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Analog Devices Inc. ADUM1201WTRZ-RL7
- Part No.:
- ADUM1201WTRZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1201WTRZ-RL7.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:278
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Product details
Overview
ADUM1201WTRZ-RL7 from Analog Devices is an automotive-grade dual-channel digital isolator based on iCoupler® transformer technology, providing galvanic isolation between two independent signal paths. It supports bidirectional communication, 3 V/5 V level translation, and operates up to 25 Mbps with ≤3 ns pulse width distortion and ≤3 ns channel-to-channel matching at 125°C. It is used in battery monitor systems and motor drive interfaces requiring high common-mode transient immunity (>25 kV/µs) and AEC-Q100 qualification.
For engineers reviewing the ADUM1201WTRZ-RL7 datasheet, ADUM1201WTRZ-RL7 pinout, ADUM1201WTRZ-RL7 application, or ADUM1201WTRZ-RL7 equivalent, key selection criteria include its 25 Mbps data rate, 125°C automotive qualification, SOIC-8 narrow-body package, and dual-channel bidirectional isolation architecture with guaranteed dc correctness via refresh feature.
Technical Context
The ADUM1201WTRZ-RL7 implements two independent unidirectional or bidirectional isolated channels using monolithic air-core transformers, eliminating LED/photodiode aging and CTR drift inherent in optocouplers. Its patented refresh circuit ensures dc-correct output during static input conditions and power-up/power-down sequences.
It supports asymmetric supply operation (e.g., 5 V on side 1, 3 V on side 2), enabling voltage-level translation across the isolation barrier. Propagation delay skew is ≤3 ns for codirectional channels and ≤15 ns for opposing-directional channels at 25 Mbps, with common-mode transient immunity exceeding 25 kV/µs under both logic-high and logic-low output conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute; VIORM = 560 VPEAK per DIN EN IEC 60747-17 (VDE 0884-17) |
| Max Data Rate | 25 Mbps (CR grade), supporting NRZ signaling without pulse width distortion degradation |
| Operating Temperature | −40°C to +125°C ambient, qualified per AEC-Q100 Grade 1 for automotive use |
| Supply Voltage Range | 2.7 V to 5.5 V per side, enabling mixed-voltage system interfacing (e.g., 3.3 V MCU ↔ 5 V peripheral) |
| Pulse Width Distortion | ≤3 ns maximum, ensuring timing integrity in clock-forwarding and synchronous serial protocols |
| Channel-to-Channel Matching | ≤3 ns for codirectional channels, critical for differential signaling and time-sensitive control loops |
| Common-Mode Transient Immunity | >25 kV/µs at both logic-high and logic-low outputs, maintaining signal fidelity in noisy motor drive environments |
Pinout & Package
Narrow-body RoHS-compliant SOIC-8 package (5.3 mm × 6.2 mm, 1.75 mm height), surface-mount, with creepage/clearance ≥5.5 mm per UL 1577 and IEC/EN/CSA 62368-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies power to Channel A input and Channel B output; accepts 2.7–5.5 V |
| GND1 | Primary-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| INA | Channel A input | Accepts CMOS-level signals referenced to GND1; drives isolated output OUTA |
| INB | Channel B input | Accepts CMOS-level signals referenced to GND1; drives isolated output OUTB |
| OUTA | Channel A output | CMOS-level output referenced to GND2; mirrors INA with isolation barrier timing specs |
| OUTB | Channel B output | CMOS-level output referenced to GND2; mirrors INB with isolation barrier timing specs |
| GND2 | Secondary-side ground reference | Return path for VDD2; galvanically isolated from GND1 |
| VDD2 | Secondary-side power supply | Supplies power to Channel A and B outputs; accepts 2.7–5.5 V, independent of VDD1 |
Key Features
| Feature | Design Value |
|---|---|
| Patented refresh circuit | Ensures dc-correct output during static input states and power transitions-no external watchdog or refresh logic required |
| Low-power operation at 25 Mbps | 6.3–8.0 mA per side at 12.5 MHz (CR grade), ~1/5 the power of comparable optocouplers |
| High-temperature reliability | Guaranteed 25 Mbps performance and <3 ns PWD at 125°C ambient, validated per AEC-Q100 stress tests |
| Level translation capability | Supports 3 V ↔ 5 V interface bridging without external level shifters, reducing BOM count and layout complexity |
| Regulatory compliance | UL 1577 (2500 VRMS), DIN EN IEC 60747-17 (VDE 0884-17), IEC/EN/CSA 62368-1, and CQC GB4943.1 certified |
Applications
| Battery Monitor Interface | SPI Isolation for Industrial PLC |
|---|---|
|
Use Scenario: Isolating cell voltage and temperature sensing signals from a high-voltage battery pack (e.g., 400–800 V EV battery) to a low-voltage MCU domain. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting analog-to-digital converter (ADC) readout and status flags across the isolation barrier with matched propagation delay. Use Value: Enables safe, accurate real-time monitoring while meeting IEC 62485-2 reinforced insulation requirements and surviving >25 kV/µs transients during contactor switching. |
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between a 3.3 V ARM Cortex-M7 controller and a 5 V isolated ADC in a programmable logic controller. IC Role / Device Role / Timing Role: Two ADUM1201WTRZ-RL7 devices provide full-duplex SPI isolation with sub-3 ns channel matching to preserve setup/hold timing margins. Use Value: Eliminates ground loop noise and prevents latch-up during ESD events, maintaining SPI frame integrity at 20 MHz SCLK without added timing margin. |
| Motor Drive Gate Driver Interface | RS-485 Transceiver Isolation |
|
Use Scenario: Isolating PWM enable and fault feedback signals between an isolated gate driver IC (e.g., ADuM4135) and a safety MCU in an inverter module. IC Role / Device Role / Timing Role: Bidirectional isolator conveying gate driver ready status and overcurrent fault pulses with <3 ns pulse width distortion. Use Value: Ensures fast, deterministic fault response (<100 ns latency) and prevents false triggering due to common-mode noise in high-di/dt switching environments. |
