SIT9005ACT2H-18SC

Programmable Oscillators

Programmable oscillators are oscillatory circuits that can be programmed to generate different types of waveforms. One such type of oscillator is the SIT9005ACT2H-18SC oscillator. This oscillator is particularly suited for applications such as test and measurement, automotive and aerospace, data acquisition, medical instrumentation, and communications.

The SIT9005ACT2H-18SC oscillator is based on the Static Inductor Toggle Oscillator (SITO) topology. It has very low jitter, wide frequency range and excellent phase noise performance. It is available in two operating modes: single or dual-mode. The single mode offers a maximum frequency of 1.8GHz, while the dual mode has a maximum frequency of 800MHz. The device also comes with an integrated programmable resistance element to adjust the operating frequency.

The working principle of SIT9005ACT2H-18SC is based on the switching properties of bipolar transistors. This oscillator has two transistors, one PNP and one NPN, which are connected in series between the positive and negative supply rails. The bias current passing through the oscillator is set by the external control voltage, allowing the frequency of the oscillator to be programmed with great accuracy.

When the bias current is set to a certain level, the capacitances associated with the transistors will act as oscillators and generate a sinusoidal waveform. This sinusoidal waveform is AC coupled and buffered through an amplifier to produce a square wave output. The frequency of the square wave output can be programmed by adjusting the bias current with an external control voltage.

The SIT9005ACT2H-18SC oscillator is a highly versatile and reliable device. It is an ideal choice for a wide range of applications requiring precise and accurate frequency control. Its low jitter and high precision make it suitable for use in a wide array of test and measurement equipment. It is also suitable for a variety of communication and medical instrumentation applications.

In summary, the SIT9005ACT2H-18SC oscillator is a programmable device that can generate different types of waveforms. It has a wide frequency range, excellent phase noise performance and low jitter. It is ideal for a variety of applications including test and measurement, automotive and aerospace, data acquisition, medical instrumentation, and communications.