Overview
The ADUM1281ARZ-RL7 is a dual-channel digital isolator produced by Analog Devices Inc. It utilizes the iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to optocouplers and other integrated couplers. This component is designed for high-speed data transfer and isolation, making it suitable for a variety of industrial and medical applications where electrical isolation is critical.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Data Rate | - | - | 100 | Mbps | NRZ | |
| Propagation Delay | - | 23 | - | ns | - | |
| Logic High Input Threshold | VIH | 0.7 VDDx | - | - | V | |
| Logic Low Input Threshold | VIL | - | - | 0.3 VDDx | V | |
| Logic High Output Voltage | VOH | VDDx - 0.1 VDDx | - | - | V | IOx = -20 µA, VIx = VIxH |
| Logic Low Output Voltage | VOL | - | - | 0.1 V | V | IOx = 20 µA, VIx = VIxL |
| Quiescent Input Supply Current | IDDI(Q) | 0.54 | 0.8 | - | mA | |
| Quiescent Output Supply Current | IDDO(Q) | 1.6 | 2.0 | - | mA | |
| Dynamic Input Supply Current | IDDI(D) | - | 0.09 | - | mA/Mbps | |
| Dynamic Output Supply Current | IDDO(D) | - | 0.04 | - | mA/Mbps | |
| Input-to-Output Resistance | RI-O | 1013 | - | - | Ω | |
| Input-to-Output Capacitance | CI-O | - | - | 2 | pF | f = 1 MHz |
Key Features
- Up to 100 Mbps data rate (NRZ)
- Low propagation delay: 23 ns typical
- Low dynamic power consumption
- Bidirectional communication
- 3.3 V to 5 V level translation
- High temperature operation: up to 125°C
- High common-mode transient immunity: >25 kV/μs
- Tight channel-to-channel matching: 5 ns for C grade
Applications
The ADUM1281ARZ-RL7 is suitable for various applications requiring high-speed data transfer and electrical isolation, including:
- Industrial control systems
- Medical devices
- Automotive systems
- Power supplies and DC-DC converters
- Isolated interface for microcontrollers and other digital circuits
Q & A
- What is the maximum data rate of the ADUM1281ARZ-RL7?
The maximum data rate is up to 100 Mbps (NRZ). - What is the typical propagation delay of the ADUM1281ARZ-RL7?
The typical propagation delay is 23 ns. - Does the ADUM1281ARZ-RL7 support bidirectional communication?
Yes, it supports bidirectional communication. - What is the operating temperature range of the ADUM1281ARZ-RL7?
The operating temperature range is up to 125°C. - What is the common-mode transient immunity of the ADUM1281ARZ-RL7?
The common-mode transient immunity is >25 kV/μs. - What are the supply voltage ranges for the ADUM1281ARZ-RL7?
The supply voltage ranges are 3.3 V to 5 V. - What is the quiescent input supply current of the ADUM1281ARZ-RL7?
The quiescent input supply current is 0.54 mA to 0.8 mA. - What is the input-to-output resistance of the ADUM1281ARZ-RL7?
The input-to-output resistance is 1013 Ω. - What is the input-to-output capacitance of the ADUM1281ARZ-RL7?
The input-to-output capacitance is 2 pF at f = 1 MHz. - Is the ADUM1281ARZ-RL7 approved by regulatory organizations?
Yes, it is approved by various regulatory organizations as listed in the datasheet.
