Designed to control the frequency of crystal oscillator circuits, the 3022 series of high-ratio, hyperabrupt varactor tuning diodes is designed to deliver a dc bias control voltage from -0.3V to -4V.

This file type includes high-resolution graphics and schematics when applicable. 1. Bob Pease built this varactor-input op-amp out of discrete components, based on an old design of Jim Williams. A ...

Telecommunication, satellite links and set-top boxes all require tuning a high frequency oscillator. The actual tuning element is a varactor diode, a 2-terminal device that changes capacitance as a ...

A typical voltage-to-frequencyconverter—also known as aVCO (voltage-controlled oscillator)—IC has a simple linear tuning characteristicrelating input voltage to outputfrequency. It is usually of the ...