Overview
The ADUM1445ARSZ-RL7 is a quad-channel digital isolator produced by Analog Devices Inc. This component utilizes the iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technologies to provide superior isolation and performance characteristics. It is designed to operate with low power consumption and high isolation voltages, making it suitable for a variety of applications requiring reliable and efficient data transfer between isolated circuits.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Input Threshold Logic High | VIH | 0.7 VDDx | VDDx | V | ||
| Input Threshold Logic Low | VIL | 0.3 VDDx | VDDx | V | ||
| Output Voltages Logic High | VOH | VDDx - 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 ≤ VDDx |
| Supply Current per Channel (Quiescent) | IDDI (Q) | 2.6 | 3.3 | µA | ENX low | |
| Supply Current per Channel (Quiescent) - Refresh Off | IDDI (Q) | 0.05 | µA | ENX high | ||
| Output Rise Time/Fall Time | tR/tF | 2 | 10 | ns | 10% to 90% | |
| Common-Mode Transient Immunity | |CM| | 25 | 40 | kV/µs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V | |
| Refresh Rate | fr | 14 | kbps | VDDx = VDD1 or VDD2 | ||
| Isolation Voltage | 2500 | Vrms | ||||
| Package Type | 20-Pin SSOP |
Key Features
- Low Power Consumption: The ADUM1445ARSZ-RL7 operates with quiescent current as low as 0.05 µA per channel when the internal refresh is disabled, making it highly energy-efficient.
- High Isolation Voltage: The device withstands high isolation voltages up to 2.5 kVrms, meeting regulatory requirements such as UL and CSA standards.
- High Speed and Low Distortion: It offers data rates up to 2 Mbps with low pulse width distortion of less than 8 ns, ensuring reliable data transfer.
- Input Glitch Filter: Each model includes an input glitch filter to protect against extraneous noise disturbances.
- Compact Packaging: Available in a 20-pin SSOP package, which saves almost 70% of board space compared to wide body SOIC packages.
Applications
The ADUM1445ARSZ-RL7 is versatile and can be used in various applications, including:
- Industrial I/O and Control Systems: For isolating signals in industrial environments to ensure safety and reliability.
- Automotive Interfaces: Suitable for use in automotive systems such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Where high isolation and low power consumption are critical.
- Industrial Automation and IoT Devices: For isolating digital signals in IoT and automation applications to prevent noise and ensure data integrity.
Q & A
- What is the ADUM1445ARSZ-RL7 used for? The ADUM1445ARSZ-RL7 is a quad-channel digital isolator used to isolate digital signals between different voltage domains, ensuring safety and reliability in various applications.
- What is the maximum data rate of the ADUM1445ARSZ-RL7? The maximum data rate of the ADUM1445ARSZ-RL7 is 2 Mbps.
- What is the isolation voltage of the ADUM1445ARSZ-RL7? The isolation voltage of the ADUM1445ARSZ-RL7 is up to 2.5 kVrms.
- What package type is the ADUM1445ARSZ-RL7 available in? The ADUM1445ARSZ-RL7 is available in a 20-pin SSOP package.
- How much power does the ADUM1445ARSZ-RL7 consume? The ADUM1445ARSZ-RL7 consumes very low power, with quiescent current as low as 0.05 µA per channel when the internal refresh is disabled.
- Does the ADUM1445ARSZ-RL7 have any built-in noise protection features? Yes, the ADUM1445ARSZ-RL7 includes an input glitch filter to protect against extraneous noise disturbances.
- What are some common applications of the ADUM1445ARSZ-RL7? Common applications include industrial I/O and control systems, automotive interfaces, medical devices, and industrial automation and IoT devices.
- What regulatory standards does the ADUM1445ARSZ-RL7 meet? The ADUM1445ARSZ-RL7 meets regulatory requirements such as UL and CSA standards.
- How does the ADUM1445ARSZ-RL7 save board space? The ADUM1445ARSZ-RL7 saves almost 70% of board space compared to wide body SOIC packages.
- What technology does the ADUM1445ARSZ-RL7 use for isolation? The ADUM1445ARSZ-RL7 uses iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technologies.
