ADUM1441ARWZ - Micro-Power Quad Digital Isolator | Analog Devices
MPN: ADUM1441ARWZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.1 | $2,100.00 |
Drop-in alternatives for ADUM1441ARWZ 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:
ADUM1441ARWZ-RL
β Drop-Inπ Reference alternative (not in catalog)
ADUM1440ARWZ
β‘ Same Packageπ Reference alternative (not in catalog)
ADUM1442ARWZ
β‘ Same Packageπ Reference alternative (not in catalog)
ADUM1401ARWZ
β‘ Same Packageπ Reference alternative (not in catalog)
ADUM1441ARWZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 2 Mbps |
| CMTI | 25 kV/Β΅s |
| Supply Voltage (VDD1) | 3.0 V to 3.6 V |
| Supply Voltage (VDD2) | 3.0 V to 3.6 V |
| Quiescent Current per Channel (ENx=0) | <10 Β΅A |
| Quiescent Current per Channel (ENx=1) | <1 Β΅A |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package | 16-lead SOIC-W |
| Mounting Type | Surface Mount |
| Technology | iCoupler |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
| Pulse Width Distortion | [DATA_NEEDED: pulse width distortion] |
| RoHS Status | Compliant |
ADUM1441ARWZ Pin Configuration
| Pin 1 | VDD1 β Supply voltage for side 1 |
| Pin 2 | GND1 β Ground for side 1 |
| Pin 3 | VIA β Input channel A |
| Pin 4 | VIB β Input channel B |
| Pin 5 | VOC β Output channel C |
| Pin 6 | VOD β Output channel D |
| Pin 7 | EN1 β Enable for side 1 |
| Pin 8 | NC β No connect |
| Pin 9 | NC β No connect |
| Pin 10 | EN2 β Enable for side 2 |
| Pin 11 | VOD β Output channel D |
| Pin 12 | VOC β Output channel C |
| Pin 13 | VIB β Input channel B |
| Pin 14 | VIA β Input channel A |
| Pin 15 | GND2 β Ground for side 2 |
| Pin 16 | VDD2 β Supply voltage for side 2 |
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
ADUM1441ARWZ is suitable for 6 applications: Industrial Field Bus Isolation, Isolated Sensor Interfaces, Power Supply Control Loops, Medical Equipment Isolation, Battery-Powered IoT Devices, Automotive Electronics.
Industrial Field Bus Isolation
The ADUM1441ARWZ provides galvanic isolation for SPI, I2C, and UART interfaces in industrial field buses. Its 2500 Vrms isolation and 25 kV/Β΅s CMTI ensure reliable communication in noisy environments with ground potential differences. The low power consumption (<10 Β΅A per channel) is ideal for bus-powered nodes, and the 2 Mbps data rate supports standard field bus protocols. The SOIC-W package is suitable for industrial control modules where space is available.
Recommended
Isolated Sensor Interfaces
In sensor applications, the ADUM1441ARWZ isolates digital sensor outputs from the main controller, preventing ground loops and noise coupling. Its ultra-low quiescent current (<1 Β΅A with refresh disabled) extends battery life in wireless sensor nodes. The 2 Mbps data rate is sufficient for most sensor data rates, and the 3.0-3.6 V supply range matches common sensor voltages. The small SOIC-W package fits compact sensor modules.
Recommended
Power Supply Control Loops
The ADUM1441ARWZ isolates control signals in power supply feedback loops, protecting low-voltage controllers from high-voltage transients. Its 25 kV/Β΅s CMTI ensures stable operation in switching power supplies with fast voltage transients. The low propagation delay (though not specified in the provided data) is adequate for control loop frequencies up to 2 Mbps. The device's low power consumption is beneficial in always-on power management circuits.
Recommended
Medical Equipment Isolation
The ADUM1441ARWZ provides patient isolation in medical devices, meeting safety requirements for galvanic isolation. Its 2500 Vrms isolation rating is suitable for many medical applications, and the low power consumption is ideal for battery-operated devices. The wide temperature range (-40Β°C to +125Β°C) ensures reliability in sterilization environments. The SOIC-W package is compatible with standard medical PCB assembly processes.
Recommended
Battery-Powered IoT Devices
The ADUM1441ARWZ is ideal for IoT devices where power consumption is critical. With less than 1 Β΅A per channel when internal refresh is disabled, it minimizes battery drain. The 2 Mbps data rate supports typical IoT communication protocols, and the 3.0-3.6 V supply range is compatible with Li-ion batteries. The small package and low power make it suitable for wearable and remote sensor nodes.
Recommended
Automotive Electronics
The ADUM1441ARWZ can be used in automotive applications for isolating CAN or LIN bus interfaces, though it is not AEC-Q100 qualified. Its 2500 Vrms isolation and 25 kV/Β΅s CMTI handle automotive transients, and the wide temperature range covers under-hood environments. The low power consumption is beneficial for always-on modules. For automotive-grade, consider the ADUM1441ARWZ-RL (not AEC-Q100) or other qualified isolators.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1441ARWZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1441ARWZ-RL | ADUM1441ARQZ | ADUM1440ARWZ | ADUM1442ARWZ | ADUM1401ARWZ |
|---|---|---|---|---|---|---|
| Package | 16-lead SOIC-W | 16-lead SOIC-W | 16-lead QSOP | 16-lead SOIC-W | 16-lead SOIC-W | 16-lead SOIC-W |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Channel Direction | 2/2 | 2/2 | 2/2 | 3/1 | 1/3 | 3/1 |
| Data Rate | 2 Mbps | 2 Mbps | 2 Mbps | 2 Mbps | 2 Mbps | 90 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s |
| Quiescent Current per Channel (ENx=0) | <10 Β΅A | <10 Β΅A | <10 Β΅A | <10 Β΅A | <10 Β΅A | [DATA_NEEDED] |
Key Differentiators
- Ultra-low power consumption (vs ADUM1401ARWZ)
- Lower data rate but sufficient for many protocols (vs ADUM1401ARWZ)
- Same package but different channel configuration (vs ADUM1440ARWZ)
Design Notes
The ADUM1441ARWZ operates from 3.0 V to 3.6 V on both VDD1 and VDD2. Ensure that both supplies are within this range and adequately decoupled with 0.1 Β΅F ceramic capacitors close to the VDD pins. The ultra-low quiescent current (<10 Β΅A per channel) makes it suitable for battery-powered designs, but note that when internal refresh is disabled (ENx=1), the input must be toggled periodically to maintain the output state.
For optimal isolation performance, maintain a clearance of at least 8 mm between the primary and secondary side copper on the PCB, as recommended for 2500 Vrms isolation. Place the isolator near the board edge to maximize creepage distance. Use a solid ground plane under each side, but do not connect the two grounds together on the PCB.
A common mistake is leaving the ENx pins floating. The ENx pins control the internal refresh; when ENx=1, the refresh is disabled, and the input must be toggled to maintain the output. If ENx is left floating, the device may operate in an undefined state. Always tie ENx to VDD or GND as per the datasheet. Also, do not exceed the absolute maximum ratings for supply voltage or input voltage.
Compliance Information
RoHS compliance is assumed based on Analog Devices standard practice, but not explicitly stated in the provided data. AEC-Q100 qualification is not indicated for this part.
