Overview
The ADUM3201CRZ, produced by Analog Devices Inc., is a dual-channel digital isolator based on the 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 ADUM3201CRZ 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 |
|---|---|---|---|---|---|---|
| Data Rate | - | 1 | 10 | 25 | Mbps | Within PWD limit |
| Propagation Delay | tPHL, tPLH | 15 | 55 | 150 | ns | 50% input to 50% output |
| Pulse Width Distortion | PWD | 3 | 4 | - | ns | |tPLH − tPHL| |
| 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, making it energy-efficient.
- High Common-Mode Transient Immunity: Offers immunity to common-mode transients up to 35 kV/µs, ensuring robust performance in noisy environments.
- Wide Operating Range: Supports operation over a wide temperature range (-40°C to +105°C) and various supply voltages (3.0 V to 5.5 V).
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.
- Medical Devices: Ideal for medical equipment requiring high isolation and low power consumption.
- RS-232 / RS-422 / RS-485 Interfaces: Enhances reliability in serial communication systems.
- Powerline Communications: Applicable in powerline communication systems where isolation is essential.
Q & A
- What is the ADUM3201CRZ based on?
The ADUM3201CRZ is based on Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic transformer technology.
- What are the key advantages of using the ADUM3201CRZ over optocouplers?
The ADUM3201CRZ offers stable performance, lower power consumption, and avoids issues like uncertain current transfer ratios and nonlinear transfer functions associated with optocouplers.
- What is the typical data rate of the ADUM3201CRZ?
The typical data rate of the ADUM3201CRZ is up to 25 Mbps.
- What is the common-mode transient immunity of the ADUM3201CRZ?
The ADUM3201CRZ has a common-mode transient immunity of up to 35 kV/µs.
- What is the operating temperature range of the ADUM3201CRZ?
The ADUM3201CRZ operates over a temperature range of -40°C to +105°C.
- What are the typical supply voltages for the ADUM3201CRZ?
The ADUM3201CRZ supports supply voltages ranging from 3.0 V to 5.5 V.
- How does the ADUM3201CRZ reduce power consumption compared to optocouplers?
The ADUM3201CRZ consumes one-tenth to one-sixth the power of optocouplers at comparable signal data rates.
- What are some common applications of the ADUM3201CRZ?
The ADUM3201CRZ is commonly used in industrial I/O, automotive interfaces, medical devices, and serial communication systems.
- Does the ADUM3201CRZ require external drivers or discrete components?
No, the ADUM3201CRZ does not require external drivers or other discrete components, simplifying the design process.
- What is the refresh rate of the ADUM3201CRZ?
The refresh rate of the ADUM3201CRZ is up to 1.2 Mbps.
