Overview
The ADUM1246ARSZ from Analog Devices Inc. is a micropower, 2-channel digital isolator that utilizes the company's iCoupler technology. This device combines high-speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies to provide superior performance characteristics compared to traditional optocoupler devices. It is designed for general-purpose, low-power, multichannel isolation and is particularly suitable for applications requiring high common-mode transient immunity and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD1, VDD2) | 3.0 | 3.3 | 3.6 | V | |
| Quiescent Current per Channel (Refresh Enabled) | 4.8 | 10 | 16 | μA | ENX low, 3.3 V operation |
| Quiescent Current per Channel (Refresh Disabled) | 0.12 | 0.3 | 1 | μA | ENX high, 3.3 V operation |
| Dynamic Current per Channel | 88 | 116 | 148 | μA/Mbps | 3.3 V operation |
| Data Rate | 2 | Mbps | Nonreturn to zero (NRZ) | ||
| Propagation Delay | 10 | ns | 10% to 90% | ||
| Common-Mode Transient Immunity | 25 | 40 | kV/μs | ||
| Operating Temperature | -40 | 125 | °C | ||
| Insulation Voltage (VIORM) | 849 | V peak | 20-lead SSOP package |
Key Features
- Ultralow power operation with quiescent currents as low as 0.3 μA per channel when refresh is disabled.
- High-speed data transfer up to 2 Mbps with nonreturn to zero (NRZ) encoding.
- High common-mode transient immunity of >25 kV/μs.
- Small package options including 20-lead SSOP and 8-lead SOIC.
- Bidirectional communication capability.
- High temperature operation up to 125°C.
- Safety and regulatory approvals including UL 1577, CSA, and 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 I/O and control systems.
- Automotive and medical devices requiring high isolation and low power consumption.
Q & A
- What is the ADUM1246ARSZ used for?
The ADUM1246ARSZ is used for general-purpose, low-power, multichannel isolation in various applications, including industrial I/O, SPI interfaces, and process control. - What is the maximum data rate of the ADUM1246ARSZ?
The maximum data rate is up to 2 Mbps with nonreturn to zero (NRZ) encoding. - What are the package options for the ADUM1246ARSZ?
The device is available in 20-lead SSOP and 8-lead SOIC packages. - What is the common-mode transient immunity of the ADUM1246ARSZ?
The common-mode transient immunity is >25 kV/μs. - What are the safety and regulatory approvals for the ADUM1246ARSZ?
The device has approvals including UL 1577, CSA, and VDE certifications. - What is the operating temperature range of the ADUM1246ARSZ?
The operating temperature range is from -40°C to 125°C. - How does the ADUM1246ARSZ manage power consumption?
The device features ultralow power operation with quiescent currents as low as 0.3 μA per channel when refresh is disabled. - Is the ADUM1246ARSZ suitable for high-speed applications?
Yes, it supports high-speed data transfer up to 2 Mbps. - Can the ADUM1246ARSZ be used in bidirectional communication?
Yes, the device supports bidirectional communication. - What is the insulation voltage rating for the ADUM1246ARSZ in the 20-lead SSOP package?
The insulation voltage rating is up to 849 V peak.
