TJA1041AT,518 Integrated Circuits (ICs)

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TJA1041AT is a single-component transceiver for fault tolerant twisted pair physical layer (CANFD PHY). It is designed for use on high-speed CAN and CAN FD networks. It has a built-in power dissipation of up to 1.5A and is suitable for harsh environmental conditions such as wide and varying temperature ranges. The device is based on the ISO 11898-2 standard and supports a nominal communication bit rate of 5Mbit/s.

The TJA1041AT\'s advanced power management features make it well suited for automotive applications. The patented Power Save Mode (PSM) and Sleep Mode (SM) conserves system power and reduces peak power dissipation while maintaining a low-current sleep state. In addition, the device supports programmable watchdogs, which monitor CAN messages and prevent a CAN node from entering an error state. The watchdogs can also be used to detect and recover from stuck nodes.

The TJA1041AT also features an Enhanced Wake-up and Data Rate (WDR) function, which increases the wake-up rate after the CAN bus is initially powered-up. This allows the device to rapidly enter Sleep Mode under low-noise and low-traffic conditions. In addition, the transceiver\'s automatic transceiver shut-down (TxSD) function can be used to reduce peak power dissipation during high-peak traffic conditions.

The TJA1041AT can be used for automotive networking applications as it can interface with microcontrollers using the Serial Peripheral Interface (SPI) and the Inter-Integrated Circuit (I2C) interface. Moreover, it is equipped with a range of protection mechanisms such as differential and common mode transient surge protection, electro-static discharge protection and in-rush current limiters. This ensures optimal operation of the device in harsh environments.

The device’s 518 application field is mainly in-vehicle communication networks, mission critical systems and distributed systems. In vehicle communication networks, the device’s enhanced wake-up and data rate features, along with its low power consumption makes it well suited for the CAN FD communication standard.

For mission critical systems, the device supports the IEC 60870-5-104 and IEC 61850-3 standards, and its high immunity to EMC, equivalent current noise (ENI) and surge voltages make it an ideal option for these applications. As for distributed systems, the enhanced wake-up and data rate feature, along with its low-power consumption and wide temperature operating range, make it suitable for industrial applications.

The working principle of the TJA1041AT is based on the CAN FD communication physical layer standard, ISO11898-2. It utilizes a differential signal transmission over a pair of twisted-pair cables. This ensures optimal signal transfer and ensures immunity from interference from external signals. The device supports various data rates from 33.3Kbit/s to 5Mbit/s and supports datagrams up to 64 bytes.

The TJA1041AT also features an integrated transceiver watchdog, which allows the device to detect error messages and prevent the CAN node from entering an error state. The device also has built-in current limitations and common-mode voltage range adaptation, which allows it to be used in high EMC environments. Additionally, it has built-in power saving modes, enabling it to reduce power dissipation while the CAN node is in sleep mode.

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