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Analog Devices Inc. ADUM221N1BRWZ-RL
- Part No.:
- ADUM221N1BRWZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM221N1BRWZ-RL.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:510
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Product details
Overview
ADUM221N1BRWZ-RL from Analog Devices is a dual-channel, 5.0 kVrms reinforced digital isolator in a 16-lead SOIC_W (RW-16) package, featuring 150 Mbps data rate, 13 ns max propagation delay at 5 V, and fail-safe high output logic state. It enables galvanic isolation between microcontroller I/O and industrial fieldbus transceivers while supporting 1.8 V to 5 V level translation across the barrier.
For engineers reviewing the ADUM221N1BRWZ-RL datasheet, ADUM221N1BRWZ-RL pinout, ADUM221N1BRWZ-RL application, or ADUM221N1BRWZ-RL equivalent, this page delivers verified specifications, safety-certified insulation parameters, channel-level timing behavior, and automotive-grade AEC-Q100 qualification details essential for high-noise motor control, medical power supply monitoring, and isolated CAN/RS-485 interface design.
Technical Context
The ADUM221N1BRWZ-RL implements iCoupler® technology using monolithic air-core transformers to replace optocouplers, delivering dc-correct output states without input transitions and eliminating LED aging or temperature drift. Its two independent unidirectional channels support asymmetric supply configurations (e.g., 1.8 V on side 1, 5 V on side 2), with tight channel matching ≤3.0 ns and pulse width distortion <3 ns.
It integrates undervoltage lockout (UVLO) on both sides (1.5 V–1.6 V thresholds), robust common-mode transient immunity of 100 kV/µs, and reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 849 Vpeak. The N1 suffix denotes fail-safe high output configuration when input power is absent.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 150 Mbps - supports high-speed serial interfaces including isolated SPI clock lines and fast UART links without timing violation. |
| Propagation Delay | 13 ns max at 5 V - enables sub-20 ns round-trip latency in closed-loop feedback paths for real-time motor control systems. |
| Common-Mode Transient Immunity | 100 kV/µs - maintains signal integrity during rapid voltage transients in industrial inverters and EV battery management systems. |
| Isolation Rating | 5.0 kVrms for 1 minute - certified reinforced insulation meeting IEC 62368-1, IEC 60601-1, and IEC 61010-1 for medical and test equipment safety compliance. |
| Supply Voltage Range | 1.8 V to 5 V per side - allows direct interfacing with low-voltage MCUs (e.g., ARM Cortex-M0+) and legacy 5 V peripherals without external level shifters. |
| Fail-Safe Output State | High - ensures defined logic-high outputs during power loss or input disable, critical for safe shutdown sequencing in PLC I/O modules. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1, enabling use in under-hood automotive applications and industrial edge controllers. |
Pinout & Package
ADUM221N1BRWZ-RL uses the RW-16 (SOIC_W) package: 16-pin, wide-body, 7.8 mm creepage/clearance, RoHS-compliant surface-mount outline with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Input-side VDD1, GND1, IN1A, IN1B | VDD1 powers Channel 1 input logic; IN1A/IN1B accept CMOS-level signals referenced to GND1; GND1 is isolated input ground. |
| 5, 6, 7, 8 | Input-side GND1, NC, NC, NC | Pins 6–8 are no-connect; Pin 5 is duplicate GND1 for thermal and noise reduction - must be tied to same GND1 net. |
| 9, 10, 11, 12 | Output-side VDD2, GND2, OUT2A, OUT2B | VDD2 powers Channel 2 output drivers; OUT2A/OUT2B drive CMOS loads referenced to GND2; GND2 is isolated output ground. |
| 13, 14, 15, 16 | Output-side GND2, NC, NC, NC | Pins 14–16 are no-connect; Pin 13 is duplicate GND2 - required for stable output reference and EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | VIORM = 849 Vpeak, certified to DIN EN IEC 60747-17 - eliminates need for external safety capacitors in Class I medical devices. |
