LMX25312294EVAL

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Evaluation and demonstration boards and kits are used to speed up the prototyping process of a new product or system. The LMX25312294EVAL is a member of that family, which is designed to quick start evaluation for an advanced system on chip (SOC). In this article, the application field and working principle of LMX25312294EVAL will be discussed.

The LMX25312294EVAL is a complete evaluation platform for LMX2531 clock generator integrated circuit (IC). The platform is designed to help engineers quickly evaluate the performance and capability of LMX2531. Apart from the IC, the platform also contains a reference design system composed of analog filters and other components. On top of the hardwares, there is also a complete development environment available, which provides an intuitive graphical user interface (GUI) to facilitate chip configuration and evaluation.

As a precision clock generator, LMX2531 is capable of delivering an extremely low phase noise clock output, making it an ideal choice for sophisticated applications where excellent signal purity and timing accuracy is required such as low bit-rate communication protocols, frequency synthesizers, over-sampling ADC, high-speed SerDes applications and beacons. With the help of LMX25312294EVAL, the chip can be easily configured and integrated into the abovementioned applications.

The device also supports a wide input frequency range of 10 MHz to 300 MHz and can generate up to 19 output clocks. The output frequencies and other parameters of the clock such as cycles-to-skip (CTS), spread spectrum modulation depth and phase offset can be configured through the development environment of the LMX25312294EVAL. Advanced features such as pulse-width modulation (PWM) output, frequency multiplication, and frequency redistribution are also supported.

The reference design of the EVAL platform have taken advantage of the features available on LMX2531IC. It includes a low noise, low drop-out positive voltage regulator and a trace-resistor type adjustable filter module for managing clock input. A series of four phase-locked loops (PLLs) are populated on the board, each of which can be configured as either an output frequency multiplier, a spread-spectrum modulator, or an output frequency divider. The 4-layer printed circuit board design employs microstrip technology for every signal interconnect, allowing for maximized signal integrity from the chip to the board edge.

From above, we can evidently feel the power and versatility of the LMX25312294EVAL evaluation platform. It not only helps to quickly evaluate the performance of the LMX2531 IC, but also provides the reference design and complete development environment that makes it a great choice for applications where excellent signal purity and timing accuracy is required.

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