Digital-to-analog Converter: description, aiki ka'idoji, aikace-aikace.

Analog sakonni ana halin da yawan fasaha sigogi, daya daga wanda ke da oscillation mita. Alal misali, mutum kunne iya ji da sakonni da ciwon mita a cikin kewayon daga 1 zuwa 22 kHz, da bayyane haske qunshi wani mita auna a biliyoyin hertz. Wani misali na wani analogue sigina na iya zama rikodin gramophone rikodin. Photos, baki da fari a farko, sa'an nan, da kuma launi - shi ne ma wani misali na wani analog sigina rikodi.

Digital-to-analog Converter ne kusan ko da yaushe dole bayan da analog-to-dijital Converter (Dogarin), wanda ke da amfani ga ce 'yan kalmomi, cewa akwai wata bayyana matsalar da aka warware ta na'urar karkashin shawara da mu.

Dogarin sabobin tuba cikin analog sigina zuwa dijital. Yawancin lokaci da yawan wanda yayi dace da siginar darajar a lokacin da ji, suna binary code. Kowane ji an yi tare da wasu mita, da ake kira daukan samfur rate.

da ƙaramar daukan samfur rate ne a rubuce substantiated cewa samar da undistorted siginar dawo. Wannan alama yana da wani murdiya da kuma mayar da fitarwa na dijital zuwa akwatin tilbijin na analog sigina Converter. quantizing mita kamata a kalla biyu iyakar mita tuba alama. Alal misali, ga canji na undistorted sauti siginar isasshe quantization mita daidaita 44 kHz.

Yanzu a sarari yake cewa da dijital-to-analog Converter ne a shigar da jerin binary lambobin, wanda ya kamata a tuba a cikin wani daidai analog sigina.

Aiki AMINCI da sabis rayuwa ana kuma hada a Figures, amma wadannan sigogi ba ya dogara ne a kan aiki manufa na Dac, amma daga gyara da kuma gina quality. Ko da canji manufa DACs suna bambanta da halaye kamar tsauri range, da hira daidaici da kuma lokaci sigogi.

A tsauri kewayon aka ƙaddara ga Dac shigar da fitarwa, a matsayin rabo na matsakaicin darajar da shigar da (fitarwa) ga m shigar da (fitarwa) darajar.

Daya daga cikin lokaci sigogi ne kishiya na daukan samfur mita, lokacin ya kira quantization. An fahimci cewa wannan darajar ƙayyade Dogarin, via wanda da alama an tuba zuwa Dac.

Ainihin yawa characterizing gudun da Dac ne hira lokaci. A nan muna da zabi tsakanin kara hira - DACs mafi m, amma kasa da ta gudu, da kuma mataimakin versa.

Ka yi la'akari da wasu dokoki na mayar "dijital-to-analog", ba tare da bada dabarbari da makircinsu. Akwai biyu hira manufa - serial kuma a layi daya.

A jerin dijital lambobin a shigar da dijital-to-analog Converter sabobin tuba a jerin rectangular hatsaisai a fitarwa. A bugun jini fadi da tazara m ga shi kafin na gaba bugun jini ne niyya dangane da shigowa binary code. Saboda haka, fitarwa low-izinin tace an samu wani analog sigina ta hatsaisai isa a wani labari da wani m lokaci.

Layi daya hira da aka yi, misali, via resistors alaka a layi daya zuwa barga samar da wutar lantarki. Yawan resistors ne daidaita da bit shigar da shigar da code. A juriya darajar a mafi muhimmanci lambobi ne sau 2 kasa da a baya LSB. A kowane juriya kewaye yana da wani key. Samun code iko da key - inda 1, yanzu gudana. Saboda haka, a halin yanzu kewaye za a ƙaddara da nauyin da sallama, da kuma dijital-to-analog Converter fitarwa yana da wani net halin yanzu wanda zai dace da binary code rubuta.