Overview
The ADUM1441ARSZ is a micropower, 4-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technologies. This design provides superior performance characteristics compared to traditional optocoupler devices. The ADUM1441ARSZ is known for its ultralow power operation, high isolation voltage, and compact packaging, making it an ideal choice for various industrial and automotive applications.
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, VDDx = 3.3 V |
| Supply Current per Channel (Quiescent, Refresh Off) | IDDI (Q) | - | - | 0.05 | µA | ENX high |
| Dynamic Supply Current per Channel | IDDI (D) | - | - | 76 | µA/Mbps | - |
| Output Rise Time/Fall Time | tR/tF | - | - | 2 | ns | 10% to 90% |
| Common-Mode Transient Immunity | |CM| | - | - | 25 | kV/µs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
| Refresh Rate | fr | - | - | 14 | kbps | - |
Key Features
- Ultralow Power Operation: The ADUM1441ARSZ operates with very low quiescent current, typically 5.6 µA per channel with refresh enabled and 0.3 µA per channel with refresh disabled.
- High Isolation Voltage: The device can withstand high isolation voltages up to 2.5 kV and meets regulatory requirements such as UL and CSA standards.
- Compact Packaging: Available in 16-lead QSOP and 20-lead SSOP packages, saving up to 70% of board space compared to wide body SOIC packages.
- Low Pulse Width Distortion: The device ensures low pulse width distortion of less than 8 ns, ensuring high fidelity signal transmission.
- Input Glitch Filter: Built-in input glitch filters protect against extraneous noise disturbances.
- Flexible Supply Voltage: Operates with supply voltages as low as 2.25 V, making it versatile for various applications.
Applications
- Industrial I/O: Suitable for industrial control systems, sensors, and actuators due to its high isolation and low power consumption.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces where high reliability and isolation are critical.
- Medical Devices: Ideal for medical devices requiring high isolation to ensure patient safety and compliance with medical standards.
- Powerline Communications: Can be used in powerline communication systems where isolation between the power line and the communication circuit is necessary).
Q & A
- What is the ADUM1441ARSZ?
The ADUM1441ARSZ is a 4-channel digital isolator produced by Analog Devices Inc., utilizing iCoupler technology for high-speed and low-power isolation.
- What are the key features of the ADUM1441ARSZ?
Key features include ultralow power operation, high isolation voltage, compact packaging, low pulse width distortion, and built-in input glitch filters.
- What are the typical supply currents for the ADUM1441ARSZ?
The quiescent current is typically 5.6 µA per channel with refresh enabled and 0.3 µA per channel with refresh disabled.
- What is the maximum data rate of the ADUM1441ARSZ?
The maximum data rate is 2 Mbps.
- What types of packages are available for the ADUM1441ARSZ?
The device is available in 16-lead QSOP and 20-lead SSOP packages.
- What is the common-mode transient immunity of the ADUM1441ARSZ?
The common-mode transient immunity is up to 25 kV/µs.
- What are some typical applications of the ADUM1441ARSZ?
Typical applications include industrial I/O, automotive interfaces, medical devices, and powerline communications.
- Does the ADUM1441ARSZ meet any regulatory standards?
Yes, it meets regulatory requirements such as UL and CSA standards.
- What is the refresh rate of the ADUM1441ARSZ?
The refresh rate is 14 kbps.
- How does the ADUM1441ARSZ protect against noise disturbances?
The device has built-in input glitch filters to protect against extraneous noise disturbances.
