SIT8008BCE2-18N

Programmable oscillators are devices used to generate electrical signals. The SIT8008BCE2-18N is a particular type of programmable oscillators. This chip is a high precision voltage-controlled oscillator (VFO) based on a phase-locked loop (PLL) architecture. It produces a sinusoidal output signal whose frequency (and optionally phase) is controlled by an external voltage.

The SIT8008BCE2-18N application field is wide. It can be used in applications such as precision signal generators, frequency synthesizers, clock generators, RF tuners, and signal transceivers. It is capable of input frequencies covering 1 KHz to 18 MHz and output frequencies covering 0.1 Hz to 37.5 MHz with a tuning range of 30 MHz.

The SIT8008BCE2-18N working principle is quite simple. It starts with an internal oscillator, which is then multiplied by a programmable frequency multiplier.The output of the frequency multiplier is fed into a phase detector, where it is compared with the frequency of a reference signal. The result of this comparison is used to control the variable frequency oscillator. The output of the variable frequency oscillator is again fed back into the phase detector, where it is compared to the reference signal.The difference in frequency is used to adjust the oscillator\'s frequency until it matches the reference. This process is called ‘phase-locked loop’.

Finally, the signals from the oscillator and the reference signal are then used to control the input voltage of the SIT8008BCE2-18N chip, which then adjusts the output frequency and optionally the phase.The device also features a frequency control register (FCR) which can be programmed to set frequency and optionally phase, as well as a power-down feature.

To sum up, the SIT8008BCE2-18N is a sophisticated device designed to generate a sinusoidal output signal whose frequency and optionally phase can be controlled by an externally supplied voltage. While its application field is wide, ranging from precision signal generators to RF transceivers and clock generators, its working principle is relatively simple. This chip does not require an external reference, but can be programmed directly to generate accurate frequency and phase signals.Overall, the SIT8008BCE2-18N is an efficient and reliable programmable oscillator.