ADUM1441ARWZ-RL7 - 4-Ch Digital Isolator | Analog Devices
MPN: ADUM1441ARWZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.5 | $1,250.00 |
| 1,000 | $2.2 | $2,200.00 |
Drop-in alternatives for ADUM1441ARWZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM1440ARWZ-RL7
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →ADUM1442ARWZ-RL7
✅ Drop-In✓ In Stock
$2.48 / Unit
View Datasheet →ISO7741DW
✅ Drop-In📋 Reference alternative (not in catalog)
SI8641BB-B-IS1
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1441ARWZ-RL7 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 2 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1) | 3.0 V to 3.6 V |
| Supply Voltage (VDD2) | 3.0 V to 3.6 V |
| Operating Temperature Range | -40°C to +125°C |
| Package | 16-Lead SOIC-W |
| Mounting Type | Surface Mount |
| Channel Directionality | 3/1 (3 forward, 1 reverse) |
| Default Output State | High |
| Propagation Delay | [DATA_NEEDED: Propagation Delay] |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| RoHS Status | Compliant |
| Technology | iCoupler |
ADUM1441ARWZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Supply voltage for side 1 |
| Pin 2 | GND1 — Ground for side 1 |
| Pin 3 | VIA — Input channel A |
| Pin 4 | VIB — Input channel B |
| Pin 5 | VIC — Input channel C |
| Pin 6 | VOD — Output channel D (reverse) |
| Pin 7 | GND1 — Ground for side 1 |
| Pin 8 | NC — No connect |
| Pin 9 | NC — No connect |
| Pin 10 | GND2 — Ground for side 2 |
| Pin 11 | VID — Input channel D (reverse) |
| Pin 12 | VOA — Output channel A |
| Pin 13 | VOB — Output channel B |
| Pin 14 | VOC — Output channel C |
| Pin 15 | GND2 — Ground for side 2 |
| Pin 16 | VDD2 — 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-RL7 is suitable for 6 applications: Industrial Fieldbus Communication, Isolated SPI Interface, Motor Control Signal Isolation, Medical Equipment Isolation, Isolated Power Supply Feedback, Automotive Battery Management.
Industrial Fieldbus Communication
The ADUM1441ARWZ-RL7 provides galvanic isolation for fieldbus interfaces such as RS-485 and CAN, protecting microcontrollers from ground loops and transient voltages. Its 2500Vrms isolation and 25kV/µs CMTI ensure reliable data transmission in noisy industrial environments. The 2Mbps data rate supports standard fieldbus speeds, while the 3/1 channel configuration accommodates bidirectional communication. Low power consumption is beneficial for bus-powered nodes.
Recommended
Isolated SPI Interface
The ADUM1441ARWZ-RL7 is ideal for isolating SPI buses between microcontrollers and peripheral devices such as ADCs, DACs, or sensors. The 3/1 channel directionality matches the typical SPI signals: SCLK, MOSI, and CS forward, and MISO reverse. The 2Mbps data rate is sufficient for most SPI applications, and the low propagation delay ensures accurate timing. The default high output state provides fail-safe operation if the master is unpowered.
Recommended
Motor Control Signal Isolation
In motor control systems, the ADUM1441ARWZ-RL7 isolates low-voltage control signals from high-voltage power stages. Its high CMTI (25kV/µs) prevents false triggering due to fast switching transients from IGBTs or MOSFETs. The 2Mbps data rate is adequate for PWM and fault signals. The wide operating temperature range (-40°C to +125°C) suits industrial motor drives. The small SOIC-W package saves board space in compact drives.
Recommended
Medical Equipment Isolation
The ADUM1441ARWZ-RL7 provides the galvanic isolation required for patient safety in medical devices. Its 2500Vrms isolation rating meets basic insulation requirements for many medical applications. The low power consumption is critical for battery-operated devices. The default high output state ensures safe operation in case of fault. The device's reliability and long-term stability make it suitable for life-critical monitoring equipment.
Recommended
Isolated Power Supply Feedback
The ADUM1441ARWZ-RL7 can be used to isolate feedback signals in power supply designs, such as voltage and current monitoring. Its 2Mbps data rate is sufficient for control loop feedback, and the high CMTI ensures stable operation despite switching noise. The low quiescent current minimizes power loss in the feedback path. The 3/1 channel configuration allows for both forward control signals and reverse status feedback.
Recommended
Automotive Battery Management
In automotive battery management systems (BMS), the ADUM1441ARWZ-RL7 isolates the high-voltage battery pack from the low-voltage control electronics. Its 2500Vrms isolation and high CMTI ensure reliable communication in the presence of high-voltage switching transients. The wide temperature range (-40°C to +125°C) meets automotive requirements. The low power consumption is beneficial for always-on monitoring circuits.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1441ARWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1441ARQZ-RL7 | ADUM1441ARSZ-RL7 | ADUM1440ARWZ-RL7 | ISO7741DW |
|---|---|---|---|---|---|
| Package | 16-Lead SOIC-W | 16-Lead QSOP | 16-Lead SOIC-N | 16-Lead SOIC-W | 16-Lead SOIC-W |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Data Rate | 2 Mbps | 2 Mbps | 2 Mbps | 2 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Channel Directionality | 3/1 | 3/1 | 3/1 | 4/0 | 3/1 |
| Supply Voltage Range | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 2.25V to 5.5V |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -55°C to +125°C |
Key Differentiators
- Micropower operation with low quiescent current (vs ISO7741DW)
- iCoupler technology for reliable isolation (vs SI8641BB-B-IS1)
- Wide operating temperature range (vs ADUM1441ARQZ-RL7)
Design Notes
To maintain the isolation barrier, ensure that the PCB layout provides adequate creepage and clearance distances between the primary and secondary sides. For 2500Vrms isolation, a minimum creepage of 4mm is recommended for basic insulation. Place decoupling capacitors (0.1µF) close to VDD1 and VDD2 pins to reduce noise.
The ADUM1441ARWZ-RL7 operates from 3.0V to 3.6V supplies. Ensure that both VDD1 and VDD2 are within this range and are properly decoupled. The device consumes very low quiescent current, but transient currents during switching should be considered. Use low-ESR ceramic capacitors for decoupling.
Do not exceed the absolute maximum ratings for supply voltage or input/output voltages. The default high output state means that if the input side is unpowered, the outputs will be high, which may cause unintended operation in some systems. Verify that this behavior is acceptable for your application.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
