ADUM1201ARZ-RL7 - Dual-Channel Digital Isolator 2500Vrms | Analog Devices
MPN: ADUM1201ARZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
ADUM1201ARZ-RL7 Overview
A digital isolator is a component that transfers digital signals across a galvanic isolation barrier without allowing direct current flow. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS to achieve higher data rates, lower power consumption, and more stable performance over temperature and lifetime. Digital isolators are essential in systems where ground potential differences, noise, or safety requirements demand isolation, such as in industrial automation, medical equipment, and data acquisition.
Key features of the ADUM1201ARZ-RL7 include 1/1 channel directionality (one forward channel and one reverse channel), which is ideal for bidirectional communication. The device delivers 2500Vrms isolation voltage, 1Mbps data rate, and 25kV/µs CMTI, ensuring reliable operation in noisy environments. The wide supply range supports both 3.3V and 5V logic levels, and the typical quiescent current is only 1.3mA per channel, making it suitable for power-sensitive applications.
Technically, the ADuM1201 combines high-speed CMOS and monolithic transformer isolation in an 8-lead SOIC package. This architecture eliminates the need for external drivers and discrete components, reducing board space and improving reliability. Unlike optocouplers, iCoupler technology does not suffer from current transfer ratio degradation, providing stable isolation performance throughout the product lifetime.
Typical applications include industrial automation for isolating field buses and sensor interfaces, medical devices where patient safety requires galvanic isolation, and data acquisition systems to prevent ground loops and noise. It is also used in power supply control, motor drives, and communication interfaces.
When designing with this device, place bypass capacitors close to the VDD1 and VDD2 pins and maintain proper PCB spacing across the isolation barrier to preserve creepage and clearance requirements. The high CMTI rating makes the part robust in fast-switching environments, but careful layout is still required to maximize isolation performance.
Drop-in alternatives for ADUM1201ARZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADUM1201ARZ-RL7 (same form factor and footprint) — differing in Common-Mode Transient Immunity (CMTI), Isolation Voltage, Operating Temperature Range, RoHS Status, Technology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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ADUM1201ARZ-RL7
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →ADUM1201ARZ-RL7 Specifications
| Number of Channels | 2 |
| Channel Directionality | 1/1 (one forward, one reverse) |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1) | 3.0 V to 5.5 V |
| Supply Voltage (VDD2) | 3.0 V to 5.5 V |
| Quiescent Current (per channel) | 1.3 mA typical |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC (0.154", 3.90mm width) |
| Mounting Type | Surface Mount |
| Technology | iCoupler (monolithic transformer) |
| RoHS Status | Compliant |
ADUM1201ARZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Supply voltage for side 1 |
| Pin 2 | GND1 — Ground for side 1 |
| Pin 3 | VIA — Input for channel A (side 1) |
| Pin 4 | VOA — Output for channel A (side 1) |
| Pin 5 | VOB — Output for channel B (side 2) |
| Pin 6 | VIB — Input for channel B (side 2) |
| Pin 7 | GND2 — Ground for side 2 |
| Pin 8 | VDD2 — Supply voltage for side 2 |
Typical Applications
ADUM1201ARZ-RL7 is suitable for 6 applications: Industrial Automation, Medical Devices, Data Acquisition Systems, Power Supply Control, Motor Drives, Communication Interfaces.
Industrial Automation
The ADUM1201ARZ-RL7 is ideal for isolating field buses and sensor interfaces in industrial automation. Its 2500Vrms isolation protects low-voltage control logic from high-voltage transients and ground loops. The 1Mbps data rate is sufficient for most industrial protocols like Modbus and CAN. The high CMTI of 25kV/µs ensures reliable operation in noisy factory environments with motor drives and inverters. The wide temperature range (-40°C to +125°C) suits harsh industrial conditions. By using iCoupler technology, it avoids the aging and nonlinearity issues of optocouplers, providing stable performance over time.
Recommended
Medical Devices
In medical devices, patient safety requires galvanic isolation between the patient-connected parts and the mains-connected parts. The ADUM1201ARZ-RL7 provides 2500Vrms isolation, which is suitable for basic isolation in many medical monitoring and diagnostic devices. Its low quiescent current (1.3mA per channel) is beneficial for battery-powered portable medical equipment. The 1Mbps data rate is adequate for transmitting vital sign signals like ECG and SpO2. The device's stable performance over temperature and lifetime, unlike optocouplers, ensures reliable long-term operation in critical medical applications. Always verify compliance with IEC 60601 standards for specific medical applications.
