Overview
The ADUM121N1BRZ-RL7 is a dual-channel digital isolator produced by Analog Devices Inc., utilizing the company's iCoupler technology. This component combines high-speed performance with complementary metal-oxide semiconductor (CMOS) and monolithic air core transformer technology, offering superior isolation characteristics compared to optocoupler devices and other integrated couplers. The ADUM121N1BRZ-RL7 is designed to provide reliable and high-speed data transfer across an isolation barrier, making it suitable for a variety of applications requiring electrical isolation and data integrity.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Withstand Voltage | - | - | 3 kV rms | - | - | See Ordering Guide |
| Supply Voltage | VDDx | 1.8 | - | 5 | V | On either side |
| Propagation Delay | tP | - | - | 13 ns | - | Maximum |
| Pulse Width Distortion | tPWD | - | - | 3 ns | - | At 5 V operation |
| Channel Matching | - | - | - | 3.0 ns | - | Maximum |
| Dynamic Supply Current (Side 1) | IDD1 | 2.4 | 4.7 | 8.0 | mA | 50% duty cycle signals |
| Dynamic Supply Current (Side 2) | IDD2 | 2.9 | 4.9 | 7.7 | mA | 50% duty cycle signals |
| Output Rise/Fall Time | tR/tF | 2.5 | - | - | ns | 10% to 90% |
| Common-Mode Transient Immunity | |CMH|, |CML| | 75 | - | 100 | kV/µs | Transient magnitude = 800 V |
Key Features
- High-Speed Data Transfer: The ADUM121N1BRZ-RL7 supports data rates up to 150 Mbps with a maximum propagation delay of 13 ns and a pulse width distortion of less than 3 ns at 5 V operation.
- Electrical Isolation: Provides a withstand voltage rating of 3 kV rms, ensuring reliable isolation between the two sides of the device.
- Voltage Translation: Operates with supply voltages ranging from 1.8 V to 5 V on either side, enabling voltage translation across the isolation barrier.
- Fail-Safe Options: Available in configurations where the outputs transition to a predetermined state when the input power supply is not applied or the inputs are disabled.
- Low Power Consumption: Features low dynamic supply current, making it suitable for power-sensitive applications.
Applications
- Industrial I/O: Suitable for industrial control systems and automation where electrical isolation is critical.
- Automotive Interfaces: Can be used in automotive systems such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Applicable in medical devices requiring high isolation and data integrity.
- Powerline Communications: Useful in powerline communication systems where isolation is necessary.
- General Digital Isolation Needs: Any application requiring reliable and high-speed digital isolation, such as in controllers, expanders, and signal integrity solutions).
Q & A
- What is the maximum withstand voltage of the ADUM121N1BRZ-RL7?
The ADUM121N1BRZ-RL7 has a maximum withstand voltage of 3 kV rms. - What are the supported supply voltage ranges for the ADUM121N1BRZ-RL7?
The device operates with supply voltages ranging from 1.8 V to 5 V on either side. - What is the maximum propagation delay of the ADUM121N1BRZ-RL7?
The maximum propagation delay is 13 ns. - What is the data rate supported by the ADUM121N1BRZ-RL7?
The device supports data rates up to 150 Mbps. - Does the ADUM121N1BRZ-RL7 offer fail-safe options?
Yes, the device is available in configurations where the outputs transition to a predetermined state when the input power supply is not applied or the inputs are disabled. - What are some common applications of the ADUM121N1BRZ-RL7?
The device is suitable for industrial I/O, automotive interfaces, medical devices, powerline communications, and general digital isolation needs. - How does the ADUM121N1BRZ-RL7 achieve electrical isolation?
The device uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic air core transformer technology. - What is the typical dynamic supply current for the ADUM121N1BRZ-RL7?
The typical dynamic supply current is around 4.7 mA for side 1 and 4.9 mA for side 2 with 50% duty cycle signals. - Does the ADUM121N1BRZ-RL7 support voltage translation?
Yes, the device can operate with different supply voltages on either side, enabling voltage translation across the isolation barrier. - What is the common-mode transient immunity of the ADUM121N1BRZ-RL7?
The device has a common-mode transient immunity of 75 to 100 kV/µs.
