SIT8009BIT71-33N

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Programmable Oscillators are an important class of integrated circuit (IC) components used in many electronic systems. SIT8009BIT71-33N is one such integrated circuit, designed to offer highly precise, low-jitter frequency control in a wide range of applications. This article explains the application field and working principle of SIT8009BIT71-33N.

Application Field

SIT8009BIT71-33N is used for wide-ranging frequency control applications in which fast frequency selection and long operating life are important considerations. The integrated circuit is suitable for synchronous clocking applications including:

• Digital telecommunications systems
• Network Clocking Perfection
• High-Rise Boiler Control
• Critical Timing Systems
• Automotive Control Electronics

The integrated circuit can also be utilized for frequency generation of signals for use in:

• Satellite broadcast receivers
• Wireless communication systems
• Radio navigation systems
• Doppler speed sensors

Working Principle

The SIT8009BIT71-33N integrated circuit is a low-jitter, high-precision programmable clock generator. It is based on a low-jitter analog PLL (Phase Locked Loop) architecture and utilizes a single reference frequency to produce a stable output signal. The frequency of the output signal is determined by the programmable divider element in the PLL circuit. The divider can be programmed by the host system to generate an output clock frequency that is an integer multiple of the reference frequency.

The PLL circuit also contains an on-chip temperature-compensated voltage-controlled oscillator (VCO). This oscillator is powered by a stable voltage supply and produces an output signal with a frequency that is proportional to the input voltage. The VCO is used to ensure that the frequency of the output signal remains stable, even if the system supply voltage varies.

The integrated circuit has two output lines. The first, the SCLK line, is the main synchronous clock output. The second line, the CLKOUT line, is a buffered, low-jitter, output line that can be used to synchronize the main output clock to other components in the system.

Additionally, the SIT8009BIT71-33N features a multi-bit divider counter that can generate integer frequency dividers of any size up to 8 bits. The divider is accessed through a serial port interface, allowing the user to quickly and easily change the divide ratio of the PLL circuit.

In summary, the SIT8009BIT71-33N is an integrated circuit designed for precise, low-jitter frequency control in a variety of applications. Its wide-ranging functionality and low-power consumption make it ideal for mission-critical clocking applications where reliable operation is essential.

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