SIT9005ACL1G-25SM

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SIT9005ACL1G-25SM is a 25MHz Programmable Oscillator whose high-performance frequency stability and low jitter are some of the most desirable properties for electro-mechanical components. This low-cost, low-power, programmable oscillator is a reliable tool for applications that require dependable timing accuracy. Programs through a wide variety of interfaces, including Ethernet, RS-232, and USB, allowing flexible designs with more control and less human intervention.

The SIT9005ACL1G-25SM offers frequency stability at any output frequency up to 25MHz with 0.01ppm accuracy in frequency stability over an extended temperature range (-40°C to +85°C). The cryogenic temperature range (-55°C to +125°C) is compatible with NASA requirements. The SIT9005ACL1G-25SM has typical jitter performance of 0.4ps for its output frequencies.

The main application fields for SIT9005ACL1G-25SM lie in high performance general purpose communication, test equipment, and military/aerospace systems. It is widely used in broadband communication systems and other clock dependent systems. It can also be used in precise timing control or synchronization in measurement or process control applications.

The SIT9005ACL1G-25SM has two operating modes. In standard mode, the oscillator has fixed frequency settings. In programmable mode, the oscillator can be programmed with a variety of clock settings and parameters via its various interfaces. For example, programmable devices will allow frequency selection, output waveforms such as sine/triangle, any combination of period and duty cycle, digital power-down commands, and other features.

The SIT9005ACL1G-25SM has a multi-piece design in order to keep the oscillator’s frequency characteristics both temperature and time stable. The construction of the SIT9005ACL1G-25SM consists of a quartz crystal and oscillator with an end plate on each end. The quartz crystal is mounted such that the structure as a whole is mechanically and electrically isolates it from external influences. The quartz crystal is connected to the oscillator, which is installed on the side of the quartz crystal and provides the necessary circuit for the oscillator to oscillate at 25MHz.

The oscillator is powered through a three-wire interface. It needs 1.2V DC voltage for voltage-controlled crystal oscillators (VCXOs), 1.8VDC voltage for temperature-compensated crystal oscillators (TCXOs), 1.8VDC voltage for temperature-compensated voltage-controlled crystal oscillators, and 2.5V DC voltage for component oscillators. This interface provides both power supply, control, and data transfer.

In summary, SIT9005ACL1G-25SM is an economical, low-power, and high-performance programmable oscillator. Its frequency stability and low jitter make it ideal for applications that require reliable timing accuracy. The device has a multi-piece design and offers great flexibility through its various programmable interfaces. It is an excellent choice for a wide variety of communication and aerospace applications.

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