SN65LVDS051DG4

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The SN65LVDS051DG4 is an integrated circuit (IC) manufactured by Texas Instruments and belongs to their general-purpose low voltage differential signaling (LVDS) family. This device functions as an LVDS transmitter, allowing 5 - 15V digital signals to be transmitted over twisted pair cabling at speeds up to 1.2Gb/s. It is implemented as an out of band (OOB) transmitter with data inversion, which is useful if the transmitted signal needs to be synchronized with an external source. The LVDS signaling scheme is an ideal choice for applications requiring high throughput, low power consumption and short-distance transmission.

Overview

The SN65LVDS051DG4 is optimized for use in audio and video systems which require reliable, low power and low latency signal transmission. It features a 10-bit parallel input data interface, with a maximum data rate of 1.2Gb/s and an effective output of 1.2V differential voltage. The LVDS transmitter utilizes a switching current source approach such that power consumption is dependent on data rate and the number of bits in use and offchannel reflections are minimized. The device can transmit data over 15 feet and is nearly immune to noise and EMI.

Application fields

The SN65LVDS051DG4 is mainly used in high definition digital signal applications such as displaying HD audio/video content, security surveillance and digital signage. It can be used in a wide range of consumer electronics, including HDTV receivers, digital video recorders (DVRs), digital security cameras and HD satellite systems. It is also suitable for automotive applications such as ADAS, infotainment and radar.

Working principle

The SN65LVDS051DG4 functions as a differential voltage-mode transmitter which transmits data serially over a pair of differential pairs comprising two wires twisted together. During each transition from logic 0 to logic 1, the differential voltage swings from low to high, and vice versa during each transition from logic 1 to logic 0. The transmitted signal is detected by a receiver connected to the output of the transmitter, which interprets the logic levels as data.

Specifications

The SN65LVDS051DG4 provides a 10-bit parallel interface for serial or parallel data transmission. It features a maximum data rate of 1.2Gb/s and a differential output swing of 1.2V. Its power dissipation is dependent on data rate and the number of bits in use, with a maximum of 400mW. The device also features an optimized output driver architecture which reduces reflections from the cable and eliminates the need for additional termination resistors. The LVDS signaling scheme is immune to noise and EMI, and is particularly suitable for reliable, low-power and high fidelity signal transmission over short distances.

Conclusion

The SN65LVDS051DG4 is a versatile and reliable LVDS transmitter that is suitable for a variety of applications requiring short-distance, low power and high data rate signal transmission. It is ideal for HD audio/video applications, security systems and automotive applications, and is capable of transmitting data over 15 feet with low latency and nearly no EMI or noise interference. The device is optimized for minimal power consumption and optimized output driver architecture, making it an excellent choice for cost-effective and reliable signal transmission.

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