Fibre optic transceiver reduces in-vehicle networking costs, says KDPOF

The lasts integrated fibre optic transceiver (FOT) from KDPOF is the KD9351, which is claimed to reduce costs for optical in-vehicle networks at 1Gbit per second.

The KD9351 incorporates transmit and receive optoelectronics into a single component. It is an optical transceiver for 100Mbits per second up to 1Gbit per second and has a small footprint. “Compared to STP (shielded twisted pair of copper wires), the combination of the new KD9351 FOT with the continuing KD1053 IC cuts the cost for 1Gbit per second by 30 per cent,” explained Carlos Pardo, CEO and Co-founder of KDPOF.

He added that the integrated device provides enhanced efficiency and paves the way to optical multi-gigabit Ethernet in vehicles.

The KD9351 integrates the transimpedance amplifier, photodiode, LED driver, and LED into a single device. Other benefits are a shorter supply chain and no test duplication with the final test at the Tier1. The assembly of the FOT and the existing KD1053 IC is simplified and the connector offers snap-fit without soldering, adds the company.

The KD9351 reuses low-cost MEMs encapsulation and allows SMD reflow assembly with 8.0 x 7.0mm LGA components. It is fully shielded against electromagnetic radiation. Fibre connection is via a simple plastic connector placed on top of the assembly. The temperature range, from -40 to +105 degrees C, conforms with harsh automotive environmental requirements. The FOT withstands motor conditions with a vibration class of V2. Additionally, it endures water without sealing. EMC performance is excellent even with the ECU shield case removed, reports KDPOF, as shielding is integrated into the PCB component. Optics implement Tx and Rx lenses. Samples are available now.

Applications for the new KD9351 include safe Ethernet backbones and sensor links for advanced driver assistance systems (ADAS).

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