Ka Nānā ʻana i nā Hewa ʻŌnaehana o ka Photodetector

Ka Nānā ʻana i nā Hewa ʻŌnaehana o ka Photodetector

Hoʻolauna i nā kumu hoʻohuli o nā hewa ʻōnaehana maMea ʻike kiʻi

ʻO nā manaʻo kikoʻī no ka hewa ʻōnaehana: 1. Ke koho ʻana i nā ʻāpana:nā photodiode, nā mea hoʻoikaika hana, nā pale, nā capacitor, nā ADC, nā ics lako mana, a me nā kumu uila kuhikuhi. 2. Kaiapuni hana: Ka mana o ka mahana a me ka haʻahaʻa, a pēlā aku. 3. Hilinaʻi ʻōnaehana: Paʻa ʻōnaehana, hana EMC.

Ka Nānā ʻana i nā Hewa o ka ʻōnaehana o nā Photodetectors

1. Photodiode: I loko o kahiʻike ʻana i ka photoelectricʻōnaehana, ka mana o nā photodiodes ma nā hewa oʻōnaehana photoelectricua hōʻike nui ʻia ma nā ʻano aʻe:

(1) ʻIkepili (S)/ Hoʻonā: ʻO ka lakio o ka hōʻailona hoʻopuka (voltage/current) e piʻi ana △y i ka hoʻonui hoʻokomo △x e hoʻoulu ai i ka hoʻonui hoʻopuka △y. ʻO ia hoʻi, s=△y/△x. ʻO ka ʻikepili/hoʻonā ke kūlana mua no ke koho ʻana i ka sensor. Hōʻike kūikawā ʻia kēia palena ma ka pilina pololei o nā photodiodes ma ke ʻano he au pouli, a ma ka hōʻike kikoʻī o nā photodetectors ma ke ʻano he mana like walaʻau (NEP). No laila, ʻo ka loiloi kumu loa o ka hewa ʻōnaehana e koi ana i ka ʻikepili (S)/ hoʻonā e ʻoi aku ka kiʻekiʻe ma mua o ke koi hewa maoli i mea e hoʻokō ai i nā koi hewa o ka ʻōnaehana photoelectric holoʻokoʻa, no ka mea, pono e noʻonoʻo ʻia ka hopena hewa i hoʻokumu ʻia e nā mea i ʻōlelo ʻia ma hope.

(2) Linearity (δL): Ke kekelē o ka linearity o ka pilina quantitative ma waena o ka output a me ka input o ka photodetector. ʻO yfs ka output piha piha, a ʻo △Lm ka ʻokoʻa kiʻekiʻe loa o ka linearity. Hōʻike kūikawā ʻia kēia ma ka linearity a me ka linear saturation light power o ka photodetector.

(3) Paʻa/Hana hou ʻia: Loaʻa i ka photodetector kahi kūlike ʻole o ka hoʻopuka no ka hoʻokomo like ʻole, ʻo ia hoʻi kahi hewa maʻamau. Ua noʻonoʻo ʻia ka ʻokoʻa nui loa o nā hahau i mua a me hope.

(4) Hysteresis: ʻO ke ʻano kahi i ʻole e pili ai nā piʻo hiʻohiʻona input-output o kahi photodetector i kona hele ʻana i mua a i hope.

(5) Ka neʻe ʻana o ka mahana: ʻO ka hopena o kēlā me kēia loli 1℃ i ka mahana ma ka loli hoʻopuka o ka photodetector. ʻO ka ʻokoʻa neʻe ʻana o ka mahana △Tm i hoʻokumu ʻia e ka neʻe ʻana o ka mahana ua helu ʻia ma o ka helu ʻana o ka neʻe ʻana o ka mahana o ka pae mahana hana △T.

(6) Ka holo ʻana o ka manawa: ʻO ke ʻano kahi e loli ai ka hopena o kahi photodetector i ka hala ʻana o ka manawa ke noho mau ka loli hoʻokomo (ʻo nā kumu nui ma muli o nā loli i kona ʻano hoʻonohonoho ponoʻī). Ua helu ʻia ka mana deviation piha o ka photodetector ma ka ʻōnaehana ma o ka huina vector.

2. Nā mea hoʻonui hana: Nā Palena Koʻikoʻi e Hoʻopilikia ana i ka hewa o ka ʻōnaehana Nā Mea Hoʻonui Hana Voltage offset Vos, Vos temperature drift, input offset current Ios, Ios temperature drift, input bias current Ib, input impedance, input capacitance, walaʻau (input voltage walaʻau, input current walaʻau) Design gain thermal walaʻau, power supply rejection ratio (PSRR), common-mode rejection ratio (CMR), open-loop gain (AoL), gain-bandwidth product (GBW), slew rate (SR), establishment time, total harmonic distortion.

ʻOiai ʻo nā palena o nā amplifiers hana he mea nui ia o kahi ʻāpana ʻōnaehana e like me ke koho ʻana o nā photodiodes, ma muli o nā palena o ka wahi, ʻaʻole e wehewehe ʻia nā wehewehe kikoʻī a me nā wehewehe ʻana ma aneʻi. I ka hoʻolālā maoli ʻana o nā photodetectors, pono e loiloi ʻia ka mana o kēia mau palena ma nā hewa ʻōnaehana. ʻOiai ʻaʻole hiki i nā palena āpau ke loaʻa ka hopena koʻikoʻi i nā koi o kāu papahana, ma muli o nā hiʻohiʻona noi maoli a me nā koi like ʻole, e loaʻa nā hopena like ʻole o nā palena ma luna nei i nā hewa ʻōnaehana.

Nui nā palena no nā mea hoʻonui hana. No nā ʻano hōʻailona like ʻole, hiki ke kālele ʻia nā palena nui e hoʻokumu ana i nā hewa ʻōnaehana ma nā hōʻailona DC a me AC: Nā hōʻailona loli DC Ka uila hoʻokomo offset Vos, ka drift mahana Vos, ke au hoʻokomo offset Ios, ke au bias input Ib, ka impedance input, ka walaʻau (ka walaʻau voltage input, ka walaʻau au input, ka walaʻau thermal loaʻa design), ka lakio hōʻole mana (PSRR), ka lakio hōʻole mode maʻamau (CMRR). Hōʻailona loli Ac: Ma waho aʻe o nā palena i luna, pono e noʻonoʻo ʻia kēia mau mea: ka capacitance input, ka loaʻa open-loop (AoL), ka huahana gain-bandwidth (GBW), ka helu slew (SR), ka manawa hoʻokumu, a me ka distortion harmonic holoʻokoʻa.