256 Mai Rarraba Mita, Mitar shigarwa 0.3 ~ 30GHz

Mai rarraba mitar 256 shine tsarin da'ira na dijital wanda ke rage mitar siginar shigarwa zuwa 1/256 na mitar ta na asali. Halayensa da aikace-aikacensa sune kamar haka:

Halaye:
1. Large mita rabo coefficient
Matsakaicin rabon mitar shine 256: 1, wanda ya dace da yanayin yanayin da ke buƙatar raguwa mai mahimmanci, kamar samar da siginonin sarrafa ƙananan mitoci daga manyan agogo.
2. Multi matakin jawo tsarin
Yawanci an haɗa da ƙididdiga masu lamba 8 (kamar masu ƙidayar 8-bit), kamar 2 ^ 8 = 256, flops da yawa suna buƙatar cakuɗe, wanda zai iya gabatar da jinkirin cascading.
3. Zagayowar aikin fitarwa
Zagayowar aiki na mafi girman fitarwa na ma'aunin binary mai sauƙi shine 50%, amma matakin tsakiya yana iya zama asymmetric. Idan ana buƙatar cikakken sake zagayowar kashi 50% na aikin, ana buƙatar ƙarin sarrafa dabaru (kamar martani ko haɗin sarkar mitar) ana buƙatar.
4. Babban kwanciyar hankali
Dangane da ƙirar da'irar dijital, tana da daidaiton mitar fitarwa mai girma, abubuwan muhalli kamar zafin jiki da ƙarfin lantarki ba shi da tasiri, kuma yana dogara da kwanciyar hankali na siginar shigarwa.
5. Ƙananan amfani da wutar lantarki da haɗin kai
Fasahar CMOS ta zamani tana da ƙarancin amfani da wutar lantarki, yana da sauƙin haɗawa cikin FPGA, ASIC ko microcontroller, kuma yana ɗaukar ƙasa da albarkatu.

Aikace-aikace:
1. Tsarin sadarwa
Mitar kira: A cikin madauki mai kulle lokaci (PLL), ana samar da mitar manufa tare da haɗin gwiwar oscillator mai sarrafa wutar lantarki (VCO); Rarraba oscillator na gida (LO) a cikin aikace-aikacen RF yana haifar da tashoshi masu yawa.
2. Tsarin siginar dijital
Sauƙaƙewa: Rage ƙimar ƙima don rage adadin bayanai, ana amfani da su tare da tacewa ta anti aliasing.
3. Lokaci da na'urorin lokaci
A cikin agogon dijital da na'urorin lantarki, ana rarraba oscillator crystal (kamar 32.768kHz) zuwa 1Hz don fitar da hannu na biyu.
Jinkirta jawowa ko tsara jadawalin ayyuka na lokaci-lokaci a cikin sarrafa masana'antu.
4. Gwaji da kayan aunawa
Mai samar da siginar yana haifar da ƙananan siginonin gwaji ko kuma yana aiki azaman ƙirar mitar mai rarrabawa don mitar mitar.