Overview
The ADUM1441ARQZ is a micropower, quad-channel digital isolator produced by Analog Devices Inc. It utilizes the iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technologies to provide superior performance characteristics compared to traditional optocoupler devices. This isolator is designed to operate with low power consumption and high isolation voltages, making it suitable for a variety of applications where electrical isolation is critical.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Input Hysteresis | ΔVT | - | - | 0.5 | V | - |
| Undervoltage Lockout | UVLO | - | - | 1.5 | V | VDD1 or VDD2 |
| Supply Current per Channel (Quiescent) | IDDI (Q) | 2.6 | 3.3 | - | µA | ENX low |
| Supply Current per Channel (Quiescent) | IDDO (Q) | 0.5 | 1.8 | - | µA | ENX low |
| Supply Current per Channel (Refresh Off) | IDDI (Q) | - | - | 0.05 | µA | ENX high |
| Supply Current per Channel (Refresh Off) | IDDO (Q) | - | - | 0.05 | µA | ENX high |
| Dynamic Supply Current | IDDI (D) | - | - | 76 | µA/Mbps | - |
| Dynamic Supply Current | IDDO (D) | - | - | 41 | µA/Mbps | - |
| Output Rise Time/Fall Time | tR/tF | - | - | 2 ns | - | 10% to 90% |
| Common-Mode Transient Immunity | |CM| | - | - | 25 kV/µs | - | VIx = VDDx1, VCM = 1000 V, transient magnitude = 800 V |
| Refresh Rate | fr | - | - | 14 kbps | - | - |
Key Features
- Low Power Consumption: The ADUM1441ARQZ operates with supply currents as low as 0.05 µA per channel when the internal refresh is disabled, making it highly energy-efficient.
- High Isolation Voltage: The device can withstand isolation voltages up to 2.5 kV, meeting regulatory requirements such as UL and CSA standards.
- Compact Packaging: Available in 16-lead QSOP and 20-lead SSOP packages, these isolators save significant board space compared to wider body SOIC packages.
- Low Pulse Width Distortion: The isolator ensures minimal pulse width distortion of less than 8 ns, ensuring high signal integrity.
- Input Glitch Filter: Built-in input glitch filters protect against extraneous noise disturbances, enhancing reliability.
- Flexible Supply Voltages: The device can operate with supply voltages as low as 2.25 V, offering flexibility in system design.
Applications
- Industrial Control Systems: Suitable for use in industrial control systems where electrical isolation is crucial for safety and reliability.
- Medical Devices: Used in medical devices to ensure patient safety by providing high isolation between different parts of the system.
- Automotive Systems: Applied in automotive systems for isolating high-voltage and low-voltage domains.
- Power Supplies and DC-DC Converters: Utilized in power supplies and DC-DC converters to isolate feedback signals and control circuits.
- Data Acquisition Systems: Employed in data acquisition systems to isolate analog and digital signals.
Q & A
- What is the ADUM1441ARQZ?
The ADUM1441ARQZ is a micropower, quad-channel digital isolator produced by Analog Devices Inc., using iCoupler® technology. - What are the key features of the ADUM1441ARQZ?
Key features include low power consumption, high isolation voltage, compact packaging, low pulse width distortion, input glitch filters, and flexible supply voltages. - What are the typical supply currents for the ADUM1441ARQZ?
The quiescent supply current is typically 2.6 µA per channel when the internal refresh is enabled and less than 0.05 µA when disabled. - What is the maximum isolation voltage of the ADUM1441ARQZ?
The device can withstand isolation voltages up to 2.5 kV. - What are the package options for the ADUM1441ARQZ?
The device is available in 16-lead QSOP and 20-lead SSOP packages. - What is the pulse width distortion of the ADUM1441ARQZ?
The pulse width distortion is less than 8 ns. - Does the ADUM1441ARQZ have built-in noise protection?
Yes, it has built-in input glitch filters to protect against extraneous noise disturbances. - What are the minimum and maximum supply voltages for the ADUM1441ARQZ?
The device can operate with supply voltages as low as 2.25 V and up to 5.5 V. - What are some common applications of the ADUM1441ARQZ?
Common applications include industrial control systems, medical devices, automotive systems, power supplies, and data acquisition systems. - Does the ADUM1441ARQZ meet regulatory standards?
Yes, it meets regulatory requirements such as UL and CSA standards.
