CVCO55CC-0430-0480

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Voltage Controlled Oscillators (VCOs ) play a critical role in controlling frequency in a wide variety of communication appliances. Whereas the oscillating signals used in many industrial systems are simple and do not require voltage control, the reliability and accuracy of modern communication equipment demands that the frequency of its oscillations must be controlled by an adjustable voltage level. The CVCO55CC-0430-0480 is a VCO specifically designed for communication applications.

Application Field

The CVCO55CC-0430-0480 is a voltage-controlled oscillator that operates between a frequency range of 430MHz and 480MHz varying in temperature between -40°C and +85°C. The device is designed to suit applications used in Wi-Fi (Wireless fidelity), CDMA, WCDMA, TDMA and GSM.

Wireless fidelity (Wi-Fi) is a technology used for connecting computers and other devices to the internet wirelessly over a distance. Wi-Fi networks are used in homes, offices, public places such as libraries, hotels, airports and congested areas with large data traffic. The CVCO55CC-0430-0480 is designed to enable robust transmissions in crowded Wi-Fi networks.

The device is most commonly used in CDMA and WCDMA technologies. CDMA stands for ‘code division multiple access’ and is a mobile communication standard which uses frequency-hopping technology and spread spectrum waves to transmit data to mobile devices. WCDMA (Wideband Code Division Multiple Access) is an upgraded version of CDMA technology. It offers higher speed and more secure connections, making it ideal for digital radio, internet and multimedia applications.

The technology is also used in TDMA (Time Division Multiple Access) and GSM (Global System for Mobile Communications) systems. TDMA is a wireless communication technology which enables multiple users share one frequency channel by dividing the signal into several time slots. GSM is a digital mobile network that offers services such as calling and short messaging service (SMS).

Working Principle

The CVCO55CC-0430-0480 works by controlling the phase and frequency of the oscillating signal via an externally applied voltage. The actual frequency of the signal is determined by the applied voltage and the temperature of the environment.

The device consists of an oscillator core which includes an active element and an input voltage divider. The active element is a transistor which is controlled by the external voltage and the signal feedback from the oscillator core. The external voltage is applied to the active element and the signal feedback is then taken from the output.

The amount of voltage applied to the active element controls the frequency at which the oscillator operates. The external voltage level is divided by the resistor network and is then applied to the active element. This causes the transistor to switch on and off, thus creating an oscillating signal.

The oscillator core is designed so that the frequency of the oscillating signal has a linear relationship with the voltage applied to the active element. This means that for a given voltage up to the peak voltage rating, the frequency of the signal will change in a linear fashion. At higher voltages, the frequency of the signal will eventually reach its maximum value.

The CVCO55CC-0430-0480 also makes use of a temperature compensating circuit which adjusts the operating temperature of the device. This ensures that the frequency of the signal remains constant over a wide temperature range.

Conclusion

The CVCO55CC-0430-0480 is a voltage-controlled oscillator specifically designed for communication applications. It is used in technologies such as Wi-Fi, CDMA, WCDMA, TDMA and GSM, where accurate frequency control is essential. The device consists of an oscillator core, an active element and an input voltage divider. It is designed to operate within a frequency range of 430-480MHz across temperatures of -40°C to +85°C. The oscillator core has a linear relationship between the frequency of the oscillating signal and the voltage applied to the active element. Temperature-compensating circuitry is also included to ensure that the frequency remains constant regardless of the environment.

The specific data is subject to PDF, and the above content is for reference