SIT9005ACU1G-25NF

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Programmable oscillators are electronic components that generate electric signals at a fixed frequency or range of frequencies. The SIT9005ACU1G-25NF is a programmable oscillator that offers a wide range of frequencies from 9KHz to around 1.1GHz. It has a low phase noise, low EMI and a narrow frequency. This device is manufactured by Sitronix and is one of their most popular programmable oscillators.

Features:

The SIT9005ACU1G-25NF offers excellent tuning characteristics. It has a wide tuning range of -20MHz at all frequencies. It also features a low power consumption of 0.35mA typical, excellent phase noise performance of -90dBc/Hz, high stability and a high starting frequency (1.1GHz). The oscillator also has an advanced frequency accuracy of ±50 ppm, over a wide supply current range.

Application Field:

The SIT9005ACU1G-25NF is the perfect device for applications that require a reliable, low-noise, low-power and low-EMI programmable oscillator. It is an ideal solution for RF circuits, power amplifiers, PCS/GSM/CDMA communication systems, satellite communication systems, radar and instrumentation circuits. It is also ideal for IC design, robotics, monitoring systems, navigational systems, UPS systems, and remote control systems.

Working Principle:

The SIT9005ACU1G-25NF is a programmable oscillator that works on the principle of the VCO (Voltage-Controlled Oscillator). It consists of an external quartz crystal, which is connected to a dielectric resonator and is used as the primary frequency reference. The dielectric resonator is basically a capacitor, which is used to generate a fixed frequency signal. This signal is then used as an input to the oscillator, and the characteristics of the signal can be controlled using a number of external control options. These include an external control voltage, a temperature compensation diode, and a trim capacitor.

The external quartz crystal is the key component of the oscillator and provides a frequency reference for the oscillator. The signal from the external quartz crystal is first amplified to be able to generate a signal of sufficient amplitude. The amplified signal is then passed to the voltage-to-frequency converter, which converts it into a digitally controlled frequency signal. This signal is then further filtered to produce a pure sinusoid and is then either natively output or further divided within the chip.

The SIT9005ACU1G-25NF requires a minimum of 1.8V supply voltage, and a maximum current of 5mA. It is available in a 5-pad ceramic package and is RoHS compliant. The oscillator has excellent frequency stability and exceptionally low phase noise over a wide temperature range. This makes it an ideal choice for a wide range of applications.

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