Overview
The ISO7731DBQ, manufactured by Texas Instruments, is a high-performance triple-channel digital isolator designed for applications requiring robust isolation and low power consumption. This device is part of the ISO773x series and is housed in a DBQ (SSOP-16) package. It provides enhanced insulation ratings compliant with VDE, CSA, TUV, and CQC standards, making it suitable for a wide range of industrial and automotive applications. The ISO7731DBQ is particularly valued for its high electromagnetic immunity, low emissions, and efficient power usage, making it an ideal choice for isolating CMOS or LVCMOS digital I/O in noisy environments.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Isolation Voltage | 3000 | V RMS | DBQ package |
| Channels | 3 | - | Two forward, one reverse |
| Data Rate | 100 | Mbps | - |
| Supply Voltage | 2.25 to 5.5 | V | - |
| Propagation Delay | 16 | ns | Max |
| Operating Temperature | -55 to +125 | °C | - |
| Package | SSOP-16 | - | DBQ |
Key Features
- High electromagnetic immunity and low emissions for reliable operation in noisy environments.
- Low power consumption, ideal for energy-sensitive applications.
- Enhanced insulation ratings compliant with VDE, CSA, TUV, and CQC standards.
- Enable pin for placing outputs in high-impedance state, suitable for multi-master applications.
- Dual capacitive SiO2 insulation barriers for robust isolation.
Applications
The ISO7731DBQ is widely used in industrial automation, automotive electronics, and network communication systems. Its robust isolation and low power consumption make it ideal for isolating digital I/O in motor control, power inverters, and PLCs. In automotive applications, it ensures reliable communication in electric vehicles and battery management systems. Additionally, it is used in medical devices and renewable energy systems where high isolation and low emissions are critical.
Q & A
1. What is the isolation voltage of the ISO7731DBQ?
The ISO7731DBQ provides an isolation voltage of 3000 V RMS in the DBQ package.
2. How many channels does the ISO7731DBQ have?
It has three channels: two forward and one reverse.
3. What is the maximum data rate supported by the ISO7731DBQ?
The maximum data rate is 100 Mbps.
4. What is the operating voltage range of the ISO7731DBQ?
The operating voltage range is 2.25 V to 5.5 V.
5. What is the propagation delay of the ISO7731DBQ?
The maximum propagation delay is 16 ns.
6. What is the operating temperature range of the ISO7731DBQ?
It operates from -55°C to +125°C.
7. What package is the ISO7731DBQ available in?
It is available in the SSOP-16 (DBQ) package.
8. What standards does the ISO7731DBQ comply with?
It complies with VDE, CSA, TUV, and CQC standards.
9. What is the purpose of the enable pin on the ISO7731DBQ?
The enable pin allows outputs to be placed in a high-impedance state, reducing power consumption in multi-master applications.
10. What are the typical applications of the ISO7731DBQ?
It is used in industrial automation, automotive electronics, motor control, power inverters, PLCs, and medical devices.
