DS90UR908QSQX/NOPB

Interface - Serializers, Deserializers

The DS90UR908QSQX/NOPB from Texas Instruments is a high-speed serializer equipped to both receive and transmit four data lanes. This versatile device is designed for applications in the display interface, imaging, and professional AV markets. This article will provide an overview of its applications and the working principle of the device.

Application Fields

The DS90UR908QSQX/NOPB offers features and specifications that make it suitable for a variety of applications. Audio and video data can be serialized and de-serialized with the addition of a few external components. It is used in devices that need to send digital information over a single serial link consisting of four data lanes, like automotive displays and media bridges. With low power consumption, low latency, and elevated data rates of up to 8 Gbps/channel, this serializer is an ideal candidate for high-resolution video streaming.

The DS90UR908QSQX/NOPB is an effective solution for the development of DVI, HDMI, and composite video sources. It has an adjustable equalization control and up to 8.5 dB of channel equalization, allowing for improved signal integrity. It is well-suited for environments that require reliable high-speed transmission of data, like medical and industrial imaging systems, broadcasting, and high-end televisions. It also integrates low-voltage differential signaling to meet a variety of signaling rates and intensities while selecting the best signal plane.

Working Principle

The DS90UR908QSQX/NOPB receives its inputs as four FPD-LINK III low-voltage differential signaling (LVDS) channel pairs. These channel pairs are differential pairs of input and output signals, allowing for the transmission of digital data. The serializer then converts the four channels of input data into a single high-speed link output.

The LVDS input signals are each digitized using a time-domain quantizer that evaluates the amplitude of the signal. This quantizer uses dedicated adaptive feedback logic to adjust the voltage levels of the incoming signals to match the output bit rate. The serializer then combines the four input LVDS channels into one output LVDS channel with a maximum data rate of 8 Gbps.

The output signal is then transformed into a low-voltage single-ended (LVS) RF signal using a transformer. The outputs of this serializer can be set to standard video timings or scrambled timing formats. In addition, flow control and control signals are added to optimize performance. The serializer then sends the output signal to a serial port buffer.

In applications where data needs to be sent through four output channels, a de-serializer can be used to convert the data back into its original form. The de-serializer is essentially the reverse process of the serializer, receiving the input stream from the serial port buffer and converting it back into four LVDS downstream outputs.

Conclusion

The DS90UR908QSQX/NOPB from Texas Instruments is a high-speed serializer that can both receive and transmit four data lanes. This serializer is well-suited for applications in the display interface, imaging, and professional AV industries, as it features adjustable equalization control with up to 8.5 dB of channel equalization. This device is capable of converting four FPD-LINK III LVDS channels into a single high-speed output link with a maximum data rate of 8 Gbps. It converts the input LVDS signals into an LVS RF signal and then sends it to the serial port buffer. A de-serializer can then be used to convert the data back into its original form.