8538BG-31LF

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Clock/Timing is a structural block of an overall system in many applications, and clock buffers, drivers are essential components of it. 8538BG-31LF, which is suitable for a variety of systems, is a reliable, cost-effective and high-speed clock driver from Nexperia, distinguished by its 50-mVpp output, accessible input and output delay modes and a low power consumption. This article aims to walk readers through the applications of 8538BG-31LF, and explain its working principle.

Application Field of 8538BG-31LF

As a clock driver IC, 8538BG-31LF is particularly suitable for systems with a strict signal integrity requirement. It has the ability to buffer and drive clocks and data at relatively high speed, low jitter and reduce the insertion loss through advanced signal conditioning techniques. Among the commercial applications of 8538BG-31LF, the following can be offered as a few examples.

• High-speed and low jitter transmission of serial digital interfaces for PC peripherals
• Communication network switches and server blades
• Gaming consoles and automotive infotainment systems
• Signal conditioning for high-speed serial data transmission

In addition, 8538BG-31LF is also widely used in industrial applications, such as storage controllers, ASICs, and logic gate arrangements.

Working Principle of 8538BG-31LF

The integrated circuit of 8538BG-31LF consists of a buffer driver element, two non-overlap clock generators, a delayed clock generator, an adjustable delay line and a clock attenuator. The buffer driver amplifies and conditions the input clock signals and provides a 50-mVpp output level with a high signal-to-noise ratio.

The clock generator accepts standard LVCMOS input signals, and the input/output delay modes offer a range of 0–25ns adjustable delay range, which can be precisely adjusted according to specific system requirements. The adjustable delay line is designed to fulfill the same purpose but with a much larger range of adjustable delays.

The non-overlap clock generator of 8538BG-31LF is used to create an upper-edge clock that is delayed relative to the original clock signal. The delayed clock generator takes in the upper-edge clock signal, and drives the clock attenuator by providing a buffered clock signal that is delayed by the adjustable delay line. The attenuator reduces the amplitude of the output to a specified level.

Hence, 8538BG-31LF helps increase the performance of systems in many high-speed or low jitter applications, by amplifying and buffering the input signals from clocks and data, and precisely controlling the output by adjustable delay line and delay modes. Furthermore, it provides a low power consumption and high signal-to-noise ratio for system stability and performance guarantees.

Conclusion

8538BG-31LF is a high-speed and low-power clock driver IC that offers reliable maximum performance in many systems. Its application fields include commercial and industrial uses, such as gaming consoles, automotive consoles and storage controllers. Its features also include 50-mVpp output and adjustable delay line, which supports a wide range of input and output delays and jitter conditioning.

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