Quartz crystal sine wave oscillator circuit

Published:2011/8/7 1:42:00 Author:nelly | Keyword: Quartz crystal, sine wave, oscillator | From:SeekIC

The picture shows the sine wave oscillator which is composed of the quartz crystal SJT and the gate A of the hex inverter IC CD4069．Compared with the ordinary RC phase-shift oscillator, the stability of crystal oscillator’s frequency can reach 10-5 or higher. This high index (The stability of the RC phase-shift oscillator’s frequency only can reach 10-2) can not be reached by the RC phase-shift oscillator. CMOS NAND gate and the negative feedback bias resistor R1 form the inverting amplifier circuit. Quartz crystal SJT, C1 and C1 form the 7c type positive feedback branch.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Quartz_crystal_sine_wave_oscillator_circuit.html

Print this Page | Comments | Reading(3)