Overview
The ADUM2281ARIZ is a 5 kV rms dual-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to optocoupler devices and other integrated couplers.
The ADUM2281ARIZ is designed to offer high isolation voltage, low propagation delay, and low dynamic power consumption, making it suitable for a variety of applications requiring reliable and efficient data isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Isolation Voltage | Vrms | - | - | 5000 | Vrms | - |
| Data Rate | - | - | - | Up to 100 | Mbps | - |
| Propagation Delay | tP | - | - | 24 | ns | - |
| Supply Voltage | VDDx | 3.0 | - | 5.5 | V | - |
| 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 | - |
| Undervoltage Lockout Positive Threshold | VDDxUV+ | 2.6 | - | - | V | - |
| Undervoltage Lockout Negative Threshold | VDDxUV- | 2.4 | - | - | V | - |
| Undervoltage Lockout Hysteresis | VDDxUVH | 0.2 | - | - | V | - |
Key Features
- High Isolation Voltage: 5000 V rms, ensuring robust electrical isolation between channels.
- High-Speed Data Rate: Up to 100 Mbps, supporting fast data transmission.
- Low Propagation Delay: Maximum of 24 ns, minimizing signal delay.
- Low Dynamic Power Consumption: Efficient power usage, especially during high-speed operations.
- Bidirectional Communication: Supports bidirectional data transfer across the isolation barrier.
- Refresh Feature: Ensures dc correctness in the absence of input logic transitions.
- Default Output States: Default high output for ADUM2280/ADUM2281 and default low output for ADUM2285/ADUM2286 when power is first applied or not yet applied to the input side.
Applications
- Medical Equipment: Ensures safety and reliability in medical devices by providing high isolation voltage.
- Power Supplies: Used in power supply designs to isolate control signals and ensure safe operation.
- RS-232/RS-422/RS-485 Transceiver Isolation: Ideal for isolating communication signals in serial communication systems.
- Industrial Control Systems: Provides reliable isolation in industrial control environments.
Q & A
- What is the isolation voltage of the ADUM2281ARIZ?
The ADUM2281ARIZ has an isolation voltage of 5000 V rms.
- What are the possible data rates for the ADUM2281ARIZ?
The ADUM2281ARIZ supports data rates up to 100 Mbps.
- What is the maximum propagation delay of the ADUM2281ARIZ?
The maximum propagation delay is 24 ns.
- What is the supply voltage range for the ADUM2281ARIZ?
The supply voltage range is from 3.0 V to 5.5 V.
- Does the ADUM2281ARIZ support bidirectional communication?
Yes, the ADUM2281ARIZ supports bidirectional communication.
- What is the default output state of the ADUM2281ARIZ when power is first applied or not yet applied to the input side?
The ADUM2281ARIZ has a default high output when power is first applied or not yet applied to the input side.
- What is the quiescent input supply current of the ADUM2281ARIZ?
The quiescent input supply current is typically 0.8 mA.
- What is the dynamic input supply current per Mbps for the ADUM2281ARIZ?
The dynamic input supply current is typically 0.09 mA/Mbps.
- In which applications is the ADUM2281ARIZ commonly used?
The ADUM2281ARIZ is commonly used in medical equipment, power supplies, RS-232/RS-422/RS-485 transceiver isolation, and industrial control systems.
- What technology does the ADUM2281ARIZ use for isolation?
The ADUM2281ARIZ uses Analog Devices' iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technology.
