SIT9120AC-1CF-25S133.300000X

An oscillator is an electronic device typically used to generate a square wave or sine wave signal at a precise frequency. Oscillators can be used to create sound or signals in various applications, such as telecommunications, audio equipment, radio receivers, radar and various test and measurement systems. One such oscillator is the SIT9120AC-1CF-25S133.300000X oscillator, and this article details its application field and working principle.

The SIT9120AC-1CF-25S133.300000X oscillator is a low power, high performance oscillator IC capable of operating in the frequency range of 100KHz to 133.3MHz. It is a fully integrated, temperature compensated differential oscillator that provides low power, low phase noise, and tight frequency tolerance features. In terms of applications, the SIT9120AC-1CF-25S133.300000X is suitable for use in various telecom systems, such as GSM/EDGE, CDMA, WCDMA, and TD-SCDMA specifications. It can also be used in satellite communication systems, as well as wi-fi and Bluetooth systems.

The key features of the SIT9120AC-1CF-25S133.300000X oscillator are its low power consumption, high stability, temperature compensation, and low output noise. In terms of power consumption, the chip requires a maximum supply current of 3 mA, which makes it attractive for low power applications. It also has a temperature stability of 0.1 ppm/°C, meaning it is highly suitable for use in temperature sensitive applications. In terms of output noise, the device can achieve an output noise level as low as -140 dBc/Hz at 1MHz offset.

In terms of its working principle, the SIT9120AC-1CF-25S133.300000X uses a voltage-controlled oscillator (VCO) topology. The VCO\'s frequency is determined by an external resonant circuit, which is comprised of a capacitor and inductor. A control voltage is used to tune the oscillator\'s frequency, and this voltage is generated by a high precision phase lock loop (PLL) circuit. Once the PLL is locked, the frequency of the oscillator is determined by the external resonant circuit. The oscillator typically has a negative resistance region at a few hundred kHz, and this is where it will start to oscillate and generate a stable sine wave signal.

In conclusion, the SIT9120AC-1CF-25S133.300000X is a versatile oscillator suitable for use in various telecom systems, from GSM/EDGE to Bluetooth and Wi-Fi systems. Its main benefits are its low power consumption, high stability, temperature compensation, and low output noise. The oscillator works on a voltage-controlled oscillator topology, and its frequency is determined by an external resonant circuit and a high precision PLL.