SIT9005ACU1G-25DL

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Programmable oscillators are components which enable users to control and customize the output frequency currents and voltage sizes. The SIT9005ACU1G-25DL is a typical example of programmable oscillators, which have a special application field and working principle.

The SIT9005ACU1G-25DL is a CMOS programmable oscillator device. It is specially designed for manufacturing high-frequency crystal oscillators integrating with SAW filters and Global Positioning System (GPS) receivers. It has a low power consumption of 0.5 mA. It is a cost-effective solution for application which requires high stability and reliability with low power.

The SIT9005ACU1G-25DL has four selectable output frequency ranges, covering 3MHz～56MHz, and its maximum frequency output tolerant range is up to ±25ppm at the 3MHz～50MHz frequency band. It has three selectable output voltage level in its output stage: 8.3V pp, 8.2V pp, and 8.1V pp. It also utilizes programmability with a wide range of enable logic and will not allow unlock if enable logic is not in the proper state. The oscillator is fully programmable, so the user can initiate programming through an on-board registers to configure the operating frequency, PPR and enable logic.

The SIT9005ACU1G-25DL\'s working principle is relatively simple. When the oscillator is powered on, it is in the standby state. When the enable logic is correctly provided, an internal band gap voltage reference provides a current on an internal frequency divider, which is connected to an external crystal oscillator and a supply voltage. This results in an oscillated waveform that is amplified through circuits in the oscillator, including the output amplifiers. Thus, a high-frequency signal is output.

The SIT9005ACU1G-25DL programmable oscillator has a wide range of applications. It is most typically used in consumer electronic devices, such as portable music players, handheld gaming devices, and mobile phones. It is also used in automotive electronics and high-end industrial control systems. In addition, it is widely used in GPS receivers, since it has a frequency output tolerance range of up to ±25ppm at the 3MHz～50MHz frequency band.

In conclusion, the SIT9005ACU1G-25DL is a cost-effective and reliable programmable oscillator designed for the applications requiring a high stability and reliability with a low power consumption. It has a wide range of applications, including consumer electronics, automotive electronics, high-end industrial control systems and GPS receivers. Its operating principle is relatively simple and it is programmable with a wide range of enable logic.

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