Overview
The ADUM1440ARQZ-RL7, produced by Analog Devices Inc., is a micropower, 4-channel digital isolator based on the iCoupler technology. This component combines high-speed CMOS and monolithic air core transformer technologies to provide superior performance characteristics compared to traditional optocoupler devices. It is designed to operate with low power consumption, making it suitable for a wide range of applications requiring high isolation and low power usage.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Input Threshold Logic High | VIH | 0.7 VDDx | 1 VDDx | V | ||
| Input Threshold Logic Low | VIL | 0.3 VDDx | 1 VDDx | V | ||
| Output Voltages Logic High | VOH | VDDx - 0.1 | 3.3 V | V | IOUTx = -20 µA, VIx = VIxH | |
| Output Voltages Logic Low | VOL | 0.0 | 0.1 V | V | IOUTx = 20 µA, VIx = VIxL | |
| Input Current per Channel | II | -1 | 0.01 | 1 µA | µA | 0 V ≤ VIx ≤ VDDx1 |
| Supply Current per Channel (Quiescent) | IDDI (Q) | 2.6 | 3.3 | µA | ENX low | |
| Supply Current per Channel (Dynamic) | IDDI (D) | 76 | µA/Mbps | |||
| Output Rise Time/Fall Time | tR/tF | 2 | 10 ns | ns | 10% to 90% | |
| Common-Mode Transient Immunity | |CM| | 25 | 40 kV/µs | kV/µs | VIx = VDDx1, VCM = 1000 V, transient magnitude = 800 V | |
| Isolation Voltage | 2500 Vrms | Vrms |
Key Features
- High Isolation Voltage: The ADUM1440ARQZ-RL7 provides 2500 Vrms of isolation voltage, ensuring high safety and reliability in applications requiring electrical isolation.
- Low Power Consumption: The device operates with very low quiescent current (as low as 0.05 µA per channel when refresh is disabled), making it suitable for power-sensitive applications.
- High Speed Operation: The isolator supports data rates with low pulse width distortion (<8 ns) and fast output rise and fall times (2 ns to 10 ns).
- Input Glitch Filter: Built-in input glitch filters protect against extraneous noise disturbances, enhancing the reliability of the signal transmission.
- Compact Packaging: Available in 16-lead QSOP and 20-lead SSOP packages, these isolators save significant board space compared to traditional wide body SOIC packages.
- Regulatory Compliance: Meets regulatory requirements such as UL and CSA standards, ensuring compliance in various industrial and medical applications.
Applications
- Industrial I/O: Suitable for industrial control systems, sensors, and actuators where high isolation and low power consumption are critical.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces where isolation is necessary for safety and reliability.
- Medical Devices: Applicable in medical devices requiring high isolation to ensure patient safety and compliance with medical standards.
- RS-232 / RS-422 / RS-485 Interfaces: Used in serial communication interfaces where electrical isolation is necessary to prevent data corruption and ensure system reliability).
- Powerline Communications: Suitable for powerline communication systems where high isolation is required to ensure safe and reliable data transmission).
Q & A
- What is the isolation voltage of the ADUM1440ARQZ-RL7?
The ADUM1440ARQZ-RL7 provides 2500 Vrms of isolation voltage.
- What are the typical quiescent current values for the ADUM1440ARQZ-RL7?
The quiescent current is typically 2.6 µA to 3.3 µA per channel when the internal refresh is enabled, and as low as 0.05 µA per channel when the internal refresh is disabled).
- What is the data rate capability of the ADUM1440ARQZ-RL7?
The device supports data rates with low pulse width distortion (<8 ns) and has fast output rise and fall times (2 ns to 10 ns)).
- Does the ADUM1440ARQZ-RL7 have built-in noise protection?
Yes, the ADUM1440ARQZ-RL7 includes input glitch filters to protect against extraneous noise disturbances).
- What are the package options for the ADUM1440ARQZ-RL7?
The device is available in 16-lead QSOP and 20-lead SSOP packages).
- Does the ADUM1440ARQZ-RL7 meet any regulatory standards?
Yes, it meets regulatory requirements such as UL and CSA standards).
- What is the typical supply voltage range for the ADUM1440ARQZ-RL7?
The device can operate with supply voltages as low as 2.25 V).
- How does the ADUM1440ARQZ-RL7 save board space?
The compact QSOP and SSOP packages save almost 70% of board space compared to traditional wide body SOIC packages).
- What are some common applications for the ADUM1440ARQZ-RL7?
Common applications include industrial I/O, automotive interfaces, medical devices, RS-232 / RS-422 / RS-485 interfaces, and powerline communications).
- What technology does the ADUM1440ARQZ-RL7 use for isolation?
The ADUM1440ARQZ-RL7 uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformer technologies).
