552BD000972DG

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Pin Configurable/Selectable Oscillators, such as the 552BD000972DG, are designed to enable customers to easily configure or select a wide range of oscillator frequencies. These oscillators are advantageous for applications that require flexibility in the selection of the frequency or in the selection of the output. They are commonly used in frequency control, clocking, and timing control applications such as microprocessors, data converters, modems, ASICs, and PLLs.

The 552BD000972DG is a pin-configurable oscillator which uses a 22.3MHz ceramic resonator and a numerical-based frequency control configuration. The frequency output is controlled by changing the logic level inputs to select the frequency output. The device provides a frequency range of 22.3MHz to 155MHz and operates at a tolerance of ±50 ppm (over the full temperature range).

The oscillator consists of two major sections: the frequency control block and the oscillation block. The frequency control block consists of three 8-bit CMOS shift registers and an 8-bit latch which are used to store the numerical-based frequency control codes. This block is responsible for selecting the frequency output of the oscillator. The oscillation block consists of a voltage-controlled oscillator (VCO) and an analog loop filter. The output of the oscillator is determined by the frequency control codes stored in the shift registers. The loop filter, which is used to stabilize the oscillation frequency, consists of an RC network connected to the VCO.

The 552BD000972DG is a very cost effective, pin-configurable oscillator which allows users to select from a wide range of frequencies without the need for any external components or circuitry. In addition, the device features low phase noise, low jitter, and excellent power supply noise rejection. The device is well suited for high performance timing solutions in a variety of applications such as microprocessors, data converters, modems, ASICs, PLLs, and frequency control.

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