ADUM1201BRZ-RL7 - Dual-Channel Digital Isolator | Analog Devices
MPN: ADUM1201BRZ-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 | $1.85 | $1,850.00 |
ADUM1201BRZ-RL7 Overview
Digital isolators are components that transfer digital signals across an isolation barrier, preventing DC current flow while allowing AC signals to pass. They are essential in systems where safety, noise immunity, or ground potential differences are concerns. The ADUM1201BRZ-RL7 uses monolithic transformer technology, which offers superior performance compared to traditional optocouplers, including higher data rates, lower power consumption, and better reliability.
Key features of the ADUM1201BRZ-RL7 include its 1/1 channel directionality (one forward, one reverse), a wide supply voltage range of 3.0V to 5.5V, and a propagation delay of typically 50ns. The device also features a high CMTI of 25kV/µs, ensuring reliable operation in noisy industrial environments. Its low power consumption and small package make it ideal for battery-powered and portable applications.
The ADUM1201BRZ-RL7 is designed using Analog Devices' iCoupler technology, which integrates micro-transformers and high-speed CMOS circuits on a single chip. This architecture eliminates the need for external components and provides a robust isolation solution. The device meets various safety standards, including DIN EN 60950, and is RoHS compliant.
Typical applications include motor drives, battery monitors, hybrid electric vehicles, and digital fieldbus isolation. In motor drives, the isolator protects control circuits from high-voltage transients. In battery monitoring, it ensures safe communication between cells and the controller. The device's high CMTI and data rate make it suitable for industrial automation and communication interfaces.
When designing with the ADUM1201BRZ-RL7, it is important to ensure proper PCB layout to maintain isolation performance. Keep the isolation barrier clear of copper traces and place decoupling capacitors close to the supply pins. Also, consider the propagation delay and timing requirements of your system to avoid data corruption.
Drop-in alternatives for ADUM1201BRZ-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 ADUM1201BRZ-RL7 (same form factor and footprint) — differing in Channel Directionality, Data Rate, Operating Temperature Range, Quiescent Current (per channel).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM1201BRZ
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →ADUM1201CRZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1201WTRZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1201WSRZ55-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7721D
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ISO7721DR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM1201BRZ-RL7 Specifications
| Number of Channels | 2 |
| Channel Directionality | 1/1 (one forward, one reverse) |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 10 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Propagation Delay | 50 ns (typical) |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Operating Temperature Range | -40°C to +125°C |
| RoHS Status | Compliant |
| Safety Approvals | DIN EN 60950 |
| Technology | iCoupler (monolithic transformer) |
| Mounting Type | Surface Mount |
| Number of Pins | 8 |
| Output Type | Digital |
ADUM1201BRZ-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 | VOB — Output for channel B (side 1) |
| Pin 5 | VIB — Input for channel B (side 2) |
| Pin 6 | VOA — Output for channel A (side 2) |
| Pin 7 | GND2 — Ground for side 2 |
| Pin 8 | VDD2 — Supply voltage for side 2 |
Typical Applications
ADUM1201BRZ-RL7 is suitable for 6 applications: Motor Drives, Battery Monitors, Hybrid Electric Vehicles, Digital Fieldbus Isolation, Industrial Automation, Power Supplies.
Motor Drives
The ADUM1201BRZ-RL7 provides galvanic isolation between the microcontroller and power stage in motor drives. Its 2500Vrms isolation and 25kV/µs CMTI ensure reliable communication in high-voltage, noisy environments. The 10Mbps data rate supports fast PWM signals, while the 1/1 channel configuration allows bidirectional control and feedback. This isolator protects low-voltage control circuits from high-voltage transients, improving system safety and reliability.
Recommended
Battery Monitors
In battery monitoring systems, the ADUM1201BRZ-RL7 isolates the battery stack from the control electronics, preventing ground loops and ensuring accurate voltage measurements. Its low propagation delay (50ns) and high CMTI (25kV/µs) enable reliable data transfer even in the presence of switching noise from DC-DC converters. The wide supply range (3.0V to 5.5V) allows interfacing with various battery management ICs. This isolator is essential for safe and accurate monitoring in electric vehicles and energy storage systems.
Recommended
Hybrid Electric Vehicles
The ADUM1201BRZ-RL7 is used in hybrid electric vehicles (HEVs) to isolate communication between the high-voltage battery and the low-voltage control unit. Its automotive-grade variants (ADUM1201WTRZ-RL7) meet AEC-Q100 requirements, ensuring reliability in harsh automotive environments. The 2500Vrms isolation and 10Mbps data rate support CAN and SPI interfaces, while the compact SOIC-8 package saves PCB space. This isolator enhances safety by preventing high-voltage transients from reaching sensitive electronics.
Recommended
Digital Fieldbus Isolation
The ADUM1201BRZ-RL7 provides isolation for digital fieldbus interfaces such as RS-485, CAN, and SPI. Its 10Mbps data rate and 50ns propagation delay ensure minimal signal distortion, while the 2500Vrms isolation protects against ground potential differences and electrical noise. The 1/1 channel configuration is ideal for bidirectional communication links. This isolator is widely used in industrial automation, building control, and process control systems where reliable data transmission is critical.
Recommended
Industrial Automation
In industrial automation, the ADUM1201BRZ-RL7 isolates PLCs, sensors, and actuators from high-voltage power circuits. Its high CMTI (25kV/µs) ensures reliable operation in environments with fast voltage transients, such as motor drives and power converters. The wide supply voltage range (3.0V to 5.5V) allows integration with various logic levels. The device's small SOIC-8 package and low power consumption make it suitable for compact control modules. This isolator improves system reliability and safety in factory automation.
Recommended
Power Supplies
The ADUM1201BRZ-RL7 is used in power supply designs to isolate feedback signals and control signals across the isolation barrier. Its 2500Vrms isolation and 10Mbps data rate support high-frequency switching converters, while the 25kV/µs CMTI ensures stable operation under fast voltage transients. The device's low propagation delay (50ns) minimizes signal delay in feedback loops, improving transient response. This isolator is essential for safe and efficient power conversion in applications such as server power supplies and industrial converters.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1201BRZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1201BRZ | ADUM1201CRZ | ADUM1201WTRZ-RL7 | ISO7721D |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 3000 Vrms |
| Data Rate | 10 Mbps | 10 Mbps | 25 Mbps | 10 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Propagation Delay | 50 ns | 50 ns | 30 ns | 50 ns | 11 ns |
| Supply Voltage Range | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 2.25V to 5.5V |
| Automotive Grade | No | No | No | Yes (AEC-Q100) | No |
Key Differentiators
- iCoupler technology provides superior performance over optocouplers (vs Optocoupler-based isolators)
- High CMTI of 25 kV/µs (vs ADUM1201CRZ (also 25 kV/µs))
- Automotive-grade variant available (vs ADUM1201BRZ (non-automotive))
Design Notes
For optimal isolation performance, maintain a clear area under the SOIC-8 package, free from copper traces or ground planes. This reduces parasitic capacitance and improves high-voltage isolation. Place decoupling capacitors (0.1µF) close to VDD1 and VDD2 pins to ensure stable operation.
Keep the isolation barrier (the gap between side 1 and side 2) free of any traces or components. This ensures the rated isolation voltage is maintained. Route high-voltage traces away from the isolator to avoid coupling noise. Use proper creepage and clearance distances as per safety standards.
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. Also, avoid floating inputs; connect unused inputs to ground or supply to prevent undefined states.
Compliance Information
RoHS compliant per Analog Devices datasheet. Not AEC-Q100 qualified; automotive variants available.
