Overview
The ADUM3481ARSZ-RL7 is a quad-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to optocouplers and other integrated couplers. The ADUM3481 is designed for high-speed data transfer with low propagation delay and high common-mode transient immunity, making it suitable for a variety of isolation applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Data Rate | - | - | 1 Mbps | - | Mbps | Within PWD limit |
| Propagation Delay | tPHL, tPLH | 25 ns | 33 ns | 50 ns | ns | 50% input to 50% output |
| Supply Voltage | VDDL1, VDD1, VDDL2, VDD2 | 4.5 V | 5 V | 5.5 V | V | -40°C ≤ TA ≤ +125°C |
| Quiescent Supply Current (Input Side) | IDDI (Q) | 0.50 mA | 0.60 mA | - | mA | - |
| Quiescent Supply Current (Output Side) | IDDO (Q) | 1.26 mA | 1.7 mA | - | mA | - |
| Dynamic Supply Current (Input Side) | IDDI (D) | - | 0.070 mA/Mbps | - | mA/Mbps | - |
| Common-Mode Transient Immunity | |CM| | 25 kV/µs | 35 kV/µs | - | kV/µs | Transient magnitude = 800 V |
| Output Rise/Fall Time | tR/tF | - | 2.5 ns | - | ns | 10% to 90% |
| Input-to-Output Resistance | RI-O | 10^12 Ω | - | - | Ω | - |
| Input-to-Output Capacitance | CI-O | - | 2.2 pF | - | pF | f = 1 MHz |
| Package Type | - | - | 20-SSOP (0.209, 5.30mm Width) | - | - | - |
| Pin Count | - | - | 20 | - | - | - |
| Voltage Isolation | - | - | 3750 Vrms | - | Vrms | - |
Key Features
- High-speed data rate up to 1 Mbps (NRZ).
- Low propagation delay of 25 ns typical.
- Low dynamic power consumption.
- 1.8 V to 5 V level translation.
- High temperature operation up to 125°C.
- High common-mode transient immunity (>25 kV/µs).
- Output default select and refresh period for reliable operation.
- RoHS-compliant and available in 20-lead SSOP package.
- Safety and regulatory approvals including UL recognition, CSA Component Acceptance Notice #5A, and VDE certificate of conformity.
Applications
- General-purpose multichannel isolation.
- SPI interface and data converter isolation.
- Industrial field bus isolation.
- Other applications requiring high-speed digital isolation with low propagation delay and high common-mode transient immunity.
Q & A
- What is the ADUM3481ARSZ-RL7 used for? The ADUM3481ARSZ-RL7 is a quad-channel digital isolator used for high-speed data transfer and isolation in various applications, including general-purpose multichannel isolation, SPI interface/data converter isolation, and industrial field bus isolation.
- What is the maximum data rate of the ADUM3481ARSZ-RL7? The maximum data rate of the ADUM3481ARSZ-RL7 is 1 Mbps.
- What is the typical propagation delay of the ADUM3481ARSZ-RL7? The typical propagation delay is 25 ns.
- What is the voltage isolation rating of the ADUM3481ARSZ-RL7? The voltage isolation rating is 3750 Vrms.
- What are the operating temperature ranges for the ADUM3481ARSZ-RL7? The operating temperature range is from -40°C to +125°C.
- What is the common-mode transient immunity of the ADUM3481ARSZ-RL7? The common-mode transient immunity is greater than 25 kV/µs.
- What package type is the ADUM3481ARSZ-RL7 available in? The ADUM3481ARSZ-RL7 is available in a 20-lead SSOP package.
- Is the ADUM3481ARSZ-RL7 RoHS-compliant? Yes, the ADUM3481ARSZ-RL7 is RoHS-compliant.
- What safety and regulatory approvals does the ADUM3481ARSZ-RL7 have? It has UL recognition, CSA Component Acceptance Notice #5A, and VDE certificate of conformity.
- What is the typical quiescent supply current for the input side of the ADUM3481ARSZ-RL7? The typical quiescent supply current for the input side is 0.60 mA.
