Dab tsi yog qhov txawv ntawm diodes hauv cov khoom siv kho mob thiab cov khoom siv hluav taws xob zoo tib yam?

1, Technical nta: Los ntawm cov haujlwm yooj yim mus rau siab -precision adaptation
Txawv kev xaiv ntawm cov ntaub ntawv thiab cov txheej txheem
Cov cuab yeej kho mob yuav tsum muaj kev ua tau zoo heev ntawm cov diodes, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej cuam tshuam nrog kev saib xyuas cov cim tseem ceeb, siab - kev ntsuas qhov tseeb, lossis kev phais me me. Piv txwv li:

Photodiodes: Hauv kev kho mob endoscopes, cov ntshav ntsuas ntshav, thiab lwm yam khoom siv, photodiodes yuav tsum muaj siab rhiab heev, tsis tshua muaj suab nrov, thiab ceev cov yam ntxwv. Siv tus lej PIN hom photodiodes ua piv txwv, lawv cov kev sib tshuam me me thiab qhov tsis muaj qhov tsaus ntuj tam sim no tuaj yeem ntes cov teeb liab tsis muaj zog thiab tsis txhob cuam tshuam cov teeb liab. Lub photodiodes nyob rau hauv cov khoom siv hluav taws xob zoo tib yam (xws li cov chaw taws teeb tswj) tsuas yog xav tau kom ua tau raws li lub teeb pom kev yooj yim, nrog rau cov kev xav tau qis dua rau lub suab nrov thiab cov lus teb ceev.
Zener diode: Hauv kev kho mob fais fab modules, Zener diodes yuav tsum tau tiv taus qhov hluav taws xob tsis zoo (xws li kev hloov pauv siab thaum lub sij hawm kev phais pib), thiab lawv cov dynamic tsis kam (Rz) yuav tsum tsawg dua 1 Ω los xyuas kom meej tias cov zis voltage ripple tsawg dua 0.1%. Nyob rau hauv sib piv, qhov dynamic tsis kam ntawm voltage regulator diode nyob rau hauv cov khoom siv hluav taws xob zoo tib yam (xws li chargers) feem ntau yog siab tshaj 10 Ω, uas tsuas yog yuav tsum tau ua kom tau raws li qhov yuav tsum tau ua ntawm cov kev cai voltage.
Tsim tshwj xeeb rau kev ntim khoom thiab cua sov dissipation
Cov cuab yeej kho mob feem ntau yuav tsum tau ua haujlwm rau lub sijhawm ntev hauv qhov chaw me me, thiab ntim cov diodes xav tau kom sib npaug ntawm cov khoom siv me me thiab cov cua sov kom zoo. Piv txwv li:

Cov ntim me me: Cov diodes siv rau hauv cov khoom siv kho mob cog tau (xws li pacemakers) yuav tsum tau ntim rau hauv ultra-thin DFN (ob npaug-sided ca tsis muaj pins) ntim nrog tuab ntawm 0.4 hli nkaus xwb los txo cov ntaub so ntswg stimulation.
Cov khoom siv thermal conductivity siab: Cov diodes hauv MRI (magnetic resonance imaging) cov cuab yeej yuav tsum tau siv cov txhuas nitride (AlN) ceramic substrates nrog thermal conductivity ntawm 170W / (m · K), uas tuaj yeem tshem tawm cov cua sov sai sai los ntawm qhov siab - zaus hloov thiab zam cov khoom siv tsis ua haujlwm.
2, Daim ntawv thov scenarios: Los ntawm kev ua haujlwm dav dav mus rau kev txhawb nqa lub neej
Cov cuab yeej tseem ceeb saib xyuas kev kos npe
Hauv electrocardiographs, oximeters, thiab lwm yam khoom siv, diodes yuav tsum tau ua cov cim tsis muaj zog bioelectric (μ V theem), thiab lawv cov tswv yim tsis zoo tam sim no yuav tsum tsawg dua 1pA kom tsis txhob cuam tshuam nrog cov teeb liab tau txais. Piv txwv li:

Lub diode nyob rau hauv JFET input ua hauj lwm amplifier yog siv los tiv thaiv lub input davhlau ya nyob twg amplifier los ntawm hluav taws xob zoo li qub los yog overvoltage puas. Nws qhov hluav taws xob thim rov qab yuav tsum tau tswj hwm qhov tseeb ntawm 5.6V, sib piv cov kev khiav hauj lwm voltage ntawm lub amplifier.
Ntes diode: Hauv cov cuab yeej kuaj mob ultrasound, lub ntsuas ntsuas diode yuav tsum hloov siab - zaus ultrasound signals (1-20MHz) mus rau qis- lub hnab ntawv zaus cov cim, thiab nws cov hlws ris capacitance yuav tsum tsawg dua 0.5pF kom txo tau qhov kev poob siab.
Cov khoom siv kho mob siab zog
Hauv cov xwm txheej xws li cov cuab yeej siv hluav taws xob kho hluav taws xob thiab cov riam phais laser, diodes yuav tsum tau tiv taus hluav taws xob siab thiab hluav taws xob siab. Piv txwv li:

Fast Recovery Diode (FRD): Nyob rau hauv lub pulse fais fab mov ntawm radiotherapy accelerators, lub sij hawm rov qab (Trr) ntawm FRD yuav tsum tsawg tshaj li 50ns los txo cov kev hloov pauv thiab txhim kho lub zog efficiency.
Avalanche diode: Nyob rau hauv lub twj tso kua mis qhov chaw ntawm laser scalpel, avalanche diode siv avalanche breakdown nyhuv los ua kom muaj siab -lub zog kho qhov muag pulses, thiab nws qhov rov qab tawg voltage yuav tsum ruaj khov siab tshaj 200V los xyuas kom meej stability ntawm laser tso zis.
3, Cov qauv kev nyab xeeb: Los ntawm kev ua raws li kev kho mob qib ntawv pov thawj
Cov cuab yeej kho mob diodes yuav tsum tau ua raws li cov ntaub ntawv pov thawj kev nyab xeeb kom ntseeg tau tias tus neeg mob muaj kev nyab xeeb. Piv txwv li:

Kev ntsuam xyuas biocompatibility: Cov diodes hauv cov khoom siv cog qoob loo yuav tsum dhau ISO 10993 tus qauv ntsuas los ua pov thawj tias lawv cov ntaub ntawv tsis yog - tshuaj lom thiab tsis ua xua.
Electromagnetic compatibility (EMC): Cov khoom siv kho mob diodes yuav tsum ua tau raws li IEC 60601-1-2 tus qauv, thiab cov hluav taws xob cuam tshuam hauv 150kHz-30MHz zaus band yuav tsum qis dua 40dB μ V kom tsis txhob cuam tshuam nrog lwm yam khoom siv kho mob.
Kev txheeb xyuas kev ntseeg tau: Cov qib kho mob diodes yuav tsum dhau AEC-Q101 daim ntawv pov thawj (kho kho dua tshiab ntawm cov qauv siv hluav taws xob hauv tsheb), thiab tom qab ua haujlwm tas li rau 1000 teev ntawm qhov kub siab ntawm 125 degree, parameter drift yuav tsum tsawg dua 5%.