Home › Magazines › 2009 › July/August › Micropower Crystal Oscillator

Micropower Crystal Oscillator

Published in issue 391, July/August 2009

Crystal oscillators for digital circuits are normally built as Pierce oscillators with an inverter. The inverter operates as a linear amplifier and thus requires extra current. But you can also build a crystal oscillator using an operational amplifier (op-amp for short)! If a very low frequency is involved, for instance 32.768 kHz (commonly used for clocks), you can get away with a comparatively ‘slow’ micro power op-amp.

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Magazine July/August 2009
UK391 (US $ 11.30)
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