LTC6930IDCB-5.00

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The LTC6930IDCB-5.00 is an ultra-low noise programmable timer from the Clock/Timing, Programmable Timers and Oscillators category. It is an extremely versatile and versatile timer providing a wide frequency range from 1kHz to100MHz. At the same time, it provides very low jitter of less than 1ps, making it suitable for high-speed and precision applications.

Applications for the LTC6930IDCB-5.00 range from clock dividers and frequency synthesizers to sample rate converters, voltage-controlled oscillators, clock jitter removal, and clock synchronization. It integrates four programmable divider chains with dual edges per programmable divider, making it possible to generate six million 8-bit highly synchronized outputs. The synchronization of these divided outputs enable low-jitter designs with large frequency settings.

LTC6930IDCB-5.00 Working Principle

The LTC6930IDCB-5.00 is based on the control logic coupled with programmable dividers that allow for 8-bit wide frequency resolution from 0.5 Hz to 100MHz. Each divider chain is programmable with a minimum frequency resolution of 0.5 Hz. All dividers are controlled via serial interface either with 4-wire SPI or I²C.

The first step in the working process begins with a precision external low-noise crystal oscillator operating at 5.00 MHz. This crystal oscillator will be the reference oscillator for the LTC6930IDCB-5.00. This reference clock signal is fed into the precision architecture of the LTC6930IDCB-5.00 and it results in the generation of low-jitter clock cycles of a predetermined frequency up to 100MHz.

The next step is to choose the output frequency desired. This is done by programming the device with a frequency setting through its serial interface. The desired frequency is divided down to the chosen output frequency, ranging between 0.5 Hz and 100MHz, by the internally programmable divider chains. The programmable divider chains can divide down a reference clock up to a resolution of 0.5 Hz, based on the requirement.

Once the divider settings are programmed, the LTC6930IDCB-5.00 creates a wide range of waveforms such as sine wave, triangle, square, ramp etc. for various clock/timing applications. This is accomplished by the selection of various loop filter settings. The internal loop filter also has an adjustable capacitance value for high frequency stability and reset/stop time.

The output of the LTC6930IDCB-5.00 is a synchronized clock signal within a frequency range of 0.5 Hz - 100MHz. This synchronized signal is then fed to the target IC or FPGA or ASIC to further be used as the clock signal.

Conclusion

The LTC6930IDCB-5.00 is a highly accurate and low jitter programmable timer. It is an easy to use and highly configurable solution for all your clock/timing applications. It is versatile enough to provide a frequency range from 0.5 Hz to 100MHz with adjustments as low as 0.5 Hz, which makes it perfect for high speed and high precision applications.

The LTC6930IDCB-5.00 is a reliable and robust solution for all kinds of timing, synchronization, sampling and other timing needs. It is a simple, cost effective and yet powerful solution for integrating low jitter, high speed and low cost timing solutions within a wide range of applications.

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