Recommended
Data Acquisition Systems
The ADUM1201ARZ-RL7 is used in data acquisition systems to prevent ground loops and noise between sensors and the ADC. Its 2500Vrms isolation breaks ground loops that can introduce measurement errors. The 1Mbps data rate is sufficient for sampling rates up to 100kSPS with 12-bit resolution. The high CMTI ensures that fast transients on the sensor side do not corrupt the digital signal. The device's low power consumption is advantageous in multi-channel systems where many isolators are used. By isolating the analog front end from the digital processing side, the ADUM1201ARZ-RL7 improves overall system accuracy and reliability.
Recommended
Power Supply Control
In power supply control, the ADUM1201ARZ-RL7 isolates the control circuitry from the high-voltage power stage. Its 2500Vrms isolation protects the low-voltage controller from high-voltage transients. The 1Mbps data rate is sufficient for transmitting PWM signals and fault status. The high CMTI of 25kV/µs ensures reliable operation in the presence of fast-switching transients from the power stage. The device's low propagation delay (though not specified in the provided data) is critical for maintaining loop stability. The wide supply range (3.0V to 5.5V) allows interfacing with various controller logic levels. This isolator is commonly used in AC-DC and DC-DC converters.
Recommended
Motor Drives
The ADUM1201ARZ-RL7 is used in motor drives to isolate the gate driver signals from the microcontroller. Its 2500Vrms isolation protects the low-voltage control side from the high-voltage motor side. The 1Mbps data rate is sufficient for PWM signals up to 20kHz with reasonable resolution. The high CMTI of 25kV/µs is essential in motor drives where fast-switching IGBTs or MOSFETs generate high dv/dt transients. The device's wide temperature range (-40°C to +125°C) suits the harsh thermal environment of motor drives. By using iCoupler technology, it provides more reliable isolation than optocouplers, which can degrade over time.
Recommended
Communication Interfaces
The ADUM1201ARZ-RL7 is used in communication interfaces to isolate the transceiver from the controller. Its 2500Vrms isolation prevents ground potential differences from disrupting communication. The 1Mbps data rate is suitable for protocols like RS-485, CAN, and SPI. The device's 1/1 channel directionality is ideal for bidirectional communication links. The high CMTI ensures reliable data transmission in noisy environments. The low quiescent current is beneficial for power-sensitive communication nodes. By isolating the communication lines, the ADUM1201ARZ-RL7 improves system reliability and protects against voltage surges.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1201ARZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1201ARZ | ADUM1201BRZ-RL7 | ADUM1201CRZ | ADUM1201WURZ |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 25 Mbps | 1 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Channel Directionality | 1/1 | 1/1 | 1/1 | 1/1 | 1/1 |
| Automotive Grade | No | No | No | No | Yes (AEC-Q100) |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tube | Tube |
Key Differentiators
- iCoupler technology vs optocouplers (vs Optocoupler-based isolators)
- 1/1 channel directionality (vs ADUM1200ARZ-RL7 (2/0))
- Low power consumption (vs Optocoupler-based isolators)
Design Notes
Place 0.1µF bypass capacitors as close as possible to the VDD1 and VDD2 pins, with a low-impedance path to the respective ground pins. Additionally, a 10µF bulk capacitor on each supply is recommended if the power source is far from the device. This ensures stable operation and reduces noise coupling.
Maintain proper creepage and clearance distances across the isolation barrier. For 2500Vrms isolation, a minimum creepage of 4mm is recommended for basic isolation, but check the specific safety standard requirements for your application. Avoid routing any copper traces under the isolation barrier to preserve isolation integrity.
Do not exceed the absolute maximum ratings for supply voltage (7V) or input/output voltages. Ensure that the input signals do not exceed the supply voltage by more than 0.5V. Also, avoid floating unused inputs; tie them to a defined logic level to prevent oscillation and excessive current draw.
Compliance Information
RoHS compliant per distributor data. Not AEC-Q100 qualified; use ADUM1201WURZ for automotive.
