554AH000322DGR

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Pin Configurable/Selectable Oscillators

Pin configurable/selectable oscillators are an important class of oscillators which are designed to allow users to control their own frequency, pull range and power consumption characteristics. By simply changing the frequency pins, these oscillators can modify their output frequency and be tailored to various applications. The 554AH000322DGR is an example of such oscillators, exhibiting excellent accuracy and high stability, with a wide frequency selection range, superior temperature stability, low power consumption and wide operating temperature range.

554AH000322DGR Overview

The 554AH000322DGR is a 3.2 V pin selectable oscillator, with CMOS output technology. It is made from a TTL oscillator and contains a quartz crystal as the frequency sensing element for frequency selection. The operating frequency range is 5.0 to 100 MHz, with an absolute accuracy of 0.30 %, typical aging of 0.05 % per day, and a supply voltage tolerance of ± 10 %. All inputs and outputs are TTL level and ESD is rated at 3 kV.

554AH000322DGR Application Field

The 554AH000322DGR is suitable to be used in equipments such as transceivers and cellular base stations, fiber optics transceivers, modems, broadcast systems, time and frequency reference systems, high-speed computer system bus, and communications systems.

554AH000322DGR Working Principle

The 554AH000322DGR follows the typical configuration of pin configurable/selectable oscillators. It consists of a quartz crystal oscillator, a TTL oscillator and a coupling network. The quartz crystal provides the frequency element for frequency selection, the TTL oscillator acts a buffer for logic compatibility and the coupling network connects the two together. The input pins are connected to the external circuitry through the TTL oscillator which then interfaces with the quartz crystal oscillator. When the different crystal frequencies are applied to the appropriate input pins, the oscillator output frequency will be changed accordingly and produce the desired frequency.

Conclusion

The 554AH000322DGR is an example of a pin configurable/selectable oscillator that can be used to modify its frequency, pull range and power consumption characteristics. Its excellent accuracy and stability, wide frequency selection range, superior temperature stability and low power consumption make it an ideal choice for a wide range of applications including transceivers and cellular base stations, fiber optics transceivers, modems, broadcast systems, time and frequency reference systems, high-speed computer system bus, and communications systems. Its working principle is based on the combination of the TTL oscillator and quartz crystal, which serves to select the desired frequency for the output of the oscillator.

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