Overview
The ISO7761DW is a high-performance, six-channel digital isolator produced by Texas Instruments. This device is designed to provide robust isolation between CMOS or LVCMOS digital I/Os, ensuring reliable signal transmission and protection against noise and transient voltages. The ISO7761DW operates within a wide voltage range of 2.25 V to 5.5 V, making it versatile for various system designs and power sources. It is available in a 16-pin SOIC (DW) package and offers advanced features such as high-speed data transfer, precision timing control, and enhanced electromagnetic compatibility (EMC).
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC (DW)-16 |
| Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Data Rate | 100 Mbps |
| Isolation Rating (VRMS) | Up to 5000 VRMS (DW package) |
| Surge Capability | Up to 12.8 kV |
| Common Mode Transient Immunity (CMTI) | ±100 kV/µs Typical |
| Supply Voltage Range | 2.25 V to 5.5 V |
| Default Output | High (ISO776x) and Low (ISO776xF) Options |
| Power Consumption per Channel at 1 Mbps | Typical 1.4 mA |
| Propagation Delay at 5 V | Typical 11 ns |
| ESD Protection | ±8 kV IEC 61000-4-2 Contact discharge protection |
Key Features
- High-Speed Data Transfer: Supports data rates up to 100 Mbps.
- Robust Isolation Barrier: Offers up to 5000 VRMS isolation rating and up to 12.8 kV surge capability.
- Precision Timing Control: Ensures accurate synchronization between input and output signals.
- Wide Supply Range: Operates from 2.25 V to 5.5 V, providing flexibility in system design.
- Low Power Consumption: Typical 1.4 mA per channel at 1 Mbps.
- Low Propagation Delay: Typical 11 ns at 5 V.
- Robust EMC: System-level ESD, EFT, and surge immunity, with low emissions.
- Advanced Error Detection: Ensures reliable signal transmission by detecting and correcting errors.
- Real-time Monitoring Support: Facilitates continuous monitoring of system performance.
- Safety Certifications: Certified according to VDE, CSA, TUV, CQC, and UL 1577).
Applications
The ISO7761DW is suitable for various applications where robust digital signal isolation is critical. These include:
- Industrial Automation: Isolation of control signals and data buses in industrial control systems.
- Power Systems: Protection of power supply and control circuits from noise and transient voltages).
- Medical Equipment: Isolation of medical device interfaces to ensure patient safety and compliance with medical standards).
- Data Communication: Isolation of data buses such as RS-485, RS-232, and CAN to prevent noise interference).
Q & A
- What is the maximum data rate supported by the ISO7761DW?
The ISO7761DW supports data rates up to 100 Mbps.
- What is the isolation rating of the ISO7761DW?
The ISO7761DW has an isolation rating of up to 5000 VRMS (DW package).
- What is the operating temperature range of the ISO7761DW?
The operating temperature range is -55°C to 125°C).
- What are the default output states of the ISO7761DW?
The default output is high for devices without suffix F and low for devices with suffix F).
- Does the ISO7761DW have any safety certifications?
Yes, it is certified according to VDE, CSA, TUV, CQC, and UL 1577).
- What are the typical power consumption and propagation delay of the ISO7761DW?
The typical power consumption is 1.4 mA per channel at 1 Mbps, and the typical propagation delay is 11 ns at 5 V).
- What kind of ESD protection does the ISO7761DW offer?
The ISO7761DW offers ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier).
- In which package types is the ISO7761DW available?
The ISO7761DW is available in 16-pin SOIC (DW) and SSOP (DBQ) packages).
- What are some common applications of the ISO7761DW?
Common applications include industrial automation, power systems, medical equipment, and data communication).
- Does the ISO7761DW support real-time monitoring?
Yes, it facilitates continuous monitoring of system performance).
