Overview
The ADUM1447ARQZ is a micropower, quad-channel digital isolator produced by Analog Devices Inc. It utilizes the iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technologies. This device is designed to provide high isolation voltages and low power consumption, making it an ideal choice for applications requiring reliable and efficient signal isolation.
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 | VDDx = VDD1 or VDD2 |
Key Features
- High-Speed Operation: The ADUM1447ARQZ supports data rates up to several Mbps with low pulse width distortion (<8 ns).
- Low Power Consumption: The device operates with supplies as low as 2.25 V and consumes less than 10 µA per channel in standard operating mode, and less than 1 µA per channel when internal refresh is disabled.
- High Isolation Voltage: The device withstands 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 nearly 70% of board space compared to wide body SOIC packages.
- Input Glitch Filter: Built-in input glitch filter to protect against extraneous noise disturbances.
Applications
- Industrial Control Systems: Suitable for use in industrial control systems where high isolation and low power consumption are critical.
- Medical Devices: Can be used in medical devices requiring high isolation and reliability.
- Automotive Systems: Applicable in automotive systems where robust and efficient signal isolation is necessary.
- Data Acquisition Systems: Ideal for data acquisition systems that require high-speed and reliable signal isolation.
Q & A
- What is the ADUM1447ARQZ? The ADUM1447ARQZ is a micropower, quad-channel digital isolator produced by Analog Devices Inc.
- What technology does the ADUM1447ARQZ use? It uses the iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technologies.
- What are the typical supply currents for the ADUM1447ARQZ? The quiescent supply current per channel is less than 10 µA when ENx = 0 and less than 1 µA when ENx = 1.
- What is the maximum data rate supported by the ADUM1447ARQZ? The device supports data rates up to several Mbps.
- What is the isolation voltage rating of the ADUM1447ARQZ? The device withstands high isolation voltages up to 2.5 kV.
- What are the package options for the ADUM1447ARQZ? It is available in 16-lead QSOP and 20-lead SSOP packages.
- Does the ADUM1447ARQZ have any built-in noise protection features? Yes, it has an input glitch filter to protect against extraneous noise disturbances.
- What are some common applications for the ADUM1447ARQZ? It is suitable for industrial control systems, medical devices, automotive systems, and data acquisition systems.
- What regulatory standards does the ADUM1447ARQZ meet? It meets regulatory requirements such as UL and CSA standards.
- How does the ADUM1447ARQZ save board space? It saves nearly 70% of board space compared to wide body SOIC packages.
