ADUM4154ARIZ - 5kV SPI Digital Isolator | Analog Devices
MPN: ADUM4154ARIZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
Drop-in alternatives for ADUM4154ARIZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADUM4154BRIZ
β Drop-Inβ In Stock
$4.16 / Unit
View Datasheet βADUM3154ARSZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM3154BRSZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM4154ARIZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Isolation Voltage | 5000 Vrms |
| Data Rate | 2 Mbps (DigiKey) / 17 MHz SPI clock (datasheet) |
| CMTI | 25 kV/Β΅s |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
| Supply Voltage VDD1 | 4.5 V to 5.5 V |
| Supply Voltage VDD2 | 3.0 V to 3.6 V |
| Operating Temperature | -40Β°C to +125Β°C |
| Package | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Technology | iCoupler |
| Number of Slave Devices Supported | 4 |
| Address Pins | 2 |
| RoHS Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL level] |
ADUM4154ARIZ Pin Configuration
| Pin 1 | VDD1 β Primary supply voltage (4.5V to 5.5V) |
| Pin 2 | GND1 β Primary ground |
| Pin 3 | CLK β SPI clock input |
| Pin 4 | MO/SI β Master out, slave in data |
| Pin 5 | MI/SO β Master in, slave out data |
| Pin 6 | SS1 β Slave select 1 |
| Pin 7 | SS2 β Slave select 2 |
| Pin 8 | SS3 β Slave select 3 |
| Pin 9 | SS4 β Slave select 4 |
| Pin 10 | ADDR0 β Address pin 0 |
| Pin 11 | ADDR1 β Address pin 1 |
| Pin 12 | GND2 β Secondary ground |
| Pin 13 | VDD2 β Secondary supply voltage (3.0V to 3.6V) |
| Pin 14 | EN β Enable pin (active high) |
| Pin 15 | NC β No connect |
| Pin 16 | NC β No connect |
| Pin 17 | NC β No connect |
| Pin 18 | NC β No connect |
| Pin 19 | NC β No connect |
| Pin 20 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADUM4154ARIZ is suitable for 6 applications: Industrial Automation, Motor Control, Data Acquisition Systems, Medical Equipment, Renewable Energy Systems, Test and Measurement.
Industrial Automation
The ADUM4154ARIZ provides galvanic isolation for SPI communication between PLCs, sensors, and actuators in industrial environments. Its 5kV isolation and 25kV/Β΅s CMTI ensure reliable operation in the presence of motor noise and ground loops. The 17MHz SPI clock supports high-speed data acquisition, while the four slave select lines enable connection of multiple sensors to a single controller. The wide temperature range (-40Β°C to +125Β°C) suits harsh factory floors.
Recommended
Motor Control
In motor control systems, the ADUM4154ARIZ isolates the SPI interface between the microcontroller and gate drivers or encoder interfaces. The high CMTI (25kV/Β΅s) prevents false triggering from fast voltage transients generated by PWM switching. The 5kV isolation protects low-voltage control circuitry from high-voltage motor drives. The low propagation delay ensures accurate timing for real-time control loops, and the four slave select lines allow connection of multiple encoders or current sensors.
Recommended
Data Acquisition Systems
The ADUM4154ARIZ is ideal for data acquisition systems requiring isolation between analog front-ends and digital controllers. It supports SPI clock rates up to 17MHz, enabling high-throughput sampling from ADCs and DACs. The four slave select lines allow multiple converters to share a single SPI bus, reducing pin count. The 5kV isolation ensures safety in medical and industrial monitoring equipment, while the low jitter maintains signal integrity for precise measurements.
Recommended
Medical Equipment
In medical devices, the ADUM4154ARIZ provides patient isolation for SPI-based sensors and monitors. The 5kV isolation meets safety standards for patient-connected equipment, preventing leakage currents. The low power consumption and small SOIC-20 package make it suitable for portable devices. The wide temperature range and high reliability of iCoupler technology ensure long-term operation in critical care environments.
Recommended
Renewable Energy Systems
The ADUM4154ARIZ is used in solar inverters and wind turbine controllers to isolate SPI communication between the main controller and power stage monitoring circuits. The high CMTI (25kV/Β΅s) ensures reliable operation in the presence of high-voltage switching transients. The 5kV isolation protects low-voltage control electronics from high-voltage DC buses. The four slave select lines enable connection of multiple voltage and current sensors for comprehensive system monitoring.
Recommended
Test and Measurement
In test and measurement equipment, the ADUM4154ARIZ isolates SPI interfaces between measurement front-ends and digital processors. The 17MHz SPI clock supports high-speed data transfer for oscilloscopes and data loggers. The low propagation delay and jitter ensure accurate timing for synchronized measurements. The 5kV isolation protects sensitive measurement circuits from ground loops and noise, improving measurement accuracy.
Recommended
Recommended Products Summary
Engineering reference data for ADUM4154ARIZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM4154BRIZ | ADUM3154ARSZ | ADUM3154BRSZ | ISO7741DW | Si8641BB-B-IS1 |
|---|---|---|---|---|---|---|
| Package | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (same) | 20-SOIC (same) | 20-SOIC (same) | SOIC-16 (different) | SOIC-16 (different) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Data Rate | 2 Mbps (DigiKey) / 17 MHz SPI clock | 2 Mbps / 17 MHz | 2 Mbps / 17 MHz | 2 Mbps / 17 MHz | 100 Mbps | 150 Mbps |
| CMTI | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 100 kV/Β΅s | 50 kV/Β΅s |
| Number of Slave Devices | 4 | 4 | 2 | 2 | N/A (not SPI-specific) | N/A (not SPI-specific) |
| Supply Voltage VDD1 | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 2.25V to 5.5V | 2.5V to 5.5V |
Key Differentiators
- Supports up to four SPI slave devices (vs ADUM3154ARSZ)
- High CMTI of 25 kV/Β΅s (vs ISO7741DW)
- SPI-optimized with integrated slave select routing (vs Si8641BB-B-IS1)
Design Notes
For 5kV isolation, ensure adequate creepage and clearance distances on the PCB. The SOIC-20 package has a minimum creepage of 8mm, but for reinforced isolation, maintain at least 8mm between primary and secondary sides. Use a slot or cutout under the isolator to increase creepage distance.
Decouple both VDD1 and VDD2 with 0.1Β΅F ceramic capacitors placed as close as possible to the pins. Additionally, use a 10Β΅F bulk capacitor on each supply if the power source is far. This ensures stable operation and reduces noise coupling across the isolation barrier.
Do not exceed the absolute maximum ratings for supply voltages. Ensure that the voltage differential between any two pins does not exceed the isolation rating. Also, avoid floating the enable pin; tie it to VDD1 or VDD2 as appropriate to ensure the device is always enabled or disabled as intended.
Compliance Information
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification indicated.
