552CD000700DGR

Pin Configurable/Selectable Oscillators

The 552CD000700DGR is one of the many pin configurable, selectable oscillators on the market today. These types of oscillators offer flexibility in the way they are used and are a great option for applications in many different industries.

The 552CD000700DGR is a voltage-controlled crystal oscillator (VCXO) designed to operate over a frequency range of 7 to 140MHz and at voltages ranging from 3.3V to 5V. It has a current of 10mA and a noise figure of -120dBc/ Hz.

The oscillator requires two input signals to determine its operating frequency; an external voltage of 0.1Vpp to 4Vpp applied to its control pin, and a digital select signal, GND or VCC, set to the control pin. It can be configured using a wide variety of external digital signals and voltages, offering the user incredible flexibility.

This device also features a standby pin to enter a low power mode when not in use. The VCXO can enter a low power state by raising the standby pin to VCC, reducing current to 15µA, which the data sheet states is suitable for battery powered applications.

The 552CD000700DGR is great for applications that require frequency agility and where board space is an issue. Its main applications include femtocell systems, cellular base stations, cognitive radios, and any application requiring frequency agility.

In order to understand how the 552CD000700DGR works, it’s important to first understand the basics of oscillators. Oscillators are electronic components that produce an oscillating electronic signal. These signals are used in many applications, from controlling the speed of a motor to generating low frequency signals for circuitry. The most common type of oscillator uses an inductor and capacitor to create a frequency, but the 552CD000700DGR uses a crystal as an oscillator, which provides higher stability.

The crystal creates an electromechanical resonance when an electric field is applied to it. The input voltage (VIN) is then amplified until it reaches a certain frequency, which causes the crystal to vibrate. This vibrating frequency is then output from the oscillator.

The 552CD000700DGR also features a pin-configurable frequency range, which allows the user to customize the frequency range of the oscillator to their application’s needs. By changing the input voltage applied to the control pin, the frequency range can be adjusted between 7MHz and 140MHz

Finally, the device also features a temperature compensation function to further reduce phase noise and improve frequency stability. This is done by subtracting the temperature coefficient (TC) of the crystal from the device’s total temperature coefficient and then compensating for the difference. This feature is particularly useful for RF applications that need extremely stable frequency.

The 552CD000700DGR is a great option for applications that require flexibility and frequency agility. Its pin-configurable range and temperature compensation function provide a high degree of customization, making it a great choice for many different applications.