ADUM1440ARWZ - Quad-Channel Digital Isolator | Analog Devices
MPN: ADUM1440ARWZ ✓ 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 | $2.25 | $2,250.00 |
Drop-in alternatives for ADUM1440ARWZ — 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:
ADUM1400ARWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1401ARWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1402ARWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1441ARWZ
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →ADUM1442ARWZ
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →ISO7741DW
✅ Drop-In📋 Reference alternative (not in catalog)
SI8641BB-B-IS1
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1440ARWZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Channel Directionality | 4/0 (all forward) |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 1 Mbps |
| CMTI | 25 kV/µs |
| Supply Voltage | 3.0V to 5.5V |
| Power Consumption (5V, 0-2 Mbps) | 1.0 mA per channel max |
| Power Consumption (5V, 10 Mbps) | 3.5 mA per channel max |
| Power Consumption (5V, 100 Mbps) | 31 mA per channel max |
| Operating Temperature Range | -40°C to +105°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Technology | iCoupler |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
ADUM1440ARWZ 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 | VID — Input channel D |
| 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 | VOD — Output channel D |
| Pin 12 | VOC — Output channel C |
| Pin 13 | VOB — Output channel B |
| Pin 14 | VOA — Output channel A |
| 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
ADUM1440ARWZ is suitable for 6 applications: Industrial Field Bus Isolation, Motor Control, Power Supply Monitoring, Medical Equipment, Communication Interfaces, Data Acquisition Systems.
Industrial Field Bus Isolation
The ADUM1440ARWZ provides galvanic isolation for industrial field bus interfaces such as RS-485 and CAN. Its 2500 Vrms isolation voltage protects microcontrollers from ground loops and high-voltage transients. The 1 Mbps data rate is sufficient for most field bus protocols, and the low power consumption (1.0 mA per channel at 5V) is ideal for power-sensitive nodes. The high CMTI of 25 kV/µs ensures reliable operation in electrically noisy factory environments, preventing data corruption from fast transients.
Recommended
Motor Control
In motor control systems, the ADUM1440ARWZ isolates the low-voltage control circuitry from the high-voltage power stage. The 2500 Vrms isolation rating provides safety and prevents noise from the motor drivers from affecting the controller. The 1 Mbps data rate is adequate for PWM control signals and feedback. The device's low power consumption and wide temperature range (-40°C to +105°C) make it suitable for industrial motor drives operating in harsh environments. The high CMTI ensures stable operation despite fast switching transients.
Recommended
Power Supply Monitoring
The ADUM1440ARWZ is used to isolate digital monitoring signals from power supply rails. It allows safe communication between the high-voltage power stage and the low-voltage monitoring circuit. The 2500 Vrms isolation protects the monitoring electronics from high voltages. The 1 Mbps data rate is sufficient for transmitting status signals and fault flags. The low power consumption is beneficial for always-on monitoring circuits. The device's small SOIC-16 package fits compact power supply designs.
Recommended
Medical Equipment
The ADUM1440ARWZ provides galvanic isolation in medical devices, ensuring patient safety by isolating low-voltage control circuits from high-voltage sections. The 2500 Vrms isolation rating meets safety standards for medical equipment. The 1 Mbps data rate is adequate for sensor data and control signals. The device's low power consumption is important for battery-operated medical devices. The wide operating temperature range and high reliability of iCoupler technology make it suitable for critical medical applications.
Recommended
Communication Interfaces
The ADUM1440ARWZ is used to isolate communication interfaces like RS-485, CAN, and SPI. It provides galvanic isolation to prevent ground loops and protect against voltage spikes. The 1 Mbps data rate supports standard communication speeds. The device's low power consumption is ideal for remote sensors and nodes. The high CMTI ensures reliable data transmission in noisy environments. The SOIC-16 package is easy to integrate into existing designs.
Recommended
Data Acquisition Systems
The ADUM1440ARWZ isolates digital data lines in data acquisition systems, protecting sensitive measurement circuits from noise and ground loops. The 2500 Vrms isolation rating ensures safe operation in industrial environments. The 1 Mbps data rate is sufficient for transmitting digitized sensor data. The low power consumption is beneficial for portable data loggers. The device's high CMTI prevents data corruption from transient voltages, ensuring accurate measurements.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1440ARWZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1400ARWZ | ADUM1401ARWZ | ADUM1402ARWZ | ADUM1441ARWZ | ADUM1442ARWZ | ISO7741DW | SI8641BB-B-IS1 |
|---|---|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms | 2500 Vrms |
| Data Rate | 1 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 1 Mbps | 1 Mbps | 100 Mbps | 150 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs | 35 kV/µs |
| Supply Voltage | 3.0V to 5.5V | 3.0V to 5.5V | 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 | 2.5V to 5.5V |
| Channel Directionality | 4/0 | 4/0 | 3/1 | 2/2 | 3/1 | 2/2 | 4/0 | 4/0 |
| Operating Temperature | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -55°C to +125°C | -40°C to +125°C |
Key Differentiators
- Low power consumption (vs ADUM1400ARWZ)
- Lower data rate for cost savings (vs ADUM1400ARWZ)
- Same package and pinout (vs ISO7741DW)
Design Notes
For optimal isolation performance, maintain a minimum creepage distance of 8 mm between the high-voltage and low-voltage sides on the PCB. Use a slot or cutout under the isolator to increase the creepage path. Place bypass capacitors (0.1 µF) close to VDD1 and VDD2 pins, and use separate ground planes for each side to avoid coupling noise.
The ADUM1440ARWZ consumes low power, but ensure the supply voltage is within 3.0V to 5.5V. At 5V, each channel draws up to 1.0 mA at low data rates. For higher data rates, power increases. Use a low-dropout regulator if the supply is noisy, and add a 10 µF bulk capacitor to handle transient currents.
Do not exceed the absolute maximum ratings, especially the isolation voltage (2500 Vrms). Ensure the input signals are within the supply voltage range. Avoid floating inputs by tying unused inputs to GND or VDD. Also, be aware that the ADUM1440 has a 1 Mbps data rate limit; for higher speeds, use the ADUM1400 series.
Compliance Information
RoHS compliant per datasheet. Other compliance info not specified in provided data.
