Overview
The ADUM221N1BRWZ is a dual-channel digital isolator produced by Analog Devices Inc., utilizing their proprietary iCoupler® technology. This component is designed to provide high-speed digital isolation, ensuring robust and reliable communication between two isolated domains. The ADUM221N1BRWZ is part of the ADuM220N/ADuM221N/ADuM225N/ADuM226N family, which is known for its high common-mode transient immunity and low propagation delay, making it suitable for a wide range of applications that require high reliability and performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD1, VDD2) | 2.25 | - | 2.75 | V | -40°C ≤ TA ≤ +125°C |
| Supply Current (IDD1, IDD2) at 2.5V | 2.5 | 4.6 | 8.1 | mA | 50% duty cycle signals |
| Propagation Delay (tPHL, tPLH) | 5.0 | - | 15 | ns | For 5V operation: 13ns max, for 1.8V operation: 15ns max |
| Data Rate | - | - | 150 | Mbps | - |
| Common-Mode Transient Immunity | 75 | 100 | - | kV/µs | VCM = 1000 V, transient magnitude = 800 V |
| Output Rise/Fall Time (tR/tF) | - | - | 2.5 | ns | 10% to 90% |
| UL Recognition | - | - | 5000 | Vrms | For 1 minute per UL 1577 |
Key Features
- High Common-Mode Transient Immunity: Up to 100 kV/µs, ensuring robustness against radiated and conducted noise.
- Low Propagation Delay: Maximum of 13 ns for 5V operation and 15 ns for 1.8V operation, facilitating high-speed data transfer.
- High Data Rate: Supports up to 150 Mbps, making it suitable for high-speed applications.
- Safety and Regulatory Approvals: UL recognition for 5000 Vrms for 1 minute per UL 1577 and CSA certification per IEC 62368-1.
- Undervoltage Lockout (UVLO): Ensures the device operates within specified voltage ranges, enhancing reliability).
Applications
- Industrial I/O: Suitable for industrial control systems and automation where high reliability and isolation are critical.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces).
- Medical Devices: Applicable in medical devices requiring high isolation and safety standards).
- RS-232 / RS-422 / RS-485 Interfaces: Ideal for serial communication interfaces that need isolation).
- Powerline Communications: Used in powerline communication systems to ensure reliable data transmission).
Q & A
- What is the ADUM221N1BRWZ used for?
The ADUM221N1BRWZ is a dual-channel digital isolator used to provide high-speed digital isolation between two isolated domains, ensuring robust and reliable communication.
- What is the maximum data rate supported by the ADUM221N1BRWZ?
The ADUM221N1BRWZ supports a maximum data rate of 150 Mbps.
- What is the common-mode transient immunity of the ADUM221N1BRWZ?
The common-mode transient immunity is up to 100 kV/µs.
- What are the supply voltage ranges for the ADUM221N1BRWZ?
The supply voltage ranges are 2.25V to 2.75V for both VDD1 and VDD2.
- Does the ADUM221N1BRWZ have any safety and regulatory approvals?
Yes, it has UL recognition for 5000 Vrms for 1 minute per UL 1577 and CSA certification per IEC 62368-1.
- What is the propagation delay of the ADUM221N1BRWZ?
The propagation delay is a maximum of 13 ns for 5V operation and 15 ns for 1.8V operation.
- What is the output rise/fall time of the ADUM221N1BRWZ?
The output rise/fall time is 2.5 ns from 10% to 90%.
- Is the ADUM221N1BRWZ suitable for industrial applications?
Yes, it is suitable for industrial control systems and automation due to its high reliability and isolation capabilities.
- What is the undervoltage lockout (UVLO) threshold for the ADUM221N1BRWZ?
The positive UVLO threshold is 1.6V, and the negative UVLO threshold is 1.5V with a hysteresis of 0.1V.
- Can the ADUM221N1BRWZ be used in automotive systems?
Yes, it can be used in automotive systems such as CAN, audio, and Ethernet interfaces.
