LMK04131SQX/NOPB

LMK04131SQX/NOPB Application Field and Working Principle

Clock/timing generators, PLLs, and frequency synthesizers are among the most important components of many modern communication and computer systems. The LMK04131SQX/NOPB is a high-performance and highly integrated frequency synthesizer incorporating multiple PLLs and wide-range frequency synthesizers. It is ideal for use in communication, computer, imaging, and automotive systems.

Features

The LMK04131SQX/NOPB supports high-frequency input frequencies and up to six independent outputs. It also features adjustable output phases, wide-range frequency synthesizers, adjustable power supply, and an internal 32-bit counter for frequency measurement. The integrated PLLs are based on a linear voltage-controlled oscillator architecture and provide fast switching speeds, low jitter, and low power consumption.

Application Field

The LMK04131SQX/NOPB is most suitable for systems demanding high-bandwidth synchronization, such as communication, computer, imaging, and automotive systems. Its wide-range frequency synthesizers can be adjusted to cover various input frequencies. Its adjustable output phases enable generation of accurate and jitter-free signals for transmission and reception of both analog and digital signals. It also features inbuilt 32-bit counters for frequency measurement.

Working Principle

The main circuit of the LMK04131SQX/NOPB consists of a linear voltage-controlled oscillator (VCO) and two PLLs. The VCO provides an adjustable output frequency over a wide range. The outputs of the two PLLs generate relatively low-frequency outputs with adjustable phases. The phases are adjusted using a differential digital loop filter and a digital feedback control loop. Furthermore, the upper and lower control frequencies and the output frequencies can be adjusted using digital pins.

Conclusion

The LMK04131SQX/NOPB is a high-performance and highly integrated frequency synthesizer incorporating multiple PLLs and wide-range frequency synthesizers. It is suitable for use in communication, computer, imaging, and automotive systems and can provide exact and jitter-free signals for transmission and reception purposes. The phase-locked loops are based on a linear VCO architecture and provide fast switching speeds, low jitter, and low power consumption. The output frequencies and phases can be adjusted by external digital pins.