LMH0341SQ/NOPB

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Interface - Serializers, Deserializers

Serializers and deserializers (serdes) are a rapidly growing segment of the semiconductor industry that are critical to numerous communication applications. The LMH0341SQ/NOPB is a dual low-/high-speed serializer and declock that is part of a family of SerDes chips from Texas Instruments. This article will look at the use of the LMH0341SQ/NOPB in particular, including its application fields and working principals.

Application Fields

The primary application field of the LMH0341SQ/NOPB is in long-distance, high-speed communications. Notable applications of the device include broadband optical and coaxial communication, automotive Infotainment systems, and medical imaging.The LMH0341SQ/NOPB was designed for use in video, audio and other data streams that need to be sent over long distances or high frequencies. The device is designed to operate up to 280 Mbps and with a reach of 25 km. It is suitable for a wide variety of communication applications, including Gigabit Ethernet, Digital Video Broadcast-ASI, SMPTE-259M, SMPTE-2021M and other industry standard streaming formats.

Working Principles

The LMH0341SQ/NOPB consists of an LVDS differential line receiver, an on-chip clocking circuit, and a serializer deserializer (SerDes). The LVDS receiver is used to receive data over a differential pair at rates up to 280 Mbps. The on-chip clocking circuit synchronizes the data with the output data stream. The SerDes then serializes the data and transmits it to the destination. The serializer also inclues a descrambler that can be used to descramble data received from the destination.The device also features a programmable equalizer that is used to compensate for losses due to cable or PCB trace losses. The equalizer automatically adjusts to ensure optimal performance. Additionally, the device has an integrated clock recovery circuit that ensures an accurate output data rate.The LMH0341SQ/NOPB is also designed for EMI performance. The device features an on-chip spread spectrum clock generator (SSCG) that spreads the clock distribution harmonics to reduce EMI. Additionally, the device includes on-chip termination resistors and integrated ESD protection.

Conclusion

The LMH0341SQ/NOPB serializer and deserializer is a reliable and cost-effective solution for long-distance communication. Its key features, including its support for up to 280 Mbps, integrated clock recovery circuit and programmable equalizer, make it a suitable device for a wide range of serializer and deserializer applications.

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