Overview
The ISO7731BDWR is a high-performance, triple-channel digital isolator manufactured by Texas Instruments. This component is designed to provide robust signal isolation in various electronic applications, including industrial automation, medical equipment, and power supplies. It features state-of-the-art capacitive isolation technology, ensuring high isolation voltage and protection against high voltage spikes, noise, and other disturbances. The device operates over a wide temperature range of -55°C to 125°C and offers a data rate of up to 100 Mbps, making it suitable for fast and accurate data transfer without compromising signal quality.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC1, VCC2) | -0.5 to 6 | V |
| Input/Output Voltage | -0.5 to VCCX + 0.5 | V |
| Output Current | -15 to 15 | mA |
| Junction Temperature | -150 to 150 | °C |
| Storage Temperature | -65 to 150 | °C |
| Data Rate | Up to 100 | Mbps |
| Isolation Voltage (VIORM) | Up to 5000 | VRMS |
| Transient Isolation Voltage (VIOTM) | Up to 8000 | VPK |
| Surge Isolation Voltage (VIOSM) | Up to 12800 | VPK |
| ESD Protection (Human Body Model) | ±6000 | V |
| Package Type | 16-pin SOIC wide-body (DW) |
Key Features
- High-performance, triple-channel digital isolator with two forward and one reverse-direction channel.
- Robust isolation barrier with >30-year projected lifetime at 1500 VRMS working voltage.
- Up to 5000 VRMS isolation rating and up to 12.8 kV surge capability.
- Wide supply voltage range: 2.25 V to 5.5 V.
- Low power consumption, typical 1.5 mA per channel at 1 Mbps.
- Low propagation delay: 11 ns typical (5 V supplies).
- Robust electromagnetic compatibility (EMC) and system-level ESD, EFT, and surge immunity.
- ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier.
- Compliant with key industry safety standards including UL 1577, IEC 60950-1, IEC 61010-1, and VDE V 0884-11.
Applications
The ISO7731BDWR is suitable for a variety of applications that require reliable signal isolation, including:
- Industrial automation and control systems.
- Medical equipment and devices.
- Power supplies and isolated power systems.
- Advanced communication interfaces such as RS-485, RS-232, and CAN buses.
- Safety-critical applications where high isolation and protection against voltage spikes and noise are essential.
Q & A
- What is the primary function of the ISO7731BDWR?
The ISO7731BDWR is a digital isolator designed to provide robust signal isolation and protection against high voltage spikes, noise, and other disturbances in electronic circuits. - What is the data rate of the ISO7731BDWR?
The ISO7731BDWR supports a data rate of up to 100 Mbps. - What is the isolation voltage rating of the ISO7731BDWR?
The ISO7731BDWR has an isolation voltage rating of up to 5000 VRMS. - What are the operating temperature ranges for the ISO7731BDWR?
The device operates over a wide temperature range of -55°C to 125°C. - What types of packages are available for the ISO7731BDWR?
The ISO7731BDWR is available in 16-pin SOIC wide-body (DW) and QSOP (DBQ-16) packages. - Does the ISO7731BDWR have any safety certifications?
Yes, it is compliant with key industry safety standards including UL 1577, IEC 60950-1, IEC 61010-1, and VDE V 0884-11. - What is the typical power consumption of the ISO7731BDWR per channel?
The typical power consumption is 1.5 mA per channel at 1 Mbps. - How does the ISO7731BDWR protect against ESD?
The device offers ±6000 V ESD protection according to the Human Body Model and ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier. - Can the ISO7731BDWR be used in automotive applications?
Yes, an automotive version (ISO773x-Q1) is available. - What is the propagation delay of the ISO7731BDWR?
The propagation delay is typically 11 ns at 5 V supplies.
