ADM1490EBRZ

Product Overview

• Category: Integrated Circuit
• Use: Signal Isolation and Level Shifting
• Characteristics: High-speed, Low-power, Robust Design
• Package: 16-Lead SOIC (Small Outline Integrated Circuit)
• Essence: Isolates and shifts signal levels between different parts of a circuit
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• Isolation Voltage: 2.5kV
• Data Rate: Up to 25 Mbps
• Propagation Delay: 20 ns
• Input Current: 1.6 mA (max)
• Output Current: 8 mA (max)

Detailed Pin Configuration

The ADM1490EBRZ has a total of 16 pins arranged as follows:

1. VCC1: Supply voltage for side 1 of the isolation barrier.
2. GND1: Ground reference for side 1.
3. RO1: Receiver output for side 1.
4. RE1: Receiver enable for side 1.
5. DE1: Driver enable for side 1.
6. DI1: Driver input for side 1.
7. VCC2: Supply voltage for side 2 of the isolation barrier.
8. GND2: Ground reference for side 2.
9. RO2: Receiver output for side 2.
10. RE2: Receiver enable for side 2.
11. DE2: Driver enable for side 2.
12. DI2: Driver input for side 2.
13. NC: No connection.
14. NC: No connection.
15. NC: No connection.
16. NC: No connection.

Functional Features

• Provides galvanic isolation between two parts of a circuit.
• Transfers digital signals between isolated sections.
• Shifts signal levels to match the requirements of different circuit sections.
• Supports high-speed data transmission up to 25 Mbps.
• Low power consumption for energy-efficient operation.
• Robust design ensures reliable performance in harsh environments.

Advantages and Disadvantages

Advantages

• Enables safe communication between isolated circuit sections.
• Protects sensitive components from voltage spikes and noise.
• Allows interfacing between circuits with different voltage levels.
• High-speed data transfer capability.
• Compact package size for space-constrained applications.

Disadvantages

• Limited number of pins for I/O connections.
• Requires careful consideration of power supply and ground connections.
• May introduce slight signal distortion due to isolation barrier.

Working Principles

The ADM1490EBRZ utilizes transformer-based isolation technology to provide galvanic isolation between two sections of a circuit. It employs differential signaling to transmit digital signals, ensuring high noise immunity and robustness. The driver section converts the input signal into a differential output, which is then transmitted through the isolation barrier. On the receiving side, the signal is recovered and converted back to a single-ended format. The device also incorporates level shifting circuitry to match the voltage requirements of the connected circuit sections.

Detailed Application Field Plans

The ADM1490EBRZ finds applications in various fields where signal isolation and level shifting are required. Some potential application areas include:

1. Industrial Automation: Isolating control signals between PLCs (Programmable Logic Controllers) and sensors/actuators.
2. Power Electronics: Isolating gate drive signals in motor drives, inverters, and power supplies.
3. Telecommunications: Signal isolation in telecom equipment, such as base stations and network switches.
4. Medical Devices: Isolating signals in patient monitoring systems and medical imaging equipment.
5. Automotive Electronics: Signal isolation in automotive control modules, battery management systems, and electric vehicle charging stations.

Detailed and Complete Alternative Models

1. ADuM1400BRWZ: 4-channel digital isolator with similar specifications and pin configuration.
2. ISO1540DW: 2-channel digital isolator with higher data rate capability.
3. MAX14850: 8-channel digital isolator with integrated power supply.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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