Overview
The ADUM1440ARSZ is a micropower, 4-channel digital isolator produced by Analog Devices Inc. It is based on the iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technologies. This device is designed to provide high isolation voltages and low power consumption, making it suitable for a variety of applications where signal isolation is critical.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Voltage - Isolation | 3750 | Vrms | |||
| Number of Channels | 4 | ||||
| Data Rate | 2 | Mbps | |||
| Propagation Delay tpLH / tpHL | 180ns, 180ns | ||||
| Pulse Width Distortion | 8ns | ||||
| Rise / Fall Time | 2ns, 2ns | ||||
| Voltage - Supply | 2.25V | 3.6V | |||
| Operating Temperature | -40°C | 125°C | |||
| Common Mode Transient Immunity (Min) | 25 | kV/µs | |||
| Package / Case | 20-SSOP (0.209", 5.30mm Width) | ||||
| Mounting Type | Surface Mount |
Key Features
- High Isolation Voltage: The ADUM1440ARSZ provides an isolation voltage of up to 3750 Vrms, ensuring robust signal isolation.
- Low Power Consumption: The device operates with very low quiescent current, typically less than 10 µA per channel when the internal refresh is enabled, and less than 1 µA when disabled.
- High Speed Operation: Supports data rates up to 2 Mbps with propagation delays of 180 ns and rise/fall times of 2 ns.
- Common Mode Transient Immunity: Offers high common mode transient immunity of at least 25 kV/µs.
- Compact Packaging: Available in a 20-lead SSOP package, saving significant board space compared to wider body SOIC packages.
- Wide Supply Voltage Range: Operates with supply voltages from 2.25 V to 3.6 V.
- Input Glitch Filter: Includes an input glitch filter to protect against extraneous noise disturbances.
Applications
The ADUM1440ARSZ is suitable for various applications requiring high signal isolation and low power consumption, such as:
- Industrial control systems
- Medical devices
- Automotive systems
- Power supplies and DC-DC converters
- Communication systems
Q & A
- What is the isolation voltage of the ADUM1440ARSZ?
The ADUM1440ARSZ provides an isolation voltage of up to 3750 Vrms. - What is the data rate supported by the ADUM1440ARSZ?
The device supports data rates up to 2 Mbps. - What is the typical quiescent current per channel for the ADUM1440ARSZ?
The typical quiescent current per channel is less than 10 µA when the internal refresh is enabled and less than 1 µA when disabled. - What is the common mode transient immunity of the ADUM1440ARSZ?
The device offers a common mode transient immunity of at least 25 kV/µs. - What is the operating temperature range of the ADUM1440ARSZ?
The operating temperature range is from -40°C to 125°C. - What package types are available for the ADUM1440ARSZ?
The device is available in a 20-lead SSOP package. - Does the ADUM1440ARSZ have an input glitch filter?
Yes, the device includes an input glitch filter to protect against extraneous noise disturbances. - What is the rise/fall time of the ADUM1440ARSZ?
The rise/fall time is typically 2 ns. - Is the ADUM1440ARSZ RoHS compliant?
Yes, the ADUM1440ARSZ is RoHS compliant. - What is the propagation delay of the ADUM1440ARSZ?
The propagation delay is up to 180 ns.
