Overview
The ADUM2201ARWZ, produced by Analog Devices Inc., is a 2-channel digital isolator based on the iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology to provide superior isolation performance compared to traditional optocoupler devices. By eliminating the use of LEDs and photodiodes, the ADUM2201ARWZ avoids issues such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects commonly associated with optocouplers. This makes it an ideal choice for applications requiring reliable and high-speed data isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Logic High Input Threshold | VIH | 0.7 VDDx | V | |||
| Logic Low Input Threshold | VIL | 0.3 VDDx | V | |||
| Logic High Output Voltages | VOH | VDDx - 0.1 | VDDx - 0.5 | VDDx - 0.2 | V | IOx = -20 µA, VIx = VIxH |
| Logic Low Output Voltages | VOL | 0.0 | 0.1 | 0.2 | V | IOx = 20 µA, VIx = VIxL |
| Input Current per Channel | II | -10 | 0.01 | 10 | µA | 0 V ≤ VIx ≤ VDDx |
| Quiescent Input Supply Current | IDDI (Q) | 0.3 | 0.5 | mA | All inputs at logic low | |
| Quiescent Output Supply Current | IDDO (Q) | 0.5 | 0.6 | mA | All inputs at logic low | |
| Dynamic Input Supply Current | IDDI (D) | 0.10 | mA/Mbps | |||
| Dynamic Output Supply Current | IDDO (D) | 0.05 | mA/Mbps | |||
| Output Rise/Fall Time | tR/tF | 10 ns (A Grade) | 2.5 ns (B Grade) | ns | 10% to 90% | |
| Common-Mode Transient Immunity | |CM| | 25 kV/µs | 35 kV/µs | kV/µs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
Key Features
- High-Speed Data Isolation: The ADUM2201ARWZ offers high-speed data isolation with output rise/fall times as low as 2.5 ns for B Grade and 10 ns for A Grade.
- iCoupler Technology: Utilizes iCoupler technology, which combines high-speed CMOS and monolithic air core transformer technology, eliminating the need for LEDs and photodiodes.
- Refresh Feature: Includes a patented refresh feature to ensure dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
- Enhanced ESD Protection: Contains various circuit and layout enhancements to provide increased capability relative to system-level IEC 61000-4-x testing (ESD, burst, and surge).
- Low Power Consumption: Features low quiescent and dynamic supply currents, making it suitable for power-sensitive applications.
Applications
- Industrial I/O: Suitable for industrial control systems and automation.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces.
- Hybrid Electric Vehicles and Battery Monitors: Ideal for applications in hybrid electric vehicles and battery monitoring systems.
- Motor Drives: Applied in motor drive systems requiring high-speed data isolation.
- RS-232/RS-422/RS-485 Transceivers: Used for isolating RS-232, RS-422, and RS-485 transceivers.
Q & A
- What is the ADUM2201ARWZ based on?
The ADUM2201ARWZ is based on Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technology.
- What are the key advantages of iCoupler technology over optocouplers?
iCoupler technology eliminates the use of LEDs and photodiodes, avoiding issues such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects.
- What is the refresh feature in the ADUM2201ARWZ?
The refresh feature ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
- What are the output rise/fall times for the ADUM2201ARWZ?
The output rise/fall times are 10 ns for A Grade and 2.5 ns for B Grade.
- What is the common-mode transient immunity of the ADUM2201ARWZ?
The common-mode transient immunity is up to 35 kV/µs.
- What are some typical applications of the ADUM2201ARWZ?
Typical applications include industrial I/O, automotive interfaces, hybrid electric vehicles, battery monitors, motor drives, and RS-232/RS-422/RS-485 transceivers.
- How does the ADUM2201ARWZ enhance ESD protection?
The component contains various circuit and layout enhancements to provide increased capability relative to system-level IEC 61000-4-x testing (ESD, burst, and surge).
- What are the quiescent and dynamic supply currents of the ADUM2201ARWZ?
The quiescent input supply current is 0.3 mA to 0.5 mA, and the dynamic input supply current is 0.10 mA/Mbps.
- Is the ADUM2201ARWZ suitable for power-sensitive applications?
Yes, it is suitable due to its low quiescent and dynamic supply currents.
- Where can I find more detailed specifications and application notes for the ADUM2201ARWZ?
You can find detailed specifications and application notes on the official Analog Devices website and through distributors like Mouser and Digi-Key.
