Overview
The ADUM3201ARZ, 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 ADUM3201ARZ avoids issues such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects commonly associated with optocouplers. This results in stable and reliable digital interfaces with reduced power consumption, typically one-tenth to one-sixth of that 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 | 1.1 | 1.2 | Mbps |
Key Features
- Dual-Channel Isolation: The ADUM3201ARZ provides two independent isolation channels, ensuring high reliability and performance in various applications.
- iCoupler Technology: Utilizes Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic transformer technology to eliminate the need for LEDs and photodiodes, thus avoiding common optocoupler issues.
- Low Power Consumption: Consumes significantly less power compared to optocouplers, typically one-tenth to one-sixth at comparable signal data rates.
- High Speed and Low Latency: Supports data rates up to 1 Mbps and offers low propagation delay, making it suitable for high-speed applications.
- High Common-Mode Transient Immunity: Offers a common-mode transient immunity of up to 35 kV/µs, ensuring robust performance in noisy environments.
- Wide Operating Temperature Range: Operates over a temperature range of -40°C to +105°C, making it suitable for a variety of industrial and automotive applications.
Applications
- Industrial I/O and Control Systems: Ideal for isolating digital signals in industrial control systems, ensuring reliable and safe operation.
- Automotive Interfaces: Suitable for use in automotive systems such as CAN, audio, and Ethernet interfaces due to its high reliability and robustness.
- Medical Devices: Used in medical devices where high isolation and low power consumption are critical.
- Power Supply and DC-DC Converters: Can be used to isolate feedback signals in power supply and DC-DC converter applications.
- Communication Systems: Applicable in various communication systems including RS-232, RS-422, RS-485, and USB interfaces.
Q & A
- What is the ADUM3201ARZ based on?
The ADUM3201ARZ is based on Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic transformer technology.
- What are the key advantages of the ADUM3201ARZ over optocouplers?
The ADUM3201ARZ offers stable performance, lower power consumption, and avoids issues like uncertain current transfer ratios and nonlinear transfer functions associated with optocouplers.
- What is the maximum data rate supported by the ADUM3201ARZ?
The ADUM3201ARZ supports data rates up to 1 Mbps.
- What is the common-mode transient immunity of the ADUM3201ARZ?
The ADUM3201ARZ has a common-mode transient immunity of up to 35 kV/µs.
- What is the operating temperature range of the ADUM3201ARZ?
The ADUM3201ARZ operates over a temperature range of -40°C to +105°C.
- What are some typical applications of the ADUM3201ARZ?
Typical applications include industrial I/O, automotive interfaces, medical devices, power supply and DC-DC converters, and various communication systems.
- How does the ADUM3201ARZ reduce power consumption compared to optocouplers?
The ADUM3201ARZ consumes significantly less power, typically one-tenth to one-sixth of that of optocouplers at comparable signal data rates.
- What is the package type of the ADUM3201ARZ?
The ADUM3201ARZ is available in an 8-pin SOIC package.
- Is the ADUM3201ARZ RoHS compliant?
Yes, the ADUM3201ARZ is RoHS compliant.
- What are the supply voltage ranges for the ADUM3201ARZ?
The ADUM3201ARZ operates with supply voltage ranges of 3.0 V to 3.6 V and 4.5 V to 5.5 V for the two channels.
