ISL83491IBZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: The ISL83491IBZ-T is a high-speed, quad-channel digital isolator designed for use in industrial applications. It provides galvanic isolation between different circuits, protecting sensitive components from voltage spikes and noise.

Characteristics: - High-speed data transmission - Wide operating temperature range - Low power consumption - Robust isolation barrier - High noise immunity

Package: The ISL83491IBZ-T is available in a small outline package (SOIC) with 16 pins.

Essence: The essence of the ISL83491IBZ-T lies in its ability to provide reliable and secure communication between isolated circuits, ensuring data integrity and system safety.

Packaging/Quantity: The ISL83491IBZ-T is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Data Rate: Up to 40 Mbps
• Isolation Voltage: 2.5kV RMS
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay: 20 ns (max)
• Rise/Fall Time: 10 ns (typ)

Detailed Pin Configuration

The ISL83491IBZ-T has a total of 16 pins, divided into four channels with four pins each. The pin configuration is as follows:

Channel 1: 1. VDD1: Positive supply voltage for Channel 1 2. GND1: Ground reference for Channel 1 3. RX1: Receiver input for Channel 1 4. TX1: Transmitter output for Channel 1

Channel 2: 5. VDD2: Positive supply voltage for Channel 2 6. GND2: Ground reference for Channel 2 7. RX2: Receiver input for Channel 2 8. TX2: Transmitter output for Channel 2

Channel 3: 9. VDD3: Positive supply voltage for Channel 3 10. GND3: Ground reference for Channel 3 11. RX3: Receiver input for Channel 3 12. TX3: Transmitter output for Channel 3

Channel 4: 13. VDD4: Positive supply voltage for Channel 4 14. GND4: Ground reference for Channel 4 15. RX4: Receiver input for Channel 4 16. TX4: Transmitter output for Channel 4

Functional Features

• High-speed data transmission: The ISL83491IBZ-T supports data rates of up to 40 Mbps, enabling fast and efficient communication between isolated circuits.
• Robust isolation barrier: With an isolation voltage of 2.5kV RMS, the IC provides a strong barrier against voltage spikes and noise, ensuring reliable operation in harsh industrial environments.
• Low power consumption: The IC is designed to minimize power consumption, making it suitable for battery-powered applications or systems with strict power requirements.
• High noise immunity: The ISL83491IBZ-T has excellent noise immunity, allowing it to maintain signal integrity even in noisy environments.

Advantages and Disadvantages

Advantages: - Provides galvanic isolation, protecting sensitive components from voltage spikes and noise. - High-speed data transmission capability. - Wide operating temperature range allows for use in various industrial environments. - Low power consumption for energy-efficient applications. - Robust isolation barrier ensures system safety and reliability. - High noise immunity for reliable communication in noisy environments.

Disadvantages: - Limited number of channels (four channels) may not be sufficient for certain applications requiring more isolated circuits. - Relatively higher cost compared to non-isolated alternatives.

Working Principles

The ISL83491IBZ-T utilizes a combination of optocoupler and digital signal processing techniques to achieve galvanic isolation. Each channel consists of an input photodiode, a high-speed LED, and a CMOS output stage. When a signal is applied to the input side, the photodiode generates a corresponding current that activates the LED on the output side, transmitting the signal without any direct electrical connection.

Detailed Application Field Plans

The ISL83491IBZ-T is widely used in various industrial applications, including but not limited to: - Motor control systems - Power inverters - Industrial automation - Programmable logic controllers (PLCs) - Data acquisition systems - Communication interfaces

Detailed and Complete Alternative Models

1. ADuM1401: Quad-channel digital isolator with similar specifications and features.
2. ISO7741: High-speed quad-channel digital isolator with reinforced isolation.
3. MAX14850: Quad-channel digital isolator with integrated power isolation.

These alternative models offer similar functionality and can be considered as