TJA1051T/3,118

The TJA1051T/3,118 is an integrated family of physical layer transceivers designed for use in automotive embedded networks, commonly referred to as Local Interconnect Networks (LINs). They are compatible with the LIN 2.x and 2.0B specifications and meet the requirements of LIN version 2.1 or higher. The transceivers provide simplified and exceptional signal integrity, reliable operation and full compatibility with the LIN protocol, enabling robust and cost-effective solutions for automotive networking applications.

This transceiver is designed for operating over a wide range of temperature and pressure conditions, including extended temperature range and load dump conditions up to 120°C, and under cold and hot cranking engine conditions. The protected supply is also equipped to meet ISO 7637-3/-2/-1 and other requirements such as electrostatic discharge (ESD) protection. The TJA1051T/3,118 is capable of providing a contactless voltage isolation channel up to 1.4 kV.

The interface consists of a transmitter, a receiver and a power supply circuit, all of which are integrated into one package. The main features of the TJA1051T/3,118 include low power consumption, wide supply range, integrated Wake-Up signal detect and programmable output structure, compatibility with the LIN 2.x and 2.0B specifications, integrated support of 5V and 3V transceivers, and support for fast wake up features.

The TJA1051T/3,118 transceivers have a driver section with an adjustable output power, a high-gain receiver amplifier and a multi-protocol state machine with power down functionality. It also has a programmable wake up signal detector, which is capable of detecting a wake up signal within the LIN message cycles. It also supports a wake on / off signal, which can be used for power saving. The transceiver has an integrated power supply control, which controls the power transmission on the LIN bus.

The working principle of the TJA1051T/3,118 transceivers is as follows. A LIN bus consists of a single twisted pair cable connecting multiple nodes. The TJA1051T/3,118 transceiver has a differential driver and receiver. In the transmitter, the signal is encoded into a Manchester code and lossy-transformed. The encoded signal is then sent over the bus. In the receiver, the received signal is lossy-transformed and then decoded back into the original form.

The power supply of the TJA1051T/3,118 transceiver is designed to operate over a wide range of supply voltages. It supports both 5V and 3V supply voltages with a programmable output structure. It also has an integrated wake-up signal detector circuit. The wake up signal can be transmitted through the use of the transceiver\'s inbuilt wake-up signal detector, which can detect wake-up signals within the LIN message cycles. The power saving feature allows the transceiver to power down if no activity is detected on the LIN bus.

The TJA1051T/3,118 transceivers can be used in a wide variety of automotive embedded networks. It provides cost-effective and reliable solutions for applications such as engine management, suspension control, body control, interior and exterior lighting and climate control. It is especially suitable for low-power applications. It is easy to configure and provides good signal integrity and power efficiency. With its integrated support for 5V and 3V transceivers and fast-wake up features, the TJA1051T/3,118 transceivers are perfect for automotive networking solutions.