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Capacitor isolation
ISO7721FDR
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Here's a concise introduction to the ISO7721FDR: The Texas Instruments ISO7721FDR is a digital isolator that offers high-speed data transfer, robust isolation, and reliable operation in harsh environments. This CMOS-based device supports two channels of 100Mbps communication, making it suitable for various industrial applications. The device features an isolation barrier with a >100-year projected lifetime at 1.5kV RMS working voltage, ensuring reliable performance even in safety-critical systems. With its wide supply range (2.25V to 5.5V), temperature range (-55°C to +125°C), and low power consumption, the ISO7721FDR is a versatile solution for industrial automation, motor control, power management, and other applications that require high-speed data transfer over long distances while maintaining electrical isolation.
The ISO7721FDR features include:
These features make it suitable for industrial automation systems, motor control applications, power management systems, and other high-reliability applications.
The package type for ISO7721FDR is Small Outline Packages - D0008B HEIGHT 1.75 (SOIC).
The manufacturer of the ISO7721FDR is Texas Instruments (TI), a US-based semiconductor company that designs, manufactures, and tests semiconductors and other electronic components for use in various industries such as industrial automation, automotive, medical devices, etc. TI was founded in 1930 and is now one of the largest and most well-known semiconductor companies in the world. The company has a diverse portfolio of products, including analog and digital integrated circuits, sensors, processing platforms, and other custom designed semiconductors.
The application areas of ISO7721FDR include industrial automation systems, motor control applications, power management systems, programmable logic controllers (PLCs), robotics, smart grid systems, building automation systems, and renewable energy systems.
Texas Instruments does not provide an exact equivalent product for ISO7721FDR as it has some unique features such as robust isolation barrier and high-speed capabilities. However, other similar digital isolators from TI include the ISO721x series, which offer a range of data rates and supply voltages. Other manufacturers like ON Semiconductor, STMicroelectronics, and Renesas also provide comparable products. The specific equivalent product would depend on the application requirements and operating conditions.
Rating | Catalog | Integrated isolated power | No |
---|---|---|---|
Isolation rating | Basic, Reinforced | Number of channels | 2 |
Forward/reverse channels | 1 forward / 1 reverse | Default output | High, Low |
Data rate (max) (MBps) | 100 | Surge isolation voltage (VIOSM) (VPK) | 8000, 12800 |
Transient isolation voltage (VIOTM) (VPK) | 4242, 7071, 8000 | Withstand isolation voltage (VISO) (Vrms) | 3000, 5000 |
CMTI (min) (V/µs) | 85000 | Operating temperature range (°C) | -55 to 125 |
Supply voltage (max) (V) | 5.5 | Supply voltage (min) (V) | 2.25 |
Propagation delay time (typ) (µs) | 0.0107 | Current consumption per channel (DC) (typ) (mA) | 1 |
Current consumption per channel (1 Mbps) (typ) (mA) | 1.6 | Creepage (min) (mm) | 4, 8, 8.5 |
Clearance (min) (mm) | 4, 8, 8.5 | Package/Case | SOP8 |
1.Q: How does the ISO7721FDR handle common-mode noise?
A: It provides a minimum common-mode rejection of 85kV/µs, ensuring stable performance in noisy environments.
2.Q: What is the package type of the ISO7721FDR?
A: It comes in an 8-pin SOIC (D0008B) package with a max height of 1.75mm and gull-wing leads for surface mounting.
3.Q: What is the recommended operating voltage for the ISO7721FDR?
A: The typical supply voltages are 2.5V, 3.3V, or 5V, with a range of 2.25V to 5.5V.
4.Q: Does the ISO7721FDR meet industry certification standards?
A: Yes, it complies with EU RoHS, has an ECCN of EAR99, and meets reinforced insulation requirements per IEC 60747-17.
5.Q: What is the maximum propagation delay of the ISO7721FDR?
A: The maximum propagation delay (tPHL/tPLH) is 21ns, with a skew of 5.5ns between channels.
6.Q: What are typical applications for the ISO7721FDR?
A: It’s used in industrial automation (PLC I/O), motor drives, power supplies, medical equipment, and any system requiring noise-resistant signal isolation between high/low-voltage domains.
7.Q: What is the pinout configuration of the ISO7721FDR?
A: The ISO7721FDR comes in an 8-pin SOIC package. Pins include VCC1 (side 1 supply), GND1, IN1/OUT1 (channel 1), IN2/OUT2 (channel 2), VCC2 (side 2 supply), and GND2. Refer to the datasheet for the exact pinout diagram.
8.Q: What are the key features of the ISO7721FDR?
A: The ISO7721FDR offers dual-channel capacitive isolation, 100Mbps data rate, 3000Vrms minimum isolation voltage, ±6kV HBM ESD protection, and operates from 2.25V to 5.5V. It has 1 forward/1 reverse channel and complies with reinforced insulation standards.
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06/24/2024
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