256 Frequency Divider, Input Frequency 0.3~30GHz

A 256 frequency divider idhijitari yedunhu module iyo inoderedza frequency yechiratidzo chekuisa kusvika 1/256 yenguva yayo yekutanga. Hunhu hwayo uye mashandisirwo ayo ndeaya anotevera:

Hunhu:
1. Yakakura frequency division coefficient
Iyo frequency division reshiyo ndeye 256: 1, inokodzera zviitiko zvinoda kuderedzwa kwema frequency, senge kugadzira yakaderera-frequency control masaini kubva kumusoro-frequency wachi.
2. Multi level trigger structure
Kazhinji inoumbwa ne8-level binary counters (se8-bit zviverengero), se2 ^ 8=256, akawanda mafiripi maflops anoda kukandwa, izvo zvinogona kuunza kunonoka.
3. Output duty cycle
Basa rekutenderera kweiyo yepamusoro bhiti kubuda kweiyo nyore bhinari counter i50%, asi yepakati nhanho inogona kunge isina asymmetric. Kana kutenderera kwakazara 50% yebasa kutenderera ichidikanwa, yekuwedzera logic kugadzirisa (senge mhinduro kana frequency ketani musanganiswa) inodiwa.
4. Kugadzikana kwepamusoro
Zvichienderana nedhijitari yedunhu dhizaini, ine yakakwira kubuda frequency kurongeka, haina kukanganiswa nemamiriro ekunze senge tembiricha uye voltage, uye inovimba nekudzika kwechiratidzo chekuisa.
5. Kuderera kwesimba rekushandisa uye kubatanidzwa
Tekinoroji yemazuva ano yeCMOS ine simba rakaderera rekushandisa, iri nyore kubatanidza muFPGA, ASIC kana microcontroller, uye inogara zvishoma zviwanikwa.

Application:
1. Hurongwa hwekukurukurirana
Frequency synthesis: Muchikamu-chakavharwa loop (PLL), iyo inotarirwa frequency inogadzirwa pamwe chete nevoltage controlled oscillator (VCO); Local oscillator (LO) frequency division muRF application inogadzira akawanda-channel frequency.
2. Digital chiratidzo chekugadzirisa
Downsampling: Deredza sampling rate kudzikisa huwandu hwe data, inoshandiswa pamwe chete ne anti aliasing kusefa.
3. Zvishandiso zvenguva uye nguva
Mumawachi edhijitari uye nguva dzemagetsi, iyo crystal oscillator (yakadai se32.768kHz) yakakamurwa kuita 1Hz kutyaira ruoko rwechipiri.
Kunonoka kukonzeresa kana periodic basa kuronga mukutonga kwemaindasitiri.
4. Midziyo yekuyera uye yekuyera
Iyo jenareta yechiratidzo inogadzira yakaderera-frequency test masaini kana inoshanda sereferensi frequency divider module ye frequency mita.