现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
16期
148-151
,共4页
低频率%电荷泵锁相环%电荷泵%压控振荡器
低頻率%電荷泵鎖相環%電荷泵%壓控振盪器
저빈솔%전하빙쇄상배%전하빙%압공진탕기
low frequency PLL%charge pump PLL%charge pump%VCO
设计一款音频范围内的电荷泵锁相环，采用动态D触发器鉴频鉴相器及电流舵差分输入电荷泵。压控振荡器采用了对电容充放电的形式产生震荡波形，实现低频输出。采用HHNEC BCD035工艺并用Cadence软件实现仿真，实现250 kHz频率锁定，锁定时间为80μs，锁定时相位差为75 ns且压控振荡器控制电压纹波为5 mV。
設計一款音頻範圍內的電荷泵鎖相環，採用動態D觸髮器鑒頻鑒相器及電流舵差分輸入電荷泵。壓控振盪器採用瞭對電容充放電的形式產生震盪波形，實現低頻輸齣。採用HHNEC BCD035工藝併用Cadence軟件實現倣真，實現250 kHz頻率鎖定，鎖定時間為80μs，鎖定時相位差為75 ns且壓控振盪器控製電壓紋波為5 mV。
설계일관음빈범위내적전하빙쇄상배，채용동태D촉발기감빈감상기급전류타차분수입전하빙。압공진탕기채용료대전용충방전적형식산생진탕파형，실현저빈수출。채용HHNEC BCD035공예병용Cadence연건실현방진，실현250 kHz빈솔쇄정，쇄정시간위80μs，쇄정시상위차위75 ns차압공진탕기공제전압문파위5 mV。
A charge pump PLL working in audio frequency was designed,in which a TSPC-PFD and a current steering charge pump were used. In order to get the low frequency,a VCO that get the output wave by charging or discharging the capaci-ty is used. The circuit is designed with HHNEC BCD035 process and the behavior is simulated with Cadence. The locking fre-quency of 250 kHz was achieved. Its locking time is 80 μs. when it is locked,the phase difference is 75 ns,and the ripple of the VCO control voltage is 5 mV.
