ADUM1311ARWZ-RL is available at Aetrix Electronics and suitable for industrial motor drives, isolated data acquisition systems, and PLC digital I/O modules requiring stable component supply across extended product lifecycles.
Supply support for ADUM1311ARWZ-RL 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 since 1965.
The ADuM1310/ADuM1311 family was designed specifically for robust, low-power multichannel isolation in harsh industrial environments - emphasizing DC correctness, high CMTI, and mixed-voltage interoperability without external level shifters.
FAQ
What is the maximum data rate supported by ADUM1311ARWZ-RL?
The ADUM1311ARWZ-RL supports up to 10 Mbps NRZ data rate in BRWZ-grade configuration, verified under CL = 15 pF and CMOS signal levels. At this rate, pulse width distortion remains ≤5 ns and propagation delay skew stays within 30 ns, enabling reliable high-speed SPI and digital interface isolation. Lower-speed variants (ARWZ) are rated for 1 Mbps.
Does ADUM1311ARWZ-RL support level translation between 3 V and 5 V domains?
Yes, ADUM1311ARWZ-RL supports mixed-supply operation: VDD1 = 5 V / VDD2 = 3 V or VDD1 = 3 V / VDD2 = 5 V. Input thresholds scale with local VDD (VIH = 2.0 V at 5 V, 1.6 V at 3 V), and output voltages swing rail-to-rail relative to their respective supplies - enabling seamless logic-level bridging without external translators.
How does the programmable default output feature work on ADUM1311ARWZ-RL?
ADUM1311ARWZ-RL uses CTRL1 (Pin 13) and CTRL2 (Pin 5) to set fail-safe output states when either VDD1 or VDD2 is unpowered. Pulling CTRL2 high or low configures Channel C's default; CTRL1 similarly controls VOA/VOB. This ensures predictable behavior during power sequencing or brownout - a key requirement for SIL-2 functional safety paths.
What safety certifications apply to ADUM1311ARWZ-RL?
ADUM1311ARWZ-RL is certified to UL 1577 (2500 Vrms for 1 minute), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 560 Vpeak), IEC/EN/CSA 62368-1, EN 60950-1, IEC/CSA 60601-1, and IEC/CSA 61010-1. These approvals validate its suitability for reinforced insulation in medical, industrial, and test equipment applications.
Can ADUM1311ARWZ-RL replace optocouplers in existing designs without layout changes?
ADUM1311ARWZ-RL uses the same 16-lead SOIC wide-body footprint (RWZ) as many legacy optocouplers, but pin functions differ significantly. Direct replacement requires verification of signal directionality (2:1 vs. 1:1), disable/default control logic, and absence of external biasing. Migration is feasible but demands schematic and layout review - not drop-in.
ADUM1311ARWZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 100ns, 100ns
- Pulse Width Distortion (Max):
- 40ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM1311ARWZ-RL FAQ
1.How can I place an order for ADUM1311ARWZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1311ARWZ-RL 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 ADUM1311ARWZ-RL reliable?
The price and inventory of ADUM1311ARWZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1311ARWZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM1311ARWZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1311ARWZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1311ARWZ-RL?
ADUM1311ARWZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1311ARWZ-RL 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 ADUM1311ARWZ-RL?
For technical support, including ADUM1311ARWZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1311ARWZ-RL requirements.
6.How does Aetrix verify that ADUM1311ARWZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM1311ARWZ-RL 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 ADUM1311ARWZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM1311ARWZ-RL?
All ADUM1311ARWZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1311ARWZ-RL, 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 ADUM1311ARWZ-RL part is unused and in its original packaging.
Return procedure for ADUM1311ARWZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1311ARWZ-RL 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
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