SIT9005ACU1D-25SM

Programmable oscillators are essential components in many electrical and electronic systems, providing an adjustable and precise signal source. Among various types of programmable oscillators, the SIT9005ACU1D-25SM oscillator is a specially designed anisotropic magneto-resistive (AMR) ferrite material applicator designed for precision time-frequency reference applications for astronomical devices.

The SIT9005ACU1D-25SM programmable oscillator consists of two major components: an integrated circuit (IC) and a ferrite material actuator. The integrated circuit includes an AMR sensor, a digital-to-analog converter (DAC), and a temperature compensated frequency output (TCXO) stage. The integrated circuit is further connected to the ferrite material actuator, which is responsible for inducing and detecting magnetic flux in the ferrite material actuator to produce a variable frequency output.

The SIT9005ACU1D-25SM oscillator operates at an accuracy of 1 part-per-million (PPM), making it suitable for precision timing and frequency reference applications such as timing astronomical observation devices. It is able to produce various waveforms from a single oscillator, including sinusoidal, square, and pulse wave waveforms. Additionally, it features a temperature compensation range between -25°C and +85°C, and can operate in the frequency range of 130KHz to 120MHz.

The working principle of the SIT9005ACU1D-25SM oscillator is based on the anisotropic magneto-resistive (AMR) principle, whereby when a magnetic field is applied to the ferrite actuator, the resistance of the material changes, thereby changing the frequency of the oscillator output. The output frequency is also affected by the ambient temperature and the internal temperature of the device, and the oscillator is designed to compensate for these effects. The output frequency of the oscillator is adjusted by the values of DAC, which is set by the external user. The AMR sensor is responsible for measuring the resistance of the ferrite material, the TCXO stage is responsible for compensating for temperature effects, and the DAC is responsible for setting the output frequency.

Due to its high accuracy, temperature tolerance, and frequency range, the SIT9005ACU1D-25SM oscillator is widely used for precision timing and frequency references in a variety of applications, including astronomy, telecommunications, navigation, radar and sonar, and military applications. It is also widely used as a timing reference for other devices and systems, such as sensors, microprocessors, and data acquisition systems.

In conclusion, the SIT9005ACU1D-25SM oscillator is a programmable oscillator based on the AMR principle, capable of producing signals of various waveforms and frequencies. It is widely used in precision timing and frequency reference applications due to its high accuracy, wide temperature range, and wide frequency range.