LMV324IDR Sabon faci na asali SOP14 Chip 4 tashar ƙarancin ƙarfin fitarwa mai aiki da haɓaka kayan aikin IC

Dangane da ma'auni na haɗe-haɗe amplifiers aiki, ana iya raba su zuwa nau'ikan masu zuwa.
1, Maƙasudi na gabaɗaya: babban maƙasudin aiki na gaba ɗaya an tsara shi don dalilai na gaba ɗaya.Babban fasalin wannan nau'in na'urar shine ƙananan farashi, yawan adadin samfurori, kuma alamun aikinta na iya dacewa da amfani da gaba ɗaya.Misali μA741 (op-amp guda daya), LM358 (dual op-amp), LM324 (op-amps hudu), da bututun tasirin filin kamar matakin shigar da LF356 sune irin wannan.A halin yanzu sune mafi yawan amfani da haɗe-haɗe amplifiers aiki.

2, Nau'in Juriya Mai Girma
Wannan nau'in haɗakarwar amplifier na aiki yana da ƙayyadaddun yanayin shigar da yanayin bambance-bambancen sosai da ƙaramin ƙaramar shigar da halin yanzu, gaba ɗaya kawar>1GΩ~1TΩ, tare da IB na ƴan picoamps zuwa dubun picoamps.Babban ma'auni don cimma waɗannan maƙasudin shine a yi amfani da halayen babban abin shigar da FETs don samar da matakan shigar da banbanta na op-amp.Tare da FET a matsayin matakin shigarwa, ba kawai babban shigarwar shigarwa ba, ƙarancin shigarwar halin yanzu, da fa'idodin babban gudu, faɗaɗa, da ƙaramar amo, amma ƙarfin ƙaddamar da shigarwar yana da girma.Na'urori masu haɗaka gama gari sune LF355, LF347 (op-amps huɗu), da babban abin shigar da shigar CA3130, CA3140, da sauransu. [2]

3, Nau'in drift mai ƙarancin zafin jiki
A cikin ingantattun kayan aiki, gano siginar rauni, da sauran na'urorin sarrafawa ta atomatik, ana so koyaushe cewa wutar lantarki na op-amp ya kamata ya zama ƙarami kuma kada ya canza tare da zafin jiki.Ƙarƙashin zafin jiki mai ɗorewa na amplifiers an tsara shi don wannan dalili.OP07, OP27, AD508, da ICL7650, na'urar ƙwanƙwasa-tsalle-tsalle mai ƙanƙan da MOSFETs, wasu daga cikin madaidaicin madaidaicin, ƙarancin zafin jiki-drift na amplifiers da ake amfani da su a yau.

4, Nau'in saurin sauri
A cikin sauri A / D da D / A masu juyawa da masu haɓaka bidiyo, ƙimar juyawa SR na haