ADUM1301ARWZ - 3-Channel Digital Isolator 2500Vrms | Analog Devices
MPN: ADUM1301ARWZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.25 | $3.25 |
| 10 | $2.95 | $29.50 |
| 100 | $2.75 | $275.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.75 | $2,750.00 |
Drop-in alternatives for ADUM1301ARWZ 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:
ADUM1301ARWZ-RL
β Drop-Inπ Reference alternative (not in catalog)
ADUM1301ARW
β Drop-Inπ Reference alternative (not in catalog)
ADUM1300ARWZ
β Drop-Inβ In Stock
$1.75 / Unit
View Datasheet βADUM1301BRWZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM1301CRWZ
β Drop-Inπ Reference alternative (not in catalog)
ISO7721DW
β Drop-Inπ Reference alternative (not in catalog)
ADUM1301ARWZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 3 |
| Isolation Voltage | 2500Vrms |
| Data Rate | 1Mbps |
| Common Mode Transient Immunity (CMTI) | 25kV/Β΅s |
| Propagation Delay (tpLH/tpHL) | 100ns, 100ns (max) |
| Pulse Width Distortion | 40ns (max) |
| Rise/Fall Time (Typ) | 2.5ns, 2.5ns |
| Supply Voltage Range | 2.7V to 5.5V |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Technology | iCoupler |
| Channel Configuration | 3/0 (forward/reverse) |
| Propagation Delay Skew | [DATA_NEEDED: propagation delay skew] |
ADUM1301ARWZ Pin Configuration
| Pin 1 | VDD1 β Supply voltage, side 1 |
| Pin 2 | GND1 β Ground, side 1 |
| Pin 3 | VIA β Input, channel A |
| Pin 4 | VIB β Input, channel B |
| Pin 5 | VIC β Input, channel C |
| Pin 6 | GND1 β Ground, side 1 |
| Pin 7 | NC β No connect |
| Pin 8 | NC β No connect |
| Pin 9 | NC β No connect |
| Pin 10 | GND2 β Ground, side 2 |
| Pin 11 | VOC β Output, channel C |
| Pin 12 | VOB β Output, channel B |
| Pin 13 | VOA β Output, channel A |
| Pin 14 | GND2 β Ground, side 2 |
| Pin 15 | VDD2 β Supply voltage, side 2 |
| Pin 16 | 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
ADUM1301ARWZ is suitable for 6 applications: Industrial Fieldbus Isolation, Isolated SPI Communication, Isolated UART Communication, Power Supply Control Isolation, Medical Equipment Isolation, Isolated Sensor Interface.
Industrial Fieldbus Isolation
The ADUM1301ARWZ provides galvanic isolation for industrial fieldbus interfaces such as RS-485, CAN, and PROFIBUS. Its 2500Vrms isolation and 25kV/Β΅s CMTI ensure reliable communication in harsh industrial environments with high voltage transients and ground potential differences. The 1Mbps data rate is sufficient for most fieldbus protocols, and the three channels can isolate TX, RX, and control signals. The wide supply range (2.7V to 5.5V) allows interfacing with both 3.3V and 5V logic, simplifying system design. Compared to optocouplers, the iCoupler technology offers better timing consistency and longer lifespan, reducing maintenance costs.
Recommended
Isolated SPI Communication
The ADUM1301ARWZ is ideal for isolating SPI buses between microcontrollers and peripheral devices such as ADCs, DACs, and sensors. Its three channels can isolate SCLK, MOSI, and MISO signals, while the chip select can be isolated using a separate channel or a fourth isolator. The 1Mbps data rate supports standard SPI speeds, and the low propagation delay (100ns) ensures minimal timing skew. The high CMTI prevents data corruption in noisy industrial environments. The device's small SOIC package and surface-mount design make it easy to integrate into compact PCB layouts. For higher-speed SPI, consider the ADUM1301BRWZ (10Mbps) or ADUM1301CRWZ (90Mbps).
Recommended
Isolated UART Communication
The ADUM1301ARWZ can isolate UART signals between two systems, providing galvanic isolation to protect against ground loops and voltage spikes. Its three channels can isolate TX, RX, and a control signal such as RTS or CTS. The 1Mbps data rate is sufficient for standard UART speeds up to 115200 baud and beyond. The device's high CMTI ensures reliable data transmission in electrically noisy environments, such as motor drives and power converters. The wide supply range allows direct connection to both 3.3V and 5V UART interfaces without level shifting. The iCoupler technology provides superior performance compared to optocouplers, with faster propagation delays and no LED aging effects.