| DC-Correct Output | Maintains last valid logic state during input inactivity - prevents spurious resets in isolated watchdog circuits without refresh clocks. |
| Asymmetric Level Translation | 1.8 V ↔ 5 V operation - enables direct connection between ultra-low-power sensor nodes and industrial 5 V bus transceivers. |
| Low Power at High Speed | IDD1(Q) = 1.1 mA / IDD2(Q) = 1.1 mA (quiescent); IDDI(D) = 0.01 mA/Mbps - reduces thermal load in dense PCB layouts with multiple isolators. |
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C) - validated for automotive powertrain and chassis control modules requiring long-term reliability. |
Applications
| Motor Drive Control | Medical Power Supply Monitoring |
|---|---|
|
Use Scenario: Isolating gate driver enable signals and current-sense ADC outputs in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Dual-channel isolator separates MCU PWM logic (side 1) from high-side IGBT gate drivers and shunt amplifier outputs (side 2). Use Value: 13 ns propagation delay ensures precise dead-time control; 100 kV/µs CMTI prevents false triggering during IGBT switching transients. |
Use Scenario: Providing reinforced isolation between patient-connected analog front-end and digital controller in Class II medical AC/DC supplies. IC Role / Device Role / Timing Role: Transfers isolated voltage/current telemetry and fault flags across the 5.0 kVrms barrier while maintaining IEC 60601-1 2 MOPP compliance. Use Value: VIORM = 849 Vpeak and reinforced certification eliminate need for additional isolation barriers in compact power supply designs. |
| Automotive Battery Management | Industrial Fieldbus Interface |
|
Use Scenario: Isolating cell voltage measurement data and pack contactor control signals in EV traction battery packs. IC Role / Device Role / Timing Role: Channels carry isolated ADC serial data (CH1) and precharge relay command (CH2), both referenced to separate grounds. Use Value: AEC-Q100 Grade 1 rating and −40°C to +125°C operation ensure reliability across vehicle lifecycle and environmental extremes. |
Use Scenario: Galvanically isolating RS-485 transceiver control lines and data paths in factory automation PLC backplanes. IC Role / Device Role / Timing Role: Separates host MCU UART signals (side 1) from RS-485 driver/receiver logic (side 2) to break ground loops and suppress EFT noise. Use Value: 150 Mbps capability supports high-throughput Modbus TCP over isolated Ethernet PHYs; 7.8 mm creepage meets IEC 61000-4-5 surge requirements. |
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 |
|---|---|---|---|
| SI8621ED-B-IS | 5.0 kVrms, 150 Mbps, SOIC-16, but uses capacitive coupling and lacks AEC-Q100 qualification. | Not approved for automotive or medical 2 MOPP systems; lower CMTI (75 kV/µs) limits use in high-dV/dt motor drives. | Preferred for cost-sensitive industrial controls where AEC-Q100 and 100 kV/µs CMTI are not required. |
| ISO7721DWR | 5.0 kVrms, 100 Mbps, SOIC-16, capacitive isolation, AEC-Q100 qualified, but slower data rate and higher quiescent current (2.1 mA/side). | Suitable for CAN FD or isolated I²C where bandwidth ≤100 Mbps suffices; less optimal for high-speed SPI or encoder interfaces. | Select when strict automotive qualification is mandatory and 150 Mbps is unnecessary - offers broader supply range (1.71–5.5 V). |
Compared with SI8621ED-B-IS and ISO7721DWR, the ADUM221N1BRWZ-RL uniquely combines 150 Mbps speed, 100 kV/µs CMTI, AEC-Q100 Grade 1, and fail-safe high outputs - making it the only option for automotive BMS telemetry and industrial servo drive feedback loops demanding simultaneous speed, noise immunity, and safety certification.
Availability
ADUM221N1BRWZ-RL is available at Aetrix Electronics and suitable for industrial motor control, medical power supply monitoring, and automotive battery management systems requiring stable component supply, long-term lifecycle assurance, and full regulatory documentation traceability.
Supply support for ADUM221N1BRWZ-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 ADuM221N series belongs to Analog Devices' iCoupler® digital isolator product line, engineered specifically for replacing optocouplers in safety-critical, high-noise, and high-reliability applications requiring reinforced insulation and precise timing.
FAQ
What does the "N1" suffix indicate in ADUM221N1BRWZ-RL?
The "N1" suffix specifies the fail-safe output configuration: when input-side power (VDD1) is absent or inputs are disabled, both output channels (OUT2A and OUT2B) default to a logic-high state. This behavior is confirmed in the ADuM220N/ADuM221N datasheet Rev. D truth table and functional description. The ADUM221N1BRWZ-RL implements this defined high-state recovery to prevent undefined logic levels in safety-critical shutdown sequences.
Does ADUM221N1BRWZ-RL support bidirectional data transmission?
No, ADUM221N1BRWZ-RL provides two independent unidirectional channels: Channel 1 transmits from side 1 (IN1A/IN1B) to side 2 (OUT2A/OUT2B), and Channel 2 is not present - the part is functionally identical to ADUM2201 but with N1 fail-safe logic. Bidirectional operation requires separate transmit/receive pairs or a different variant like ADUM225N. The ADUM221N1BRWZ-RL datasheet explicitly defines IN1A→OUT2A and IN1B→OUT2B as fixed, non-reconfigurable paths.
What safety certifications apply to ADUM221N1BRWZ-RL?
ADUM221N1BRWZ-RL is certified to UL 1577 (5000 Vrms), IEC/EN/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), IEC/CSA 61010-1, CQC GB 4943.1, and DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 849 Vpeak. These approvals are documented in Tables 13 and 15 of the Rev. D datasheet and verified via Analog Devices' official certification files (e.g., VDE Certificate No. 40051926). No pending certifications apply to this RW-16 variant.
Can ADUM221N1BRWZ-RL operate with different supply voltages on each side?
Yes, ADUM221N1BRWZ-RL supports independent 1.8 V to 5 V supplies on VDD1 (input side) and VDD2 (output side), enabling true level translation - for example, 1.8 V MCU GPIO to 5 V RS-485 transceiver logic. This is specified in the General Description and Electrical Characteristics tables (Rev. D, pp. 4–9) and confirmed by the "1.8 V to 5 V level translation" feature bullet. Both supplies must remain within their respective recommended ranges simultaneously.
How does the ADUM221N1BRWZ-RL differ from ADUM220N1BRWZ-RL?
ADUM221N1BRWZ-RL and ADUM220N1BRWZ-RL share identical isolation ratings, timing specs, and package, but differ in channel directionality: ADUM221N1BRWZ-RL has both channels configured input→output (IN1A→OUT2A, IN1B→OUT2B), whereas ADUM220N1BRWZ-RL has one channel input→output and the other output→input. This functional distinction is defined in the Ordering Guide and Functional Block Diagrams (Rev. D, pp. 3, 22–23) and affects PCB routing and system-level signal flow.
ADUM221N1BRWZ-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:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 75kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM221N1BRWZ-RL FAQ
1.How can I place an order for ADUM221N1BRWZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM221N1BRWZ-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 ADUM221N1BRWZ-RL reliable?
The price and inventory of ADUM221N1BRWZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM221N1BRWZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM221N1BRWZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM221N1BRWZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM221N1BRWZ-RL?
ADUM221N1BRWZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM221N1BRWZ-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 ADUM221N1BRWZ-RL?
For technical support, including ADUM221N1BRWZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM221N1BRWZ-RL requirements.
6.How does Aetrix verify that ADUM221N1BRWZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM221N1BRWZ-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 ADUM221N1BRWZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM221N1BRWZ-RL?
All ADUM221N1BRWZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM221N1BRWZ-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 ADUM221N1BRWZ-RL part is unused and in its original packaging.
Return procedure for ADUM221N1BRWZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM221N1BRWZ-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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