256 Frequency Divider, Kupinda Frequency 0.3 ~ 30GHz

Chinoparadzanisa mafrequency e256 imodule yedhijitari inoderedza mafrequency echiratidzo chekupinda kusvika pa1/256 yefrequency yayo yekutanga. Hunhu hwayo nemashandisirwo ayo ndeaya anotevera:

Hunhu:
1. Kuwanda kwekupatsanurwa kwema frequency
Chiyero chekupatsanurana kwema frequency i256:1, chakakodzera mamiriro ezvinhu anoda kudzikiswa kukuru kwema frequency, akadai sekugadzira masaini ekudzora ma frequency akaderera kubva kumawachi ane ma frequency akakwira.
2. Chimiro chetrigger chine mazinga akawanda
Kazhinji inoumbwa ne 8-level binary counters (senge 8-bit counters), se 2 ^ 8=256, ma flip flops akawanda anofanira kutorwa, izvo zvinogona kukonzera cascading delay.
3. Kutenderera kwebasa rekuburitsa
Duty cycle ye highest bit output ye simple binary counter i50%, asi pakati pedanho rinogona kunge risingaenzaniswi. Kana 50% duty cycle yakazara ichidikanwa, mamwe ma logic processing (akadai se feedback kana frequency chain combination) anodiwa.
4. Kugadzikana kwakanyanya
Zvichibva pakugadzirwa kwemasekete edhijitari, ine kurongeka kwakanyanya kwekubuda kwemafrequency, hainyanyi kukanganiswa nezvinhu zvakaita sekupisa uye voltage, uye inovimba nekugadzikana kwemasaini ekupinda.
5. Kushandiswa kwesimba shoma uye kubatanidzwa
Tekinoroji yemazuva ano yeCMOS inoshandisa simba shoma, iri nyore kubatanidza muFPGA, ASIC kana microcontroller, uye inoshandisa zviwanikwa zvishoma.

Kushandiswa:
1. Sisitimu yekutaurirana
Kugadzirwa kwefrequency: Muchikamu che "phase-locked loop" (PLL), "target frequency" inogadzirwa pamwe chete ne "voltage controlled oscillator" (VCO); "local oscillator" (LO) frequency division" muRF applications inogadzira ma "multi-channel frequency".
2. Kugadziriswa kwechiratidzo chedhijitari
Kuderedza sampuli: Deredza huwandu hwesampuli kuti uderedze huwandu hwedata, hunoshandiswa pamwe chete ne anti aliasing filtering.
3. Zvishandiso zvenguva nenguva
Mumawachi edhijitari uye matimers emagetsi, oscillator yekristaro (yakadai se32.768kHz) inokamurwa kuita 1Hz kuti ifambise ruoko rwechipiri.
Kunonoka kunotanga kana kuronga mabasa nguva nenguva mukutonga kweindasitiri.
4. Zvishandiso zvekuyedza nekuyera
Jenareta yechiratidzo inogadzira zviratidzo zvekuyedza zvine frequency yakaderera kana kuti inoshanda semodule yekuparadzanisa frequency yemita yefrequency.