Recommended
Power Supply Control Isolation
The ADUM1301ARWZ is used to isolate control signals in power supply systems, such as PWM signals for MOSFET drivers and feedback signals from voltage sensors. Its 2500Vrms isolation protects low-voltage control circuitry from high-voltage power stages. The 1Mbps data rate is adequate for PWM frequencies up to several hundred kHz, and the low propagation delay ensures accurate timing. The high CMTI prevents false triggering due to switching transients. The device's wide supply range allows operation from both the control-side and power-side supplies. In applications like isolated DC-DC converters, the ADUM1301ARWZ can replace optocouplers, offering better reliability and faster response.
Recommended
Medical Equipment Isolation
The ADUM1301ARWZ provides galvanic isolation in medical devices to protect patients and operators from electrical hazards. Its 2500Vrms isolation rating meets basic isolation requirements for many medical applications. The device's low propagation delay and high CMTI ensure reliable signal transmission in the presence of interference from electrosurgical equipment and other sources. The wide supply range allows interfacing with various logic levels. The iCoupler technology offers advantages over optocouplers, including better long-term stability and no degradation over time. The compact SOIC package is suitable for space-constrained medical devices such as patient monitors and diagnostic equipment.
Recommended
Isolated Sensor Interface
The ADUM1301ARWZ is used to isolate sensor signals in industrial and automotive applications, protecting control electronics from high voltages and noise. Its three channels can isolate sensor data, clock, and control signals. The 1Mbps data rate supports most sensor interfaces, including I2C (with level shifting) and SPI. The high CMTI ensures reliable operation in environments with motor drives and other noise sources. The wide supply range allows direct connection to sensors operating at different voltages. The device's small footprint and surface-mount package make it ideal for space-constrained designs. For temperature sensors, the ADUM1301ARWZ can be used with isolated power supplies to achieve complete galvanic isolation.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1301ARWZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1301ARWZ-RL | ADUM1301ARW | ADUM1300ARWZ | ADUM1301BRWZ | ADUM1301CRWZ | ISO7721DW |
|---|---|---|---|---|---|---|---|
| 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) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Channels | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
| Isolation Voltage | 2500Vrms | 2500Vrms | 2500Vrms | 2500Vrms | 2500Vrms | 2500Vrms | 3000Vrms |
| Data Rate | 1Mbps | 1Mbps | 1Mbps | 1Mbps | 10Mbps | 90Mbps | 100Mbps |
| CMTI | 25kV/Β΅s | 25kV/Β΅s | 25kV/Β΅s | 25kV/Β΅s | 25kV/Β΅s | 25kV/Β΅s | 100kV/Β΅s |
| Propagation Delay (max) | 100ns | 100ns | 100ns | 100ns | 50ns | 32ns | 16ns |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.25V to 5.5V |
Key Differentiators
- iCoupler technology provides superior performance over optocouplers (vs Optocouplers)
- Wide supply voltage range (2.7V to 5.5V) (vs ISO7721DW)
- Three independent channels in a compact SOIC-16 package (vs ISO7721DW)
Design Notes
Place decoupling capacitors (0.1Β΅F and 10Β΅F) close to VDD1 and VDD2 pins to ensure stable supply voltages. Use a solid ground plane on both sides of the isolation barrier, but do not connect the ground planes directly; maintain the isolation gap. Follow the recommended PCB layout in the datasheet to achieve the specified CMTI and isolation performance.
The ADUM1301ARWZ operates from 2.7V to 5.5V on both sides. Ensure that the supply voltages are within the specified range and that the power supply can provide sufficient current for the load. The quiescent current is typically a few milliamps, but check the datasheet for exact values. Use low-ESR capacitors for decoupling to minimize voltage ripple.
Do not exceed the absolute maximum ratings, including isolation voltage and supply voltage. Ensure that the input signals do not exceed the supply voltage range. Avoid floating inputs by tying unused inputs to GND or VDD. Also, be aware that the ADUM1301ARWZ has a 3/0 channel configuration (all three channels forward); for different configurations, consider other ADuM130x variants.
Compliance Information
RoHS compliant per product documentation. Other compliance information not specified in the provided data.
