ADUM1420ARWZ - Quad-Channel Digital Isolator | Analog Devices
MPN: ADUM1420ARWZ ✓ 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 ADUM1420ARWZ — 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✓ In Stock
$2.22 / Unit
View Datasheet →ADUM1400BRWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1400CRWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1401ARWZ
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →ADUM1402ARWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM1420ARWZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Channel Directionality | 4/0 (all inputs on one side) |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 10 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage Range | 3 V to 5.5 V |
| Supply Current (5V, 0-2 Mbps) | 1.0 mA per channel max |
| Supply Current (5V, 10 Mbps) | 3.5 mA per channel max |
| Supply Current (3V, 0-2 Mbps) | 0.7 mA per channel max |
| Operating Temperature Range | -40°C to +105°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
| Pulse Width Distortion | [DATA_NEEDED: pulse width distortion] |
| RoHS Status | Compliant |
ADUM1420ARWZ 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 | VOA — Output channel A |
| Pin 12 | VOB — Output channel B |
| Pin 13 | VOC — Output channel C |
| Pin 14 | VOD — Output channel D |
| 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
ADUM1420ARWZ is suitable for 6 applications: Industrial Fieldbus Isolation, Medical Equipment Isolation, Isolated SPI/UART Interfaces, Power Supply Control Isolation, Automotive Electronics Isolation, Communication Systems Isolation.
Industrial Fieldbus Isolation
The ADUM1420ARWZ provides galvanic isolation for industrial fieldbus interfaces such as RS-485, CAN, and Profibus. Its 2500Vrms isolation and 25kV/µs CMTI ensure reliable communication in noisy industrial environments. The 10 Mbps data rate supports common fieldbus speeds, and the 4/0 channel configuration allows isolation of data and control lines. Low power consumption (1.0 mA per channel at 5V) minimizes heat in sealed enclosures. The wide temperature range (-40°C to +105°C) suits harsh factory floors. Compared to optocouplers, iCoupler technology offers faster propagation delays and no LED aging, improving long-term reliability.
Recommended
Medical Equipment Isolation
In medical devices, patient safety requires galvanic isolation between low-voltage control circuits and high-voltage sections. The ADUM1420ARWZ provides 2500Vrms isolation, meeting basic isolation requirements for many medical applications. Its low power consumption is beneficial for battery-powered portable devices. The 10 Mbps data rate is sufficient for sensor data and control signals. The device's small 16-SOIC package saves board space in compact designs. iCoupler technology ensures stable performance over time, unlike optocouplers that degrade with LED aging. The operating temperature range of -40°C to +105°C covers clinical environments.
Recommended
Isolated SPI/UART Interfaces
The ADUM1420ARWZ is ideal for isolating SPI or UART interfaces between microcontrollers and peripherals. With 4 channels, it can isolate SCLK, MOSI, MISO, and SS lines in a single package. The 10 Mbps data rate supports typical SPI speeds up to 10 MHz. The 4/0 directionality is perfect for unidirectional data flows. Low propagation delay ensures minimal timing skew. The device operates from 3V to 5.5V, allowing interface with both 3.3V and 5V logic. Its high CMTI (25kV/µs) prevents data corruption in electrically noisy environments. This simplifies PCB design by eliminating the need for multiple optocouplers.
Recommended
Power Supply Control Isolation
In power supply designs, the ADUM1420ARWZ isolates control signals between primary and secondary sides. Its 2500Vrms isolation rating is suitable for many AC-DC and DC-DC converters. The 10 Mbps data rate allows fast feedback loops. The device's low power consumption reduces overall supply losses. The 4/0 channel configuration can isolate PWM signals and fault indicators. High CMTI ensures stable operation during switching transients. The wide temperature range supports operation in power supplies with elevated ambient temperatures. iCoupler technology provides reliable isolation without the current transfer ratio degradation seen in optocouplers.
Recommended
Automotive Electronics Isolation
The ADUM1420ARWZ is suitable for automotive applications requiring galvanic isolation, such as battery management systems, motor drives, and on-board chargers. Its 2500Vrms isolation meets automotive safety requirements for basic isolation. The operating temperature range of -40°C to +105°C covers under-hood environments. The 10 Mbps data rate supports CAN and LIN interfaces. High CMTI (25kV/µs) ensures reliable operation in the presence of electromagnetic interference from motors and ignition systems. The device's small package saves space in dense automotive PCBs. iCoupler technology offers superior reliability compared to optocouplers in vibration and temperature extremes.
Recommended
Communication Systems Isolation
In communication systems, the ADUM1420ARWZ isolates digital interfaces between line cards and control planes. Its 2500Vrms isolation protects against ground loops and lightning surges. The 10 Mbps data rate is adequate for control and monitoring signals. The device's low power consumption is beneficial in high-density systems. The 4/0 channel configuration allows isolation of multiple signals in one package. High CMTI ensures data integrity in environments with high electromagnetic interference. The wide temperature range supports operation in telecom shelters. iCoupler technology provides consistent performance over time, reducing maintenance costs.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1420ARWZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1400ARWZ | ADUM1400BRWZ | ADUM1400CRWZ |
|---|---|---|---|---|
| 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) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 10 Mbps | 10 Mbps | 25 Mbps | 90 Mbps |
| Channel Directionality | 4/0 | 4/0 | 4/0 | 4/0 |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C |
Key Differentiators
- iCoupler technology eliminates LED aging (vs Optocoupler-based isolators)
- Higher data rate than standard optocouplers (vs Optocoupler-based isolators)
- Low power consumption (vs ADUM1400BRWZ)
Design Notes
For optimal isolation performance, maintain at least 8mm creepage and clearance distance between the input and output sides of the ADUM1420ARWZ on the PCB. Place a 0.1µF bypass capacitor close to each VDD pin (VDD1 and VDD2) to ground. Use a solid ground plane under the device, but ensure the ground planes on each side are separated to preserve isolation. Avoid routing high-voltage traces near the isolation barrier.
The ADUM1420ARWZ consumes up to 3.5 mA per channel at 10 Mbps with 5V supply, totaling 14 mA for all channels. Ensure the power supply can handle this current. For 3V operation, current is lower (0.7 mA per channel at 0-2 Mbps). Use low-ESR capacitors to maintain stable supply voltage. If the input and output sides have different supply voltages, ensure both are within the 3V to 5.5V range.
Do not exceed the absolute maximum ratings, including isolation voltage (2500 Vrms) and supply voltage (5.5V). Ensure the input signals do not exceed the supply voltage. Avoid floating input pins; tie unused inputs to ground or supply. The device is not intended for safety isolation in medical applications requiring reinforced isolation; verify the isolation rating meets your safety standards.
Compliance Information
RoHS compliant per distributor listings. No AEC-Q100 qualification indicated for this part.
