SG-8003CA-PDM

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Programmable oscillators refer to the oscillators with adjustable parameters, such as frequency, power, phase, and duty cycle, which can precisely select up to a few ten thousands of specific frequencies or temperatures. Such oscillators can be used in applications such as radio, communication equipment, digital signal control, audio, and frequency output circuits. The most commonly used device for programmable oscillators is the SG-8003CA-PDM.

The SG-8003CA-PDM is an ultra-low-noise, high-stability, high-reliability, programmable oscillator developed by Sinoguide. This programmable oscillator is specially designed for use in advanced processors and DSP applications. It offers the advantage of low power consumption and fast response time for programming. This device features a wide range of operating voltage, ranging from 3V to 12V, and has a low current consumption of only 1mA at 3V and a maximum current consumption of 10mA at 12V.

The SG-8003CA-PDM has an integrated circuit (IC) design, which is based on an analog phase-locked loop (PLL) integrated with a high-speed digital-to-analog converter (DAC) in order to maintain the oscillation frequency of the output signal. The internal clock signal of the device is generated by an internal oscillator, and the frequency of the internal clock signal is adjusted accordingly by the DAC. Through this adjustment, the oscillation frequency of the output signal can be adjusted between frequencies as low as 1MHz and as high as 3GHz.

The main application fields of the SG-8003CA-PDM are digital signal processors, frequency synthesizers, transceivers and other communications equipment, as well as clock and timing systems. The working principle of the SG-8003CA-PDM can be divided into two parts: the first part is the internal clock signal generated by the integrated oscillator and the second part is the feedback loop used to adjust the frequency of the output signal.

The internal clock signal is generated by an internal oscillator, which is enhanced by the on-chip crystal. The frequency of the internal oscillator is controlled by the DAC, which provides a variable tuning range of frequencies. The variable tuning range is achieved by changing the frequency output voltage of the DAC. Once the desired frequency is tuned, the system locks at the desired frequency and the output signal is obtained.

The second part of the working principle is the feedback loop, through which the DAC adjusts the frequency of the output signal to meet the desired frequency. The feedback loop consists of a band-pass filter and a phase-locked loop (PLL). The band-pass filter is used to filter out the unwanted frequencies from the output signal and allows only the desired frequencies to pass through. The PLL is used for the stabilization of the output signal frequency. The PLL works by comparing the current temperature to the set temperature and adjusting the operating frequency of the oscillator accordingly.

In conclusion, the SG-8003CA-PDM is a highly versatile and reliable programmable oscillator that is used in a variety of applications. Its wide operating range and fast response time makes it an ideal choice for advanced processors, DSP applications and frequency synthesizers. It is an integral component for many applications and its sophisticated working principle ensures that it operates at its highest level of accuracy and precision.

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