Use Scenario: Isolating RS-485 transceiver (e.g., ADM2483) control lines (RE, DE) and data lines (RO, DI) in a factory automation fieldbus node exposed to 4 kV EFT. IC Role / Device Role / Timing Role: Dual-channel isolator separating transceiver logic-side control and data paths from bus-side domains. Use Value: Prevents ground potential differences from corrupting communication and sustains 25 Mbps data throughput during 25 kV/µs transients induced by nearby VFDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8621ED-B-IS | Capacitive isolation; 25 Mbps max; 5000 VRMS rating; no refresh circuit; higher CMTI (75 kV/µs) | Preferred in high-CMTI industrial inverters; lacks automotive qualification and dc-correctness guarantee | Select when highest CMTI and UL 5000 VRMS are mandatory; verify dc stability in static-signal applications |
| ISO7721DWR | Capacitive isolation; 100 Mbps max; 5000 VRMS; AEC-Q100 Grade 0 (−40°C to +150°C); integrated LDO on secondary side | Used in next-gen ADAS domain controllers requiring higher speed and wider temp range; larger SOIC-16 package | Choose for future-proof designs needing >25 Mbps or integrated regulation; requires PCB redesign for SOIC-16 footprint |
Compared with SI8621ED-B-IS and ISO7721DWR, ADUM1201WTRZ-RL7 delivers optimal balance of automotive qualification, proven dc correctness, compact SOIC-8 footprint, and 25 Mbps performance-making it ideal for cost- and space-constrained battery management and motor control modules where reliability under static conditions is non-negotiable.
Availability
ADUM1201WTRZ-RL7 is available at Aetrix Electronics and suitable for battery monitoring, motor drive control, and industrial SPI isolation requiring stable component supply across automotive production lifecycles and extended-temperature industrial deployments.
Supply support for ADUM1201WTRZ-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 precision instrumentation, industrial automation, and automotive markets since 1965.
The ADuM1201WTRZ-RL7 belongs to Analog Devices' iCoupler® digital isolator product line, engineered specifically for automotive and industrial systems demanding robust galvanic isolation, low power, and guaranteed dc signal integrity without external refresh circuitry.
FAQ
What is the maximum guaranteed data rate for ADUM1201WTRZ-RL7 at 125°C?
The ADUM1201WTRZ-RL7 is rated for 25 Mbps maximum data rate at 125°C ambient temperature, as confirmed in Table 4 (Electrical Characteristics-5 V, 125°C Operation) of the Rev. L datasheet. This performance is guaranteed with ≤3 ns pulse width distortion and ≤3 ns channel-to-channel matching under full automotive temperature and voltage stress conditions.
Does ADUM1201WTRZ-RL7 support bidirectional signal flow on each channel?
No-ADUM1201WTRZ-RL7 has two unidirectional channels: INA→OUTA and INB→OUTB. However, it enables bidirectional system-level communication when paired with a second ADUM1201WTRZ-RL7 (or compatible isolator) for reverse-path signals. The device itself does not implement internal direction control or auto-sensing logic.
What safety certifications apply to ADUM1201WTRZ-RL7?
ADUM1201WTRZ-RL7 is certified to UL 1577 (2500 VRMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation, IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and CQC GB4943.1. Its VIORM of 560 VPEAK and minimum creepage/clearance meet reinforced insulation requirements for functional safety applications up to 400 V working voltage.
Can ADUM1201WTRZ-RL7 operate with different supply voltages on each side?
Yes-ADUM1201WTRZ-RL7 supports mixed-supply operation: VDD1 and VDD2 may independently range from 2.7 V to 5.5 V. For example, it can translate 3.3 V logic on the primary side (VDD1 = 3.3 V) to 5 V logic on the secondary side (VDD2 = 5 V), enabling seamless interface between low-voltage MCUs and legacy 5 V peripherals.
How does the refresh feature in ADUM1201WTRZ-RL7 ensure dc correctness?
The ADUM1201WTRZ-RL7 incorporates a patented internal refresh circuit that periodically samples the input state and retransmits it across the isolation barrier-even when the input is static. This guarantees correct dc output levels during power-up, power-down, and prolonged logic-high or logic-low conditions, eliminating the need for external refresh pulses or watchdog timers required by competing isolators.
ADUM1201WTRZ-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:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1201WTRZ-RL7 FAQ
1.How can I place an order for ADUM1201WTRZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1201WTRZ-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 ADUM1201WTRZ-RL7 reliable?
The price and inventory of ADUM1201WTRZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1201WTRZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM1201WTRZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1201WTRZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1201WTRZ-RL7?
ADUM1201WTRZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1201WTRZ-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 ADUM1201WTRZ-RL7?
For technical support, including ADUM1201WTRZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1201WTRZ-RL7 requirements.
6.How does Aetrix verify that ADUM1201WTRZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM1201WTRZ-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 ADUM1201WTRZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM1201WTRZ-RL7?
All ADUM1201WTRZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1201WTRZ-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 ADUM1201WTRZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM1201WTRZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1201WTRZ-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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