제어로봇시스템학회:학술대회논문집
- 2003.10a
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- Pages.1885-1890
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- 2003
Development of the VCXO with the PECL
- Hong, Seung-Jin (Dept. of Electronic Engineering, Semyung University) ;
- Lee, Jae-Kyung (Dept. of Electronic Engineering, Semyung University) ;
-
Yoon, Dal-Hwan
(Dept. of Electronic Engineering, Semyung University)
;
- Min, Seung-Gi (Human Meditek Co., Ltd.)
- Published : 2003.10.22
Abstract
In this paper, we have developed the voltage controlled crystal oscillator (VCXO) with positive emitter coupled logic(PECL). The VCXO is a crystal oscillator which includes a varactor diode and associated circuitry allowing the frequency to be changed by application of a voltage across that diode. The characteristics of the PECL has the delay time less than 2 ns and the faster logic gate, and the high level output greater than 2.3 V and the low level output smaller than 1.68 V.