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Analog Devices Inc. ADUM1201WSRZ-RL7
- Part No.:
- ADUM1201WSRZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1201WSRZ-RL7.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
ADUM1201WSRZ-RL7 from Analog Devices is a dual-channel, automotive-grade digital isolator based on iCoupler® transformer technology, providing galvanic isolation with 2500 VRMS withstand voltage, 25 Mbps data rate (CR grade), and operation up to 125°C. It supports bidirectional signal transmission across the isolation barrier with 3 V/5 V level translation and delivers <3 ns pulse width distortion for precise timing-critical applications such as motor drive control and battery monitoring.
For engineers reviewing the ADUM1201WSRZ-RL7 datasheet, ADUM1201WSRZ-RL7 pinout, ADUM1201WSRZ-RL7 application, or ADUM1201WSRZ-RL7 equivalent, this page provides verified specifications, package mapping, channel configuration details, safety certifications (UL 1577, VDE 0884-17), and real-world use context for industrial and automotive isolation design.
Technical Context
The ADUM1201WSRZ-RL7 implements two independent unidirectional isolation channels using monolithic air-core transformers, eliminating LED/photodiode aging and CTR drift inherent in optocouplers. Its patented refresh circuit ensures DC correctness during idle periods and power transitions without external components.
It operates across 2.7 V to 5.5 V on both sides, enabling mixed-voltage interfaces (e.g., 3.3 V MCU to 5 V bus), and features high common-mode transient immunity (>25 kV/µs) with tight channel-to-channel matching (<3 ns) - critical for synchronized sampling in isolated ADC interfaces and SPI-based sensor networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute; enables reinforced insulation per IEC/EN/CSA 62368-1 and IEC/CSA 61010-1 in safety-critical systems. |
| Max Data Rate | 25 Mbps (CR grade); supports high-speed SPI clocking and real-time CAN FD auxiliary signaling without timing degradation. |
| Pulse Width Distortion | <3 ns; preserves duty cycle integrity for PWM feedback loops and encoder signal conditioning in motor drives. |
| Channel-to-Channel Matching | <3 ns; ensures synchronous edge alignment between isolated control and feedback paths in dual-loop power converters. |
| Operating Temperature | −40°C to +125°C; qualified per AEC-Q100 Grade 1, suitable for under-hood automotive electronics and industrial inverters. |
| Supply Voltage Range | 2.7 V to 5.5 V on both sides; allows direct interfacing between 3.3 V microcontrollers and 5 V legacy peripherals without level shifters. |
| Common-Mode Transient Immunity | >25 kV/µs; maintains signal integrity in noisy environments like EV battery management systems with fast-switching SiC MOSFETs. |
Pinout & Package
Narrow-body SOIC-8 (SO-8) package, RoHS-compliant, creepage/clearance ≥ 5.5 mm, rated VIORM = 560 VPEAK per DIN EN IEC 60747-17 (VDE 0884-17).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD1) | Primary-side supply | Power input for Channel A input and Channel B output side; accepts 2.7–5.5 V for flexible voltage domain bridging. |
| 2 (GND1) | Primary-side ground | Reference for inputs IA, IB and outputs OA, OB on primary side; must be separated from secondary ground to maintain isolation. |
| 3 (IA) | Channel A input | Unidirectional logic input referenced to VDD1/GND1; drives isolated output OA on secondary side. |
| 4 (IB) | Channel B input | Unidirectional logic input referenced to VDD1/GND1; drives isolated output OB on secondary side. |
| 5 (OA) | Channel A output | Isolated output driven by IA; referenced to VDD2/GND2; supports CMOS-compatible levels at VDD2 voltage. |
| 6 (OB) | Channel B output | Isolated output driven by IB; referenced to VDD2/GND2; enables dual-signal isolation in compact space-constrained layouts. |
| 7 (GND2) | Secondary-side ground | Reference for outputs OA, OB and inputs on secondary side; electrically isolated from GND1. |
| 8 (VDD2) | Secondary-side supply | Power input for Channel A output and Channel B input side; independently configurable for level translation. |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Replaces optocouplers with stable, temperature-invariant performance and no LED degradation over lifetime. |
| Patented refresh circuit | Maintains correct DC output state during static input conditions and power-up/power-down sequences without external supervision. |
| Bidirectional capability via pin pairing | Enables full-duplex communication (e.g., SPI MISO/MOSI) using two unidirectional channels in opposite directions. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including battery monitors, motor controllers, and charging systems operating at 125°C ambient. |
| Low dynamic power consumption | 6.3 mA per side at 25 Mbps (VDD1=VDD2=5 V); reduces thermal load in sealed enclosures and extends system efficiency. |
Applications
| Motor Drive Control | SPI Isolation for Precision ADCs |
|---|---|
|
Use Scenario: Isolating gate driver enable signals and current-sense feedback in 400 V–800 V traction inverters. IC Role / Device Role / Timing Role: Dual-channel isolator providing independent, low-skew paths for PWM control and analog feedback sampling synchronization. Use Value: Enables safe, high-fidelity current measurement with <3 ns channel matching to avoid sampling window misalignment in dual-shunt configurations. |
Use Scenario: Isolating serial interface between isolated precision ADC (e.g., AD7403) and host MCU in energy metering systems. IC Role / Device Role / Timing Role: Transmitting SPI clock and data across isolation barrier while preserving timing margins for 16-bit conversion cycles. Use Value: Supports 25 Mbps operation to sustain >1 MSPS throughput without protocol overhead, reducing latency in closed-loop power regulation. |
| Automotive Battery Monitoring | RS-485 Transceiver Isolation |
|
Use Scenario: Signal isolation between BMS controller and cell voltage monitoring ICs in high-voltage EV battery packs. IC Role / Device Role / Timing Role: Providing reinforced isolation for UART or I²C communication links exposed to high dv/dt transients during contactor switching. Use Value: Withstands >25 kV/µs common-mode transients during pack switching events, preventing data corruption in SOC estimation algorithms. |
Use Scenario: Isolating RS-485 transceivers in industrial fieldbus nodes connected to variable frequency drives. IC Role / Device Role / Timing Role: Breaking ground loops and protecting master controller from bus faults while maintaining full-duplex communication. Use Value: Enables robust multi-drop communication in noisy factory environments with 2500 VRMS isolation and 125°C operation for extended reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8621ED-IS | Capacitive isolation; 25 Mbps max; 5000 VRMS rating; different pinout (SOIC-8 but channel assignment differs). | Higher isolation voltage but lacks AEC-Q100 qualification; not recommended for automotive under-hood use. | Select when higher isolation voltage is required and automotive qualification is unnecessary. |
| ISO7721DR | Capacitive isolation; 100 Mbps max; 5000 VRMS; 125°C operation; requires external VDD decoupling per side. | Higher speed and isolation rating, but higher quiescent current (1.5 mA/channel @ 0 Mbps) vs. ADUM1201WSRZ-RL7's 0.8 mA/channel. | Prefer for new designs needing >25 Mbps or tighter EMI control; verify PCB layout compatibility due to different decoupling requirements. |
Compared with SI8621ED-IS and ISO7721DR, ADUM1201WSRZ-RL7 offers AEC-Q100 qualification, lower static power at 25 Mbps, and proven transformer-based noise immunity in high-dv/dt motor control - making it optimal for automotive and industrial isolation where reliability under transient stress is non-negotiable.
Availability
ADUM1201WSRZ-RL7 is available at Aetrix Electronics and suitable for automotive battery management, motor drive control, and isolated SPI/UART interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADUM1201WSRZ-RL7 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADuM1201W series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for high-reliability, high-temperature isolation in automotive and industrial systems where optocoupler limitations in speed, power, and lifetime must be overcome.
FAQ
What is the maximum data rate supported by ADUM1201WSRZ-RL7?
The ADUM1201WSRZ-RL7 supports up to 25 Mbps in CR grade configuration, as confirmed in the Rev. L datasheet Table 1 and Table 5. This maximum rate is guaranteed with ≤3 ns pulse width distortion and applies under 5 V or 3 V supply conditions at temperatures up to 125°C. The part does not support 50 Mbps - that specification applies only to non-automotive ADUM1201CR variants.
Does ADUM1201WSRZ-RL7 support bidirectional communication on a single channel?
No, ADUM1201WSRZ-RL7 contains two unidirectional isolation channels. Bidirectional protocols like SPI require cross-connecting IA→OB and IB→OA (or vice versa) to achieve full-duplex operation. This configuration is explicitly validated in the ADuM1200/ADuM1201 datasheet Figure 2 and Applications Information section.
What safety certifications does ADUM1201WSRZ-RL7 hold?
ADUM1201WSRZ-RL7 is certified to UL 1577 (2500 VRMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 560 VPEAK), IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and CQC GB4943.1. These are listed in the Regulatory Information section of the Rev. L datasheet and apply to the W-grade automotive variant.
Can ADUM1201WSRZ-RL7 operate with different supply voltages on each side?
Yes, ADUM1201WSRZ-RL7 supports mixed-supply operation: 3 V/5 V or 5 V/3 V configurations are fully characterized in Tables 3 and 5 of the Rev. L datasheet. For example, VDD1 = 3.3 V and VDD2 = 5 V enables level translation from a low-voltage MCU to a 5 V transceiver without external logic buffers.
Is ADUM1201WSRZ-RL7 pin-compatible with non-automotive ADUM1201 variants?
Yes, ADUM1201WSRZ-RL7 uses the same SOIC-8 package and pinout as ADUM1201AR/BR/CR variants. Pin functions (IA, IB, OA, OB, VDD1, VDD2, GND1, GND2) match identically per Figure 25 in the Rev. L datasheet, enabling drop-in replacement where AEC-Q100 qualification and 125°C operation are required.
ADUM1201WSRZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 150ns, 150ns
- Pulse Width Distortion (Max):
- 40ns
- Rise / Fall Time (Typ):
- 10ns, 10ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1201WSRZ-RL7 FAQ
1.How can I place an order for ADUM1201WSRZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1201WSRZ-RL7 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 ADUM1201WSRZ-RL7 reliable?
The price and inventory of ADUM1201WSRZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1201WSRZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM1201WSRZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1201WSRZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1201WSRZ-RL7?
ADUM1201WSRZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1201WSRZ-RL7 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 ADUM1201WSRZ-RL7?
For technical support, including ADUM1201WSRZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1201WSRZ-RL7 requirements.
6.How does Aetrix verify that ADUM1201WSRZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM1201WSRZ-RL7 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 ADUM1201WSRZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM1201WSRZ-RL7?
All ADUM1201WSRZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1201WSRZ-RL7, 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 ADUM1201WSRZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM1201WSRZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1201WSRZ-RL7 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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