SIT3809AC-2-25NH

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Programmable Oscillators are electronic devices that produce an electrical signal at a predetermined frequency, often referred to as an analog or digital "clock". They are found in a variety of applications, including clocks, timers, logic circuitry, and telecommunications. The SIT3809AC-2-25NH is a programmable oscillator designed for use in cellular phones and RF communication applications. This article will look at the application field and workings principle of the SIT3809AC-2-25NH.

Application Field

The SIT3809AC-2-25NH is a precision programmable oscillator designed for use in cellular phones, RF communication systems and applications that require high stability and accuracy. The SIT3809AC-2-25NH can be used in a variety of applications, including but not limited to baseband and intermediate frequency (IF) synthesizers, direct digital synthesizers and reference oscillator applications. It is also widely used in telecommunication systems, such as GSM and CDMA. The SIT3809AC-2-25NH provides a level of accuracy and stability due to its low temperature drift and wide operating temperature range (-30°C to +85°C).

Working Principle

The SIT3809AC-2-25NH utilizes pulse density modulation (PDM) to achieve high quality and low noise outputs. PDM is a type of digital modulation where a sequence of pulses with varying durations are transmitted over a variety of mediums such as airwaves. It is usually used to transmit digital data. The SIT3809AC-2-25NH sends a series of high and low pulses of varying lengths to produce an output waveform. The varying lengths of the pulses determine the frequency of the output waveform. The waveforms generated by the SIT3809AC-2-25NH are very accurate and stable, making them ideal for applications such as frequency synthesizers and medical device testing.

The SIT3809AC-2-25NH is composed of a digitally controlled oscillator (DCO), a phase-locked loop (PLL), and a frequency divider. The DCO produces a sinusoidal waveform which is then fed into the PLL. The PLL compares the DCO output with the reference clock and adjusts the frequency and phase accordingly. The output of the PLL is then fed into the frequency divider which divides the input frequency down to the desired output. This output is then further filtered and amplified before being fed out to the system.

The SIT3809AC-2-25NH is a popular programmable oscillator due to its high accuracy, stability, flexibility and small size. It is widely used in a variety of applications and can be used in place of an analog clock to achieve more precise and accurate timing. Its small size and low power consumption make it an ideal choice for a variety of applications.

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