LMX2316TM/NOPB

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The LMX2316TM/NOPB is a lower-cost frequency synthesizer which is optimized for use in communications infrastructure, and other industrial, automotive, and consumer electronic applications. This versatile device provides a low-jitter clock source, as well as a range of programmable functions. In this article, we will discuss the application field and working principle of the LMX2316TM/NOPB.

Application Field

The LMX2316TM/NOPB is a monolithic, low-jitter frequency synthesizer that is appropriate for use in a wide range of microcontroller-based systems. It can be used in a wide variety of applications such as mobile communications, networking, printing, automatic test equipment, motor control, industrial and medical instrumentation, automotive infotainment, audio processing, and fiber optics. The device can also be used for power management and as a general clock generator.

In particular, the LMX2316TM/NOPB is designed for applications where the frequency is rapidly changing, or the system needs to be synchronized with a stable reference clock. The device provides the flexibility to support multiple frequencies, as well as the ability to control the start-up and shut-down of the clock. The device also has a built-in voltage-controlled oscillator (VCO), allowing it to adjust its output frequency to stay on track with a reference frequency.

Working Principle

The LMX2316TM/NOPB uses a combination of frequency synthesis, digital phase-locked loop (DPLL) techniques, and frequency division to generate a low-jitter clock output. The device operates by first receiving an input source, such as a crystal oscillator (XO), external clock source, or the reference clock from an external device. This input is then divided and fed into the divide-by-N counter, which is followed by the DPLL circuit. This controls the output of the VCO.

The output of the VCO is then divided down and fed into the divide-by-M counter. The output of this circuit is then compared to the input reference clock. If there is a difference in frequency, the DPLL circuit adjusts the output of the VCO until the output of the divide-by-M counter matches the input reference frequency, and the output clock is synchronized. Once the reference and output clocks are synchronized, a low-jitter clock source is produced.

Conclusion

The LMX2316TM/NOPB is a low-cost, low-jitter frequency synthesizer that is well-suited for a variety of applications. It uses a combination of frequency synthesis, digital phase-locked loop (DPLL) techniques, and frequency division to generate a low-jitter clock output. It is an excellent choice for applications where the frequency is rapidly changing, or the system needs to be synchronized with a stable reference clock.

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