Overview
The ADUM1245ARSZ is a micropower, 2-channel digital isolator produced by Analog Devices Inc. It is based on the company's iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technologies. This device is designed to provide reliable and efficient isolation solutions with low power consumption and high-speed data transfer capabilities.
The ADUM1245ARSZ is part of the ADuM1240/ADuM1241/ADuM1245/ADuM1246 family, offering flexibility and ease of use through its internal refresh control feature. It is packaged in a 20-lead SSOP, providing 3.75 kV reinforced isolation and meeting various regulatory standards such as UL and CSA.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Voltage - Isolation | - | - | - | 3750 Vrms | - | |
| Common Mode Transient Immunity | |CM| | 25 | - | 40 kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V | |
| Data Rate | - | - | - | 2 Mbps | - | |
| Propagation Delay (tPHL, tPLH) | tPHL, tPLH | 112 | - | 180 ns | 50% input to 50% output | |
| Pulse-Width Distortion (PWD) | PWD | - | - | 12 ns | |tPLH − tPHL| | |
| Minimum Pulse Width (PW) | PW | - | - | 500 ns | Within PWD limit | |
| Quiescent Current per Channel (Refresh Enabled) | IDD1, IDD2 | 3.1 | - | 16 μA | VDDx = 3.3 V, ENx = 0 | |
| Quiescent Current per Channel (Refresh Disabled) | IDD1, IDD2 | 0.1 | - | 0.3 μA | VDDx = 3.3 V, ENx = 1 | |
| Dynamic Supply Current per Channel | IDD1, IDD2 | 88 | - | - μA/Mbps | VDDx = 3.3 V |
Key Features
- Ultralow Power Operation: The device operates with very low quiescent current, typically 0.3 μA per channel when refresh is disabled and 3.1 μA per channel when refresh is enabled at 3.3 V operation.
- High-Speed Data Transfer: Supports data rates up to 2 Mbps with low propagation delay and pulse-width distortion.
- High Common-Mode Transient Immunity: Offers immunity to common-mode transients greater than 25 kV/μs.
- Internal Refresh Control: Allows control over the internal refresh functions, enabling or disabling refresh to optimize power consumption.
- Compact Packaging: Available in a 20-lead SSOP package, providing 3.75 kV reinforced isolation.
- Regulatory Compliance: Meets various regulatory standards including UL, CSA, and VDE certifications.
Applications
- General-Purpose Isolation: Suitable for low-power, multichannel isolation in various applications.
- Industrial I/O: Used in industrial control systems and interfaces such as IO-Link and Local Interconnect Network (LIN) transceivers.
- Automotive Interfaces: Applicable in automotive systems including CAN, audio, and Ethernet interfaces.
- Medical Devices: Can be used in medical devices requiring high isolation and low power consumption.
- Consumer Electronics: Suitable for use in consumer electronics where high-speed data transfer and low power are critical.
Q & A
- What is the ADUM1245ARSZ used for?
The ADUM1245ARSZ is a digital isolator used for providing electrical isolation between two circuits while allowing data transfer between them.
- What is the maximum data rate supported by the ADUM1245ARSZ?
The ADUM1245ARSZ supports data rates up to 2 Mbps.
- What is the typical quiescent current of the ADUM1245ARSZ when refresh is enabled?
The typical quiescent current is 3.1 μA per channel when refresh is enabled at 3.3 V operation.
- What is the common-mode transient immunity of the ADUM1245ARSZ?
The device offers common-mode transient immunity greater than 25 kV/μs.
- What package options are available for the ADUM1245ARSZ?
The ADUM1245ARSZ is available in a 20-lead SSOP package.
- Does the ADUM1245ARSZ meet any regulatory standards?
Yes, it meets various regulatory standards including UL, CSA, and VDE certifications.
- What is the purpose of the internal refresh control feature in the ADUM1245ARSZ?
The internal refresh control feature allows users to enable or disable the refresh function to optimize power consumption.
- What is the maximum operating temperature of the ADUM1245ARSZ?
The device can operate up to a temperature of 125°C.
- Is the ADUM1245ARSZ RoHS compliant?
Yes, the ADUM1245ARSZ is RoHS compliant.
- What are some typical applications of the ADUM1245ARSZ?
Typical applications include industrial I/O, automotive interfaces, medical devices, and consumer electronics.
