SIT3809AI-D-28EX

Application field

The SIT3809AI-D-28EX programmable oscillator is a high performance device with frequency range of 0.25 MHz to 80 MHz. It is a common choice for a variety of applications, such as satellite and communications systems, military, test and measurement, and general purpose applications. The device features a low jitter (0.02psrms) and phase noise performance (-134dBc/hz@10Khz) providing excellent signal integrity in critical applications. Additionally, the device features a wide voltage range (2.7V - 3.6V) making it suitable for a variety of applications.

The device also features an on-board Temperature Compensated Crystal Oscillator (TCXO). This allows the user to compensate for temperature changes as the device moves from one environment to another, which can help to minimize frequency errors due to temperature variation. The device also features adjustable pull range and a wide range of programmable drive modes which helps to improve performance in various applications.

Working Principle

The SIT3809AI-D-28EX programmable oscillator is a digitally programmable oscillator, meaning that it can be programmed to mobilize a range of frequencies and settings according to user preferences. The device is typically programmed using a serial protocol such as I2C or SPI via a standard communication interface. This allows the user to easily program the characteristics of the oscillator and to adjust settings quickly as required.

The device operates on a two-phase sinusoidal signal, meaning that when clocked, a two-phase signal is generated with the two outputs 180 degrees out of phase. The outputs can produce different frequencies on both channels depending on the user programmable settings, allowing the user to optimize their system performance. It also features a programmable bandwidth control, allowing the user to control the curve of the sinusoidal signal.

The SIT3809AI-D-28EX also features an internal frequency compensator (TCXO) which can be used for frequency stability and accuracy. This allows the user to compensate for temperature variations and other factors which may affect the frequency of the oscillator. It also features an adjustable pull-range which allows the user to adjust the output voltage to ensure precise output frequencies across a wide range of conditions.