Overview
The ADUM1442ARQZ-RL7 is a 4-channel digital isolator produced by Analog Devices Inc., utilizing the company's iCoupler technology. This micropower isolator is designed to provide high isolation and low power consumption, making it suitable for a variety of applications requiring reliable and efficient signal isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Input Threshold Logic High | VIH | 0.7 VDDx1 | V | |||
| Input Threshold Logic Low | VIL | 0.3 VDDx1 | V | |||
| Output Voltages Logic High | VOH | VDDx1 - 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 |
| Input Switching Thresholds Positive Threshold Voltage | VT+ | 1.5 V | V | |||
| Input Switching Thresholds Negative Going Threshold | VT- | 1.0 V | V | |||
| Input Hysteresis | ΔVT | 0.5 V | V | |||
| Undervoltage Lockout, VDD1 or VDD2 | UVLO | 1.5 V | V | |||
| Supply Current per Channel Quiescent Current Input Supply | IDDI (Q) | 2.6 | 3.3 | µA | ENX low | |
| Supply Current per Channel Quiescent Current Output Supply | IDDO (Q) | 0.5 | 1.8 | µA | ENX low | |
| Data Rate | 2 Mbps | Mbps | Within PWD limit | |||
| Propagation Delay | tPHL, tPLH | 112 | 180 | ns | 50% input to 50% output | |
| Pulse-Width Distortion | PWD | 12 ns | ns | |tPLH - tPHL| | ||
| Minimum Pulse Width | PW | 500 ns | ns | Within PWD limit |
Key Features
- High Isolation: The ADUM1442ARQZ-RL7 provides high isolation of up to 5 kV rms, ensuring reliable signal transfer between isolated domains.
- Low Power Consumption: This micropower isolator has a quiescent current as low as 2.6 µA per channel, making it energy-efficient.
- High Data Rate: Supports data rates up to 2 Mbps, suitable for various high-speed applications.
- Small Form Factor: Available in a 16-lead QSOP package, making it ideal for space-constrained designs.
- Wide Operating Temperature Range: Operates over a temperature range of -40°C to +125°C, making it suitable for harsh environments.
- Undervoltage Lockout (UVLO): Ensures that the device operates correctly only when the supply voltage is within the specified range.
Applications
- Industrial I/O and Control Systems: Ideal for isolating signals in industrial control systems, ensuring safety and reliability.
- Medical Devices: Used in medical devices where high isolation is critical for patient safety.
- Automotive Systems: Suitable for automotive applications requiring high isolation and low power consumption.
- Power Supplies and DC-DC Converters: Used to isolate feedback signals in power supplies and DC-DC converters.
- Test and Measurement Equipment: Utilized in test and measurement equipment to isolate signals and ensure accurate readings.
Q & A
- What is the ADUM1442ARQZ-RL7 used for?
The ADUM1442ARQZ-RL7 is a 4-channel digital isolator used to isolate digital signals between two isolated domains, ensuring high isolation and low power consumption. - What is the maximum data rate supported by the ADUM1442ARQZ-RL7?
The ADUM1442ARQZ-RL7 supports data rates up to 2 Mbps. - What is the operating temperature range of the ADUM1442ARQZ-RL7?
The device operates over a temperature range of -40°C to +125°C. - What is the typical quiescent current of the ADUM1442ARQZ-RL7?
The typical quiescent current is 3.3 µA per channel. - What is the isolation voltage of the ADUM1442ARQZ-RL7?
The device provides an isolation voltage of up to 5 kV rms. - In what package is the ADUM1442ARQZ-RL7 available?
The device is available in a 16-lead QSOP package. - What is the minimum pulse width supported by the ADUM1442ARQZ-RL7?
The minimum pulse width is 500 ns. - Does the ADUM1442ARQZ-RL7 have undervoltage lockout (UVLO) protection?
Yes, the device has UVLO protection with a threshold of 1.5 V. - What are some common applications of the ADUM1442ARQZ-RL7?
Common applications include industrial I/O and control systems, medical devices, automotive systems, power supplies, and test and measurement equipment. - How does the ADUM1442ARQZ-RL7 ensure signal integrity?
The device ensures signal integrity through high isolation, low power consumption, and robust switching specifications.
