SIT9002AC-38N18DB

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Programmable oscillators are electronic components whose frequency can be adjusted in response to a digital input. Such oscillators are mainly used in communication systems to accurately tune a frequency channel, achieve synchronization of digital communication systems, and compensate for background noise influences. SIT9002AC-38N18DB is one of the most widely used programmable oscillators with a range from 10kHz to 10MHz and a low jitter of 13ps.

The SIT9002AC-38N18DB is a three-pin SPI programmable oscillator designed for a variety of applications, including radio base stations, satellite navigation systems, industrial automation systems and high-speed communication systems. Its main features are a fast phase jitter of 13ps, low phase noise of -185dBc/Hz, narrowband CMOS output, low operating temperature of -20 ℃ to 85 ℃, and 4mA low supply current.

SIT9002AC-38N18DB adopts a simple working principle which can be divided into five parts. Firstly, an external digital tuning circuit receives the input signal to set the required frequency. Secondly, a digital control section is used to generate a digital signal that is proportional to the required frequency. Thirdly, the digital signal generated is received by the voltage-controlled oscillator (VCO) to adjust the frequency output. Fourthly, the output signal is filtered by the flat filter and will be delivered to the CMOS output section. Finally, the oscillator output signal can be passed through an amplifier to adjust the signal range and provide additional power.

SIT9002AC-38N18DB is suitable for a variety of applications due to its wide frequency range and low phase jitter. In radio systems, it can be used to generate a local oscillator signal in the receiver circuit and a transmission signal in the transmitter circuit. In communication systems, it is an ideal choice for wireless communication systems to realize frequency tuning and low jitter requirements. In satellite navigation systems, it is used to generate a precise reference frequency and stabilize related spread-spectrum signals. In addition, the oscillator can be used in industrial automation systems and high-speed communication systems to control the frequency of various transducers and generate accurate control signals.

In conclusion, SIT9002AC-38N18DB is a three-pin SPI programmable oscillator with a wide range of applications, including radio base stations, satellite navigation systems and industrial automation systems. Its working principle consists of five steps, all of which are designed to ensure accuracy, stability and reliability of the oscillator signal output. Its features such as low phase jitter, narrowband CMOS output and low operating temperature make it an ideal choice for various communication systems and signal processing applications.

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