Overview
The ADUM1241ARSZ-RL7 is a micropower, dual-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technologies to provide superior performance characteristics compared to traditional optocoupler devices. It is designed for low-power, high-speed applications and offers bidirectional communication capabilities.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Quiescent Current per Channel (ENx low) | 0.12 | 4.8 | 10 | μA | ENx low, VDDx = 3.3 V or 2.5 V |
| Dynamic Current per Channel | 88 | - | - | μA/Mbps | VDDx = 3.3 V or 2.5 V |
| Output Rise/Fall Time | 2 | - | 10 | ns | 10% to 90% |
| Common-Mode Transient Immunity | 25 | - | 40 | kV/μs | VCM = 1000 V, transient magnitude = 800 V |
| Refresh Rate | 14 | - | - | kbps | VDDx = VDD1 or VDD2 |
| Input Threshold Logic High | 0.7 VDDx | - | - | V | - |
| Input Threshold Logic Low | 0.3 VDDx | - | - | V | - |
| Output Voltage Logic High | VDDx - 0.1 | - | 3.3 | V | IOUTx = -20 μA, VIx = VIxH |
| Output Voltage Logic Low | 0.0 | - | 0.1 | V | IOUTx = 20 μA, VIx = VIxL |
| Isolation Voltage | - | - | 3750 V rms (20-lead SSOP), 3000 V rms (8-lead SOIC) | V rms | For 1 minute per UL 1577 |
Key Features
- Micropower consumption: 0.1 μA per channel quiescent current with refresh disabled.
- High-speed data transfer: Up to 2 Mbps nonreturn to zero (NRZ) data rate.
- Bidirectional communication: Supports bidirectional data transfer.
- High temperature operation: Functional up to 125°C.
- High common-mode transient immunity: >25 kV/μs.
- Compact packaging: Available in 20-lead SSOP and 8-lead SOIC packages.
- Safety and regulatory approvals: UL 1577, CSA, VDE certifications.
Applications
- General-purpose, low-power, multichannel isolation.
- 1 MHz low-power serial peripheral interface (SPI).
- 4 mA to 20 mA loop process control.
- Industrial control systems.
- Medical devices requiring isolation.
- Automotive systems.
Q & A
- What is the ADUM1241ARSZ-RL7 used for?
The ADUM1241ARSZ-RL7 is used for low-power, high-speed digital isolation in various applications, including industrial control systems, medical devices, and automotive systems. - What is the maximum data transfer rate of the ADUM1241ARSZ-RL7?
The maximum data transfer rate is up to 2 Mbps nonreturn to zero (NRZ). - What are the available package options for the ADUM1241ARSZ-RL7?
The component is available in 20-lead SSOP and 8-lead SOIC packages. - What is the quiescent current per channel when the internal refresh is disabled?
The quiescent current per channel is less than 0.12 μA when the internal refresh is disabled. - What is the common-mode transient immunity of the ADUM1241ARSZ-RL7?
The common-mode transient immunity is greater than 25 kV/μs. - What are the safety and regulatory approvals for the ADUM1241ARSZ-RL7?
The component has approvals from UL 1577, CSA, and VDE. - What is the maximum operating temperature of the ADUM1241ARSZ-RL7?
The maximum operating temperature is 125°C. - Is the ADUM1241ARSZ-RL7 suitable for bidirectional communication?
Yes, it supports bidirectional communication. - What is the isolation voltage rating for the 20-lead SSOP package?
The isolation voltage rating for the 20-lead SSOP package is 3750 V rms for 1 minute per UL 1577. - What is the refresh rate of the ADUM1241ARSZ-RL7?
The refresh rate is 14 kbps.
