SVC270-TL-E

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The SVC270-TL-E is an example of a Variable Capacitance or Varicap or Varactor diode. Varicaps are used to implement frequency tuning and phase shifting circuits, voltage controlled oscillators, phase locked loops, as well as for non-linear voltage-current transfer function applications. This type of diode has a reverse-biased diode junction is used to store charge, which can then be extracted for use elsewhere.The SVC270-TL-E has a voltage limit of 170V, reverse current of 1.2 μA and a Junction Capacitance ranging from 7 to 11pF. It is a high power and low leakage varicap, hence it is well suited for applications requiring a high frequency tuning sensitivity.

Working Principle of the SVC270-TL-EThe working of the SVC270-TL-E is based on the principle of the Variable Capacitance or Varicap or Varactor Diode. It is a two-terminal semiconductor device, wherein a reverse-biased diode junction is used to store charge. A reverse voltage is applied to the junction thus creating a depletion region dropping the voltage present across the junction. This depletion region or space-charge region, which decreases or increases depending on the applied voltage, is able to store charge. Although the stored charge within the junction ranges in value, it affects the junction\'s capacitance, thus allowing the device to have an adjustable capacitance.

Application Field of the SVC270-TL-EThe SVC270-TL-E has a wide range of uses, due to its adjustable capacitance which allows it to be used in frequency tuning and phase shifting circuits, voltage controlled oscillators, phase locked loops and many more. Some of the most common applications of the SVC270-TL-E are:

Radio Frequency Resonator- The SVC270-TL-E is used in the radio frequency resonator. It is designed as a VCO (voltage-controlled oscillator) with a frequency tuning range of 5-15 MHz to operate at the RF range. This can be used for radio transmission and reception.

L-Band Phase Change Detector- The SVC270-TL-E can be used to form an L-band phase change detector to detect changes in the input signal\'s phase. This application is used for the military use for the detection of an incoming signal and the tracking of its phase.

Network Signal Processor- The SVC270-TL-E can be used to implement and control filter networks, using the bandwidth control and DAC switching options. This allows the filtered signals to be applied to the inputs, while the networks are adjusted to match specific filter shapes such as FIR and IIR, allowing signals to be processed in the frequency domain.

Voltage Controlled Filter- This application uses the SVC270-TL-E to implement a voltage controlled filter, allowing the voltage to be varied to change the cut-off frequency of the filter. This application is used in the audio industry, for example in audio volume control.

Switch Load Line Equalizer- This application uses the SVC270-TL-E to implement a switch load line equalizer. This is used in switching load lines to maintain the correct operating point as the output voltage of the switch is varied. This type of equalizer is useful in high-voltage switching applications where the output voltage needs to remain equal with changing input voltages.

The SVC270-TL-E is a versatile, high power and low leakage varicap diode, with a voltage limit of 170V, reverse current of 1.2 μA and a Junction Capacitance ranging from 7 to 11pF. Its wide variety of applications, such as radio frequency resonator, L-band phase change detector, voltage controlled filter, network signal processor and switch load line equalizer make it a highly desired device. It is well suited for applications requiring a high frequency tuning sensitivity.

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