溫補晶振應用

由(you)于TCXO具(ju)有(you)較高(gao)的頻(pin)率穩定(ding)度，而(er)且(qie)體積小(xiao)，在小(xiao)電流(liu)下能夠快速啟動，其應用領域重點擴展到移動通信(xin)系統。如智能手機(ji)、GPS、導航、無線通訊模塊、機(ji)站等(deng)。

北京晶(jing)宇(yu)興科技的溫補(bu)晶(jing)振產(chan)品性能穩(wen)定、精(jing)度高等(deng)也(ye)廣泛應用到一些移動通訊產(chan)品領域、較適(shi)合(he)于GPS，導航、以及通訊系統(tong)，溫補(bu)晶(jing)振原廠(chang)，智(zhi)能電話等(deng)多種行業。

溫補振蕩器適用范圍

溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器低(di)溫(wen)(wen)(wen)范(fan)圍的(de)(de)實(shi)(shi)現方法(fa)及裝置，所述方法(fa)包括采用(yong)溫(wen)(wen)(wen)度(du)(du)(du)(du)傳感器檢測(ce)所述溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器的(de)(de)溫(wen)(wen)(wen)度(du)(du)(du)(du)并(bing)根(gen)據(ju)所述溫(wen)(wen)(wen)度(du)(du)(du)(du)調(diao)節發(fa)熱件發(fa)熱實(shi)(shi)現擴(kuo)展所述溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器工作的(de)(de)低(di)溫(wen)(wen)(wen)范(fan)圍，同(tong)時實(shi)(shi)施(shi)(shi)保(bao)溫(wen)(wen)(wen)措施(shi)(shi).本發(fa)明(ming)通(tong)過使用(yong)溫(wen)(wen)(wen)度(du)(du)(du)(du)傳感器采集溫(wen)(wen)(wen)度(du)(du)(du)(du)根(gen)據(ju)溫(wen)(wen)(wen)度(du)(du)(du)(du)調(diao)節發(fa)熱件局部加熱實(shi)(shi)現對溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器的(de)(de)工作環境溫(wen)(wen)(wen)度(du)(du)(du)(du)擴(kuo)展，并(bing)采取保(bao)溫(wen)(wen)(wen)措施(shi)(shi)，在(zai)﹣55℃~40℃環境溫(wen)(wen)(wen)度(du)(du)(du)(du)下，使溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器的(de)(de)局部溫(wen)(wen)(wen)度(du)(du)(du)(du)仍然能(neng)(neng)保(bao)持40℃以上，克(ke)服了(le)普通(tong)溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器低(di)于40℃時性(xing)能(neng)(neng)指標(biao)急劇惡(e)化的(de)(de)缺點，溫(wen)(wen)(wen)補晶(jing)(jing)振(zhen)，保(bao)證(zheng)了(le)﹣55℃~40℃環境溫(wen)(wen)(wen)度(du)(du)(du)(du)下溫(wen)(wen)(wen)度(du)(du)(du)(du)補償(chang)(chang)(chang)晶(jing)(jing)體(ti)(ti)(ti)(ti)振(zhen)蕩(dang)器的(de)(de)性(xing)能(neng)(neng)指標(biao)，同(tong)時具(ju)有功耗低(di)，體(ti)(ti)(ti)(ti)積小，成本低(di)，穩定(ding)性(xing)好等特(te)點.

溫補振蕩器工作的原(yuan)理(li)

首先(xian)了(le)(le)解晶體(ti)(ti)的(de)(de)數(shu)學模型，用(yong)負阻(zu)的(de)(de)方法分(fen)析了(le)(le)石(shi)英晶體(ti)(ti)振(zhen)(zhen)蕩器(qi)的(de)(de)起振(zhen)(zhen)原(yuan)理以(yi)及補(bu)償方法，設(she)(she)計(ji)了(le)(le)數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)容陣列可(ke)調頻率晶體(ti)(ti)振(zhen)(zhen)蕩電(dian)(dian)(dian)(dian)(dian)路，溫(wen)補(bu)晶振(zhen)(zhen)生(sheng)產(chan)廠家，實現了(le)(le)頻率簡單(dan)可(ke)控.帶(dai)隙測(ce)溫(wen)電(dian)(dian)(dian)(dian)(dian)路采用(yong)了(le)(le)LDO供電(dian)(dian)(dian)(dian)(dian)和(he)cascode結構，實現了(le)(le)輸出(chu)溫(wen)度電(dian)(dian)(dian)(dian)(dian)壓具有高抑制比和(he)準確性(xing).模數(shu)轉換器(qi)ADC采用(yong)了(le)(le)12位逐次逼近(jin)型電(dian)(dian)(dian)(dian)(dian)路，結構簡單(dan)精度適中.LDO為測(ce)溫(wen)電(dian)(dian)(dian)(dian)(dian)路提供了(le)(le)穩定的(de)(de)工作電(dian)(dian)(dian)(dian)(dian)源保(bao)證(zheng)了(le)(le)輸出(chu)信號的(de)(de)穩定，溫(wen)補(bu)晶振(zhen)(zhen)價格，通(tong)過間斷(duan)性(xing)地工作實現整個(ge)系統的(de)(de)低功耗. 隨著CMOS技術的(de)(de)發展，上述的(de)(de)各種(zhong)電(dian)(dian)(dian)(dian)(dian)路都(dou)可(ke)以(yi)集成在一塊芯片里面.本(ben)文基于集成電(dian)(dian)(dian)(dian)(dian)路設(she)(she)計(ji)工具Cadence的(de)(de)軟件環境，和(he)SMIC的(de)(de)0.35um工藝，設(she)(she)計(ji)了(le)(le)以(yi)上電(dian)(dian)(dian)(dian)(dian)路，并得到了(le)(le)結果(guo)，驗(yan)證(zheng)了(le)(le)本(ben)設(she)(she)計(ji)的(de)(de)可(ke)行性(xing).