The ATA6630 is a high-speed CAN transceiver from Microchip (formerly Atmel) that serves as the interface between a Controller Area Network (CAN) protocol controller and the physical bus. It is designed for automotive and industrial applications requiring reliable and robust communication in harsh environments. The ATA6630 supports the CAN protocol according to ISO 11898-2 and SAE J2284 standards.

Applications:

• Automotive CAN networks (body control, powertrain, chassis)
• Industrial automation (robotics, process control)
• Building automation (HVAC, lighting control)
• Agricultural machinery
• Transportation systems (trains, buses)

Features:

• High-speed CAN transceiver (up to 1 Mbit/s)
• Compliant with ISO 11898-2 and SAE J2284
• Low power consumption in Standby and Sleep modes
• Wake-up via CAN bus
• Overtemperature protection
• Short-circuit protection to GND and VCC
• Undervoltage protection
• TXD timeout function
• Common-mode choke not required
• Excellent EMC performance
• Lead-free and RoHS compliant

Benefits:

• Robust Communication: The ATA6630 provides reliable CAN communication in harsh environments, ensuring data integrity and system stability. It tolerates voltage transients and electromagnetic interference common in automotive and industrial settings.
• Reduced Power Consumption: Low-power modes (Standby and Sleep) minimize current draw when the CAN bus is inactive, extending battery life in automotive applications and reducing overall energy consumption in industrial systems.
• Simplified System Design: Integrated protection features (overtemperature, short-circuit, undervoltage) reduce the need for external protection components, simplifying board layout and reducing BOM cost. The elimination of the common-mode choke further simplifies design.
• Enhanced Safety: The TXD timeout function prevents the transceiver from blocking the CAN bus in case of a microcontroller failure, improving system safety and preventing communication disruptions.
• Compliance with Standards: Adherence to ISO 11898-2 and SAE J2284 standards ensures compatibility with existing CAN networks and simplifies system integration.

Additional Details:

The ATA6630 operates from a single 5V supply and provides differential transmit and receive capabilities for the CAN bus. It includes internal slope control to minimize EMI emissions. The device offers various protection mechanisms to safeguard against overvoltage, undervoltage, overtemperature, and short circuits. The CANH and CANL pins are protected against transients according to ISO 7637-3. The ATA6630 is typically available in SOIC or VDFN packages. Proper termination of the CAN bus with 120-ohm resistors at each end is crucial for signal integrity and reliable communication.