Overview
The ADUM1445ARQZ-RL7 is a quad-channel, micropower digital isolator produced by Analog Devices Inc. This component leverages Analog Devices' iCoupler® technology, which combines high-speed complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies. This integration provides outstanding performance characteristics, surpassing traditional optocoupler devices. The ADUM1445 is designed to offer low power consumption, high speed, and robust isolation, making it ideal for various industrial and communication applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Input Threshold Logic High | VIH | 0.7 VDDx | VDDx | V | Logic High | |
| Input Threshold Logic Low | VIL | 0.3 VDDx | VDDx | V | Logic Low | |
| Output Voltages Logic High | VOH | VDDx1 - 0.1 | 3.3 | V | IOUTx = -20 µA, VIx = VIxH | |
| Output Voltages Logic Low | VOL | 0.0 | 0.1 | V | IOUTx = 20 µA, VIx = VIxL | |
| Input Current per Channel | II | -1 | 0.01 | 1 | µA | 0 V ≤ VIx ≤ VDDx1 |
| Supply Current per Channel (Quiescent) | IDDI (Q) | 2.6 | 3.3 | µA | ENX low | |
| Output Rise Time/Fall Time | tR/tF | 2 | 10 | ns | 10% to 90% | |
| Common-Mode Transient Immunity | |CM| | 25 | 40 | 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 ADUM1445ARQZ-RL7 operates with output rise and fall times of less than 10 ns, ensuring high-speed data transfer.
- Low Power Consumption: The device features low quiescent current, with 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 component withstands high 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 wide body SOIC packages.
- Input Glitch Filter: Includes an input glitch filter to protect against extraneous noise disturbances.
- Low Supply Voltage: Operates with supplies as low as 2.25 V.
Applications
- Industrial I/O: Suitable for industrial control systems, sensors, and actuators.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Applicable in medical equipment where high isolation and low power consumption are critical.
- Communication Systems: Employed in serial bus buffers, extenders, and accelerators for RS-232, RS-422, RS-485, and other communication protocols.
- IO-Link and Local Interconnect Networks (LIN): Compatible with IO-Link and LIN transceivers for industrial automation.
Q & A
- What is the ADUM1445ARQZ-RL7 used for?
The ADUM1445ARQZ-RL7 is a quad-channel digital isolator used to provide electrical isolation between different parts of a system while maintaining high-speed data transfer.
- What technology does the ADUM1445ARQZ-RL7 use?
The ADUM1445ARQZ-RL7 uses Analog Devices' iCoupler® technology, combining CMOS and monolithic air core transformer technologies.
- What are the key benefits of the ADUM1445ARQZ-RL7 over optocouplers?
The ADUM1445ARQZ-RL7 offers higher speed, lower power consumption, and better immunity to noise compared to traditional optocouplers.
- What is the maximum isolation voltage of the ADUM1445ARQZ-RL7?
The ADUM1445ARQZ-RL7 can withstand isolation voltages up to 2.5 kV.
- What are the typical supply voltages for the ADUM1445ARQZ-RL7?
The device operates with supplies as low as 2.25 V.
- How much current does the ADUM1445ARQZ-RL7 consume per channel?
In standard operating mode, the current per channel is less than 10 µA, and when internal refresh is disabled, it drops to less than 1 µA.
- What is the output rise and fall time of the ADUM1445ARQZ-RL7?
The output rise and fall times are less than 10 ns.
- Does the ADUM1445ARQZ-RL7 have any built-in noise protection features?
Yes, it includes an input glitch filter to protect against extraneous noise disturbances.
- In what packages is the ADUM1445ARQZ-RL7 available?
The device is available in 16-lead QSOP and 20-lead SSOP packages.
- What regulatory standards does the ADUM1445ARQZ-RL7 meet?
The device meets regulatory requirements such as UL and CSA standards.
