256 Zaus Divider, Input zaus 0.3 ~ 30GHz

A 256 zaus divider yog digital circuit module uas txo qhov zaus ntawm lub teeb liab tawm mus rau 1/256 ntawm nws qhov qub zaus. Nws cov yam ntxwv thiab kev siv yog raws li nram no:

Yam ntxwv:
1. Loj zaus faib coefficient
Qhov sib faib zaus yog 256: 1, haum rau cov xwm txheej uas yuav tsum tau txo qis zaus, xws li tsim hluav taws xob tswj cov cim qis los ntawm cov moos siab.
2. Multi-level trigger qauv
Feem ntau yog tsim los ntawm 8-theem binary txee (xws li 8-ntsis txee), xws li 2 ^ 8 = 256, ntau lub flip flops yuav tsum tau cascaded, uas tej zaum yuav qhia cascading ncua.
3. Tso zis lub voj voog ua haujlwm
Lub voj voog lub luag haujlwm ntawm qhov tso zis ntau tshaj plaws ntawm qhov yooj yim binary txee yog 50%, tab sis nruab nrab theem yuav asymmetric. Yog tias lub voj voog puv 50% yuav tsum tau ua haujlwm, kev ua haujlwm ntxiv (xws li cov lus tawm tswv yim lossis kev sib txuas zaus sib txuas) yog xav tau.
4. Kev ruaj ntseg siab
Raws li kev tsim hluav taws xob digital, nws muaj qhov tso zis ntau zaus raug, tsis tshua cuam tshuam los ntawm ib puag ncig yam xws li kub thiab qhov hluav taws xob, thiab tso siab rau cov teeb liab input stability.
5. Kev siv hluav taws xob tsawg thiab kev sib koom ua ke
Niaj hnub nimno CMOS thev naus laus zis muaj kev siv hluav taws xob tsawg, yooj yim rau kev koom ua ke rau hauv FPGA, ASIC lossis microcontroller, thiab siv cov peev txheej tsawg.

Daim ntawv thov:
1. Kev sib txuas lus
Zaus synthesis: Nyob rau hauv ib lub voj-xauv (PLL), lub hom phiaj zaus yog generated ua ke nrog ib tug voltage tswj oscillator (VCO); Local oscillator (LO) zaus faib nyob rau hauv RF daim ntawv thov tsim muaj ntau zaus ntau zaus.
2. Digital teeb liab ua
Downsampling: Txo tus nqi piv txwv kom txo tau cov ntaub ntawv, siv ua ke nrog kev tiv thaiv aliasing filtering.
3. Sijhawm thiab sijhawm khoom siv
Hauv cov moos digital thiab cov khoom siv hluav taws xob, cov siv lead ua oscillator (xws li 32.768kHz) muab faib rau 1Hz los tsav ob txhais tes.
Ncua sijhawm ua haujlwm lossis sijhawm teem sijhawm ua haujlwm hauv kev tswj hwm kev lag luam.
4. Kev ntsuas thiab ntsuas ntsuas
Lub teeb liab lub tshuab hluav taws xob tsim hluav taws xob ntsuas qis qis lossis ua haujlwm raws li kev siv zaus faib module rau lub ntsuas zaus.