Overview
The ADUM2201BRWZ is a 2-channel digital isolator produced by Analog Devices Inc., utilizing the company's proprietary iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology to provide superior isolation performance compared to traditional optocoupler devices. The ADUM2201BRWZ eliminates the design challenges associated with optocouplers, such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. It features a patented refresh mechanism to ensure DC correctness even in the absence of input logic transitions and during power-up/power-down conditions.
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 |
| Supply Current per Channel (Quiescent Input) | IDDI (Q) | 0.3 | 0.5 | mA | All inputs at logic low | |
| Supply Current per Channel (Quiescent Output) | 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 (10% to 90%) | tR/tF | 10 ns (A Grade) | 2.5 ns (B Grade) | ns | ||
| Common-Mode Transient Immunity | |CM| | 25 | 35 | kV/µs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
Key Features
- iCoupler Technology: Utilizes high-speed CMOS and monolithic air core transformer technology, eliminating the need for LEDs and photodiodes and the associated design challenges.
- High-Speed Data Transfer: Supports data transfer rates up to 1 Mbps with rise and fall times as low as 2.5 ns for B Grade and 10 ns for A Grade.
- Refresh Mechanism: Ensures DC correctness in the absence of input logic transitions and during power-up/power-down conditions.
- High Common-Mode Transient Immunity: Capable of sustaining common-mode voltage slew rates up to 35 kV/µs.
- Enhanced ESD Protection: Designed to meet system-level IEC 61000-4-x testing requirements for ESD, burst, and surge.
Applications
- Hybrid Electric Vehicles: Used in battery management and motor drive systems.
- Battery Monitors: Provides isolation for battery monitoring systems.
- Industrial Automation: Suitable for isolating signals in industrial control systems.
- Medical Devices: Used in medical equipment requiring high isolation and reliability.
- RS-232/RS-422/RS-485 Transceivers: Ideal for isolating communication interfaces.
Q & A
- What is the ADUM2201BRWZ used for?
The ADUM2201BRWZ is a 2-channel digital isolator used to isolate digital signals in various applications, including hybrid electric vehicles, battery monitors, and industrial automation.
- What technology does the ADUM2201BRWZ use?
The ADUM2201BRWZ uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic air core transformer technology.
- What are the key benefits of using iCoupler technology?
iCoupler technology eliminates the use of LEDs and photodiodes, avoiding issues like uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects.
- What is the maximum data transfer rate of the ADUM2201BRWZ?
The ADUM2201BRWZ supports data transfer rates up to 1 Mbps.
- How does the ADUM2201BRWZ handle DC correctness?
The ADUM2201BRWZ features a patented refresh mechanism that ensures DC correctness even in the absence of input logic transitions and during power-up/power-down conditions.
- What level of common-mode transient immunity does the ADUM2201BRWZ offer?
The ADUM2201BRWZ can sustain common-mode voltage slew rates up to 35 kV/µs.
- Is the ADUM2201BRWZ suitable for high ESD environments?
Yes, the ADUM2201BRWZ is designed to meet system-level IEC 61000-4-x testing requirements for ESD, burst, and surge.
- What are some typical applications of the ADUM2201BRWZ?
Typical applications include hybrid electric vehicles, battery monitors, industrial automation, medical devices, and RS-232/RS-422/RS-485 transceivers.
- How does the ADUM2201BRWZ compare to optocouplers?
The ADUM2201BRWZ offers superior performance compared to optocouplers by eliminating issues related to LEDs and photodiodes, such as uncertain current transfer ratios and nonlinear transfer functions.
- Where can I find detailed specifications for the ADUM2201BRWZ?
Detailed specifications can be found in the data sheet available on Analog Devices' official website and through distributors like Digi-Key and Mouser Electronics.
