Lateral high - voltage power device ldmos has advantages of high - voltage , large gain , wide dynamic range , low distortion and compatibility with low - voltage circuit process 橫向高壓功率器件ldmos有耐高壓、增益大、動(dòng)態(tài)范圍寬、失真低和易于和低壓電路工藝兼容等特點(diǎn)。
Telephone circuit produce dtmf signal , receive ring signal and perform speech function . dtmf receiver lets it becomes binary code for mcu to read . analog circuit process speech signals between phone and gsm modem 固話電路提供產(chǎn)生的雙音多頻信號(hào)及振鈴和通話功能,雙音多頻收號(hào)電路將dtmf信號(hào)變成二進(jìn)制碼,便于mcu的識(shí)別和處理。
It ought to be compatible with low - voltage circuit process and satisfy requirement of high - voltage and large current this paper deeply discusses threshold voltage , on - resistance and current characteristic of ldmos , and builds the approximately accurate model of these electrical parameters 本文討論的ldmos結(jié)構(gòu)是pdp選址驅(qū)動(dòng)芯片設(shè)計(jì)的一個(gè)關(guān)鍵問(wèn)題,該結(jié)構(gòu)實(shí)現(xiàn)了與低壓電路工藝的兼容,并滿足耐壓高、電流大的實(shí)際需要。