SIT9005ACB2D-33SH

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Introduction to Programmable Oscillators

Programmable oscillators are miniature devices that generate a signal at a specific frequency. These oscillators are built based on two main components, a variable resistor, and a variable capacitor. In a programmable oscillator, the output signal is determined by the capacitance and inductance of the variable components. In addition, these oscillators are also commonly referred to as synthesized oscillators, due to their capability of producing an electronically synthesized signal without the need for a mechanical component.

SIT9005ACB2D-33SH Application Field and Working Principle

The SIT9005ACB2D-33SH is a miniature programmable oscillator developed by SiTime Corporation. This oscillator is designed for ceramic resonator applications and is mainly employed in several areas ranging from military/aerospace equipment and industrial automation machinery, to medical and automotive equipment.

The SIT9005ACB2D-33SH operates at a frequency of 7.745kHz. Its operating temperature range is between -20°C and +70°C and its typical jitter is 3.3ps. This oscillator has a 35-pin through-hole type design and is programmable through the I2C protocol, allowing for a wide range of frequencies and output waveforms.

The working principle of the SIT9005ACB2D-33SH oscillator is based on the Ceramic Resonator Method. This involves utilizing two ceramic resonators, each generating a signal of a different frequency. The difference between the two signals is then fed into a phase-locked loop (PLL) circuit, which is responsible for controlling the phase and frequency of the output signal. This process allows the device to generate a wide range of frequencies with greater stability, accuracy, and a low level of jitter.

Conclusion

The SIT9005ACB2D-33SH is a miniature programmable oscillator designed for the production of highly accurate and stable signals. Due to its low jitter and programmability, this oscillator finds application in a wide range of areas from medical and automotive equipment to aerospace equipment. Its working principle is based on the Ceramic Resonator Method, where two ceramic resonators generate signals with different frequencies, which are then fed into a PLL circuit for output regulation.

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