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Video Resources

Oscillator Transconductance

In episode six of our Oscillator Design Principles multipart series, David Meaney will discuss oscillator transconductance, resonance modes, and design considerations. Transconductance is vital in understanding if an oscillator will start consistently. There are a variety of metrics that should be reviewed to judge oscillator transconductance. The crystal frequency is limited by the physical dimensions of the unit – length, width, and AT cut. Overtone frequencies require the crystal to operate at the desired frequency and overtone. Crystals designed to operate at their fundamental frequencies should never be used at an overtone frequency. David covers two ways to suppress the fundamental frequency and modify the oscillator circuit. When you are designing your board, there are a variety of design considerations that should be taken under advisement.

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