標題: 一種CMOS鋸齒波振蕩電路的設計[簡] [打印本頁] 作者: sjhor 時間: 2007-5-19 05:20 PM 標題: 一種CMOS鋸齒波振蕩電路的設計[簡] Design of a CMOS Sawtooth-Wave Oscillator Circuit 8 N# n3 |& X x3 R3 v) J3 cMA Tian-hua , J IANGGuo-ping ,WANG Li; E# {& k- F, H/ `
(School of Electronic Engineer ing , Dalian University of Technology ,Dalian Liaoning 1 1 60 2 3 , China) 2 `. t" ?% ]7 L' {" h9 Z( o' ^Abstract :A Sawtooth - Wave Oscillator Circuit based on 1 .2 μm CMOS technology is designed .On: b1 P* \! [/ c8 C& s. c
being designed ,comparator is regarded as a key circuit ,meanwhile , the method of constant current + }7 E6 s; y; c* D; T* P! _2 Nsource charging and discharging is used . Of course , the design of each component circuit is also explained ) F$ y6 T1 K4 o3 h.The oscillator circuit is emulated by using the tool of Cadence SpectreS .It shows that the oscillating ! f; g$ J. L+ P8 K3 D; ^" afrequency has a good characteristic of linearity .When the power voltage is 5 .0 V or so, the* L4 G4 A6 Q* s3 ]3 B
frequency is stable ,so does it from 27℃ to 55℃ .Because of the better performances with the change* t0 r8 f- O( o B8 g. o0 e
of appropriate supply voltage and temperature , this Oscillator Circuit can be widely used in many# Q/ x3 U/ V( k% z
kinds of electronic circuits .$ P- w' |% x* ?3 o0 E9 W) w
