Overview
The LTC6820HMS#TRPBF, produced by Analog Devices Inc., is a specialized interface chip designed for isolated communications using the isoSPI (isolated SPI) technology. This device enables bidirectional SPI communications between two isolated devices through a single twisted-pair connection, ensuring high-speed data transfer and robust signal integrity. The LTC6820 is particularly suited for applications requiring electrical isolation, such as automotive communication systems, industrial automation, and safety-critical environments.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Voltage Supply (VDD, VDDS) | 2.7 | - | 5.5 | V |
| Operating Temperature Range (LTC6820I) | -40 | - | 85 | °C |
| Operating Temperature Range (LTC6820H) | -40 | - | 125 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| Lead Temperature (Soldering, 10 sec) | - | - | 300 | °C |
| Digital Voltage Output Low (MOSI, MISO, CS, SCK) at VDDS = 3.3V, Sinking 3.3mA | 0.2 | - | - | V |
| Digital Pin Input Leakage Current | - | - | 625 | nA |
Key Features
- Enables SPI communication over long distances using isoSPI technology.
- High-speed operation and data transfer, with differential signals reducing EMI.
- Operates across a wide voltage range: 2.7V to 5.5V.
- Ideal for automotive grade applications, meeting rigorous automotive industry standards.
- Enhanced signal integrity and noise immunity.
- Reduces the number of required isolation components.
- Designed for surface mounting, suitable for high-density PCBs.
- Flexible compatibility with various microcontrollers and processors with SPI capability.
Applications
- Automotive communication systems.
- Isolated data acquisition.
- Industrial automation systems.
- Safety-critical applications requiring isolation.
Q & A
- What is the LTC6820HMS#TRPBF used for?
The LTC6820HMS#TRPBF is used for isolated SPI communications between two devices through a single twisted-pair connection, particularly in applications requiring electrical isolation such as automotive and industrial systems.
- What is the operating temperature range of the LTC6820HMS#TRPBF?
The operating temperature range for the LTC6820I is -40°C to 85°C, and for the LTC6820H, it is -40°C to 125°C).
- What is the voltage supply range for the LTC6820HMS#TRPBF?
The voltage supply range for the LTC6820HMS#TRPBF is 2.7V to 5.5V).
- How does the LTC6820HMS#TRPBF reduce EMI?
The LTC6820HMS#TRPBF reduces EMI by driving differential signals using matched source and sink currents, eliminating the need for a transformer center tap).
- What are the key features of the LTC6820HMS#TRPBF?
The key features include high-speed operation, wide voltage range, enhanced signal integrity, and compatibility with various microcontrollers and processors).
- What are the typical applications of the LTC6820HMS#TRPBF?
Typical applications include automotive communication systems, isolated data acquisition, industrial automation, and safety-critical applications requiring isolation).
- Is the LTC6820HMS#TRPBF suitable for automotive applications?
- How does the LTC6820HMS#TRPBF achieve electrical isolation?
The LTC6820HMS#TRPBF achieves electrical isolation through a simple pulse transformer, allowing for hundreds of volts of isolation).
- What is the packaging format of the LTC6820HMS#TRPBF?
The LTC6820HMS#TRPBF is available in a 16-lead Plastic MSOP (TFSOP) packaging format).
- Is the LTC6820HMS#TRPBF compatible with existing isoSPI networks?
