Overview
The ISO7240ADWR is a quad-channel digital isolator produced by Texas Instruments. This component is designed to provide high isolation and reliable performance in various applications, particularly in environments where electrical noise and high voltages are present. The ISO7240ADWR features Texas Instruments' silicon dioxide (SiO2) isolation barrier, which effectively blocks high voltage, isolates grounds, and prevents noise currents from interfering with sensitive circuitry. This device is part of the ISO7240 family, known for its robust and reliable operation in critical systems such as fire detection and alarm systems, industrial control systems, and medical devices.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | ISO7240ADWR |
| Description | Digital Isolator, 4 Channel, 1 Mbps, 4000 Vpk |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Number of Channels | 4 |
| Channel Type | Unidirectional |
| Voltage - Isolation | 4000 Vpk |
| Common Mode Transient Immunity (Min) | 25 kV/µs |
| Data Rate | 1 Mbps |
| Propagation Delay tpLH / tpHL (Max) | 95 ns, 95 ns |
| Pulse Width Distortion (Max) | 10 ns |
| Rise / Fall Time (Typ) | 2 ns, 2 ns |
| Voltage - Supply | 3.15 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Maximum Operating Temperature | 125°C |
| Minimum Operating Temperature | -40°C |
Key Features
- High Isolation: 4000 Vpk isolation voltage and 25 kV/µs common mode transient immunity ensure robust performance in noisy environments.
- Multiple Supply Options: Can be powered from 3.3V or 5V supplies on either side in any combination, with 5V tolerant input pins.
- Low Propagation Delay and Skew: Maximum propagation delay of 95 ns and low channel-to-channel output skew of 1 ns.
- High Electromagnetic Immunity: Designed to operate in environments with high electromagnetic interference.
- Safety Certifications: Compliant with DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1 certifications.
- Fail-Safe Operation: Features a failsafe circuit that drives the output to a logic high state if the input is unpowered or not actively driven.
- Noise Filtering: Includes a noise-filter at the input to prevent transient pulses from being passed to the output.
Applications
- Fire Detection and Alarm Systems: Ideal for use in fire detection systems due to its high isolation and reliability.
- Industrial Control Systems: Suitable for industrial environments where electrical noise and high voltages are common.
- Medical Devices: Used in medical equipment to ensure safe and reliable operation in critical applications.
- Automotive Systems: Meets automotive temperature grades and is suitable for use in various automotive applications.
- Power Supplies and DC-DC Converters: Helps in isolating grounds and preventing noise currents in power supply systems.
Q & A
- What is the primary function of the ISO7240ADWR?
The ISO7240ADWR is a quad-channel digital isolator designed to provide high isolation and reliable performance by blocking high voltage, isolating grounds, and preventing noise currents.
- What are the operating temperature ranges for the ISO7240ADWR?
The operating temperature range is from -40°C to 125°C.
- What are the supply voltage options for the ISO7240ADWR?
The device can be powered from 3.3V or 5V supplies on either side in any combination.
- What is the isolation voltage of the ISO7240ADWR?
The isolation voltage is 4000 Vpk.
- Does the ISO7240ADWR have any safety certifications?
Yes, it is compliant with DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1 certifications.
- What is the data rate of the ISO7240ADWR?
The data rate is 1 Mbps.
- How many channels does the ISO7240ADWR have?
The device has four unidirectional channels.
- What is the common mode transient immunity of the ISO7240ADWR?
The common mode transient immunity is 25 kV/µs.
- Does the ISO7240ADWR have a failsafe feature?
Yes, it features a failsafe circuit that drives the output to a logic high state if the input is unpowered or not actively driven.
- What is the package type of the ISO7240ADWR?
The package type is 16-SOIC (0.295", 7.50mm Width).
