LMX2335USLBX

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The LMX2335USLBX clock/timing device is designed to provide multi-frequency, low-jitter and low-power clock synchronization and channelization in a wide range of applications. The device is feature rich and offers multiple clocking options for each of the device’s functional blocks. Its simple, yet powerful, architecture makes it suitable for a wide range of applications.

Application Field

The LMX2335USLBX is suitable for telecommunications, storage and multimedia applications, such as wireless and cellular data links, wireless video conferencing, and clock synchronization and timing of digital video signals. The principal functions of the LMX2335USLBX are threefold; channelization, synchronization and timing. Each of these elements provide the necessary signals required for digital communication and can be configured to meet the individual application’s requirements.

Channelization is the process of outputting a number of digital channels from a single clock signal. This can include equalizing and boosting signals. Synchronization ensures that all signals are in the same phase at whatever clock rate is set. Timing is used to regulate the speed of a transmission, and is used to synchronize multiple digital devices.

The LMX2335USLBX offers a wide range of low-power, high-accuracy clock, timing and synchronization solutions for applications requiring low-jitter, low-power operation. The device can generate multiple frequency clocks, and provides a high degree of flexibility to govern clock phase and frequency. It can also be used in both synchronous and asynchronous applications.

Working Principle

The LMX2335USLBX utilizes a Phase Lock Loop (PLL) system to generate multiple frequency clocks. The PLL consists of a frequency synthesizer and a reference oscillator. The frequency synthesizer is used to generate clock signals from digital data. The reference oscillator is used to control the frequency of the clock signals. The output from the frequency synthesizer is compared to the reference oscillator and then used to adjust the output frequencies. This allows for the synchronization of multiple digital elements.

The PLL system is based on a VCO (voltage-controlled oscillator) which can be set to different frequencies by changing the input voltage. The LMX2335USLBX also has a built-in fractional-N frequency synthesizer, which allows for more fine-tuning of the clock frequencies. By increasing the resolution of the PLL, the VCO can be set to a wide range of frequencies, even at very low speeds.

The LMX2335USLBX also has an integrated programmable divider and phase detector, which can be used to control the phase and frequency of multiple clock signals. The divider divides the input frequency by a programmable amount and the phase detector can be used to synchronize the output clock frequencies. The integrated programmable divider and phase detector also provides Clock Deskewing, where the output signals can be adjusted to account for any differences in the input clock signals.

Finally, the LMX2335USLBX can be used to generate pulse-width modulated signals. The PWM modulator output is used to control the duty cycle of a signal or to generate a wide range of clock signals at different frequencies. This helps reduce EMI/RFI noise, improves reliability and accuracy when generating different clock signals.

The LMX2335USLBX is a powerful and versatile device that is capable of providing multiple frequency, low-jitter and low-power clock synchronization and channelization in a variety of communications, storage and multimedia applications.

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