Overview
The ADUM1240ARZ is a micropower, 2-channel digital isolator produced by Analog Devices Inc. It utilizes the company's iCoupler® technology, combining high-speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies. This component is designed to provide superior performance characteristics compared to traditional optocoupler devices. The ADUM1240ARZ is available in a 20-lead SSOP package, offering 3.75 kV reinforced isolation, and an 8-lead SOIC package with 3 kV basic isolation, making it suitable for a variety of applications requiring high isolation and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Quiescent Current per Channel (Refresh Enabled) | 3.1 | - | 5.6 | μA | VDDx = 3.3 V, ENx = 0 |
| Quiescent Current per Channel (Refresh Disabled) | 0.12 | - | 0.3 | μA | VDDx = 3.3 V, ENx = 1 |
| Dynamic Supply Current per Channel | 88 | - | - | μA/Mbps | VDDx = 3.3 V |
| Output Rise Time/Fall Time | - | 2 | 10 | ns | 10% to 90% |
| Common-Mode Transient Immunity | 25 | - | 40 | kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
| Refresh Rate | - | 14 | - | kbps | VDDx = VDD1 or VDD2 |
Key Features
- Ultralow power operation with quiescent currents as low as 0.3 μA per channel when refresh is disabled.
- High-speed data transfer with output rise and fall times of 2 ns to 10 ns.
- Input glitch filter to protect against extraneous noise disturbances.
- Low pulse width distortion of less than 8 ns.
- Operates with supplies as low as 2.25 V.
- Available in 20-lead SSOP and 8-lead SOIC packages, offering 3.75 kV and 3 kV isolation respectively.
Applications
- Industrial I/O and control systems.
- Automotive interfaces (CAN, Audio, Ethernet).
- RS-232 / RS-422 / RS-485 / RS-562 serial communication.
- IO-Link and other industrial communication protocols.
- Medical devices requiring high isolation and low power consumption.
- General-purpose digital isolation in various electronic systems.
Q & A
- What is the ADUM1240ARZ? The ADUM1240ARZ is a micropower, 2-channel digital isolator produced by Analog Devices Inc., utilizing iCoupler® technology.
- What are the package options for the ADUM1240ARZ? It is available in 20-lead SSOP and 8-lead SOIC packages.
- What is the isolation voltage rating for the ADUM1240ARZ? The 20-lead SSOP package offers 3.75 kV reinforced isolation, and the 8-lead SOIC package offers 3 kV basic isolation.
- What is the quiescent current per channel when refresh is enabled? The quiescent current per channel is less than 5.6 μA when refresh is enabled.
- What is the dynamic supply current per channel? The dynamic supply current per channel is typically 88 μA/Mbps.
- What is the output rise and fall time? The output rise and fall time is between 2 ns and 10 ns.
- Does the ADUM1240ARZ have any noise protection features? Yes, it includes an input glitch filter to protect against extraneous noise disturbances.
- What are some common applications of the ADUM1240ARZ? It is used in industrial I/O, automotive interfaces, serial communication, IO-Link, and medical devices.
- What is the minimum supply voltage for the ADUM1240ARZ? The minimum supply voltage is 2.25 V.
- Is the ADUM1240ARZ compliant with any regulatory standards? Yes, it meets regulatory requirements such as UL and CSA standards).
