Overview
The ADUM3201BRZ, produced by Analog Devices Inc., is a dual-channel digital isolator based on the company's iCoupler® technology. This component combines high-speed CMOS and monolithic transformer technology to provide superior performance characteristics compared to traditional optocoupler devices. By eliminating the use of LEDs and photodiodes, the ADUM3201BRZ avoids issues such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects commonly associated with optocouplers. This results in stable performance and reduced power consumption, with the device consuming one-tenth to one-sixth the power of optocouplers at comparable signal data rates.
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) | 0.4 | 0.8 | mA | VIA = VIB = 0 V | |
| Quiescent Output Supply Current | IDDO(Q) | 0.5 | 0.6 | mA | VIA = VIB = 0 V | |
| Dynamic Input Supply Current | IDDI(D) | 0.19 | mA/Mbps | |||
| Dynamic Output Supply Current | IDDO(D) | 0.05 | mA/Mbps | |||
| Common-Mode Transient Immunity | |CM| | 25 | 35 | kV/µs | VIx = VDDX, VCM = 1000 V, transient magnitude = 800 V | |
| Refresh Rate | fr | 1.2 | Mbps |
Key Features
- Dual-Channel Isolation: Provides two independent isolation channels, enhancing system reliability and reducing component count.
- iCoupler Technology: Utilizes high-speed CMOS and monolithic transformer technology, eliminating the need for LEDs and photodiodes and their associated issues.
- Low Power Consumption: Consumes significantly less power compared to optocouplers, with dynamic input and output supply currents as low as 0.19 mA/Mbps and 0.05 mA/Mbps, respectively.
- High Common-Mode Transient Immunity: Offers immunity up to 35 kV/µs, ensuring robust performance in noisy environments.
- Enhanced System-Level ESD Reliability: Designed to provide superior ESD protection, enhancing the overall reliability of the system.
Applications
- Industrial I/O: Suitable for industrial control systems, sensors, and actuators where isolation is critical.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces where high reliability and isolation are required.
- Medical Devices: Ideal for medical equipment where isolation is necessary to ensure patient safety and device reliability.
- RS-232 / RS-422 / RS-485 Interfaces: Applicable in serial communication systems where data integrity and isolation are essential.
- IO-Link and Local Interconnect Networks (LIN): Used in industrial communication protocols where reliable data transfer is crucial.
Q & A
- What is the ADUM3201BRZ based on?
The ADUM3201BRZ is based on Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic transformer technology.
- What are the key advantages of the ADUM3201BRZ over optocouplers?
The ADUM3201BRZ offers stable performance, lower power consumption, and eliminates issues such as uncertain current transfer ratios and nonlinear transfer functions associated with optocouplers.
- What is the typical power consumption of the ADUM3201BRZ?
The device consumes significantly less power than optocouplers, with dynamic input and output supply currents as low as 0.19 mA/Mbps and 0.05 mA/Mbps, respectively.
- What is the common-mode transient immunity of the ADUM3201BRZ?
The ADUM3201BRZ offers common-mode transient immunity up to 35 kV/µs.
- What are the typical operating voltage ranges for the ADUM3201BRZ?
The device operates with supply voltages ranging from 3.0 V to 3.6 V for VDD1 and VDD2, and 4.5 V to 5.5 V for VDD1 in mixed 5 V/3.3 V operation.
- What are some common applications of the ADUM3201BRZ?
The ADUM3201BRZ is used in industrial I/O, automotive interfaces, medical devices, RS-232 / RS-422 / RS-485 interfaces, and IO-Link and LIN networks.
- How many isolation channels does the ADUM3201BRZ provide?
The ADUM3201BRZ provides two independent isolation channels.
- What is the refresh rate of the ADUM3201BRZ?
The refresh rate of the ADUM3201BRZ is up to 1.2 Mbps.
- Does the ADUM3201BRZ require external drivers or discrete components?
No, the ADUM3201BRZ does not require external drivers or discrete components, simplifying the design process.
- What is the package type of the ADUM3201BRZ?
The ADUM3201BRZ is available in an SOIC-8 package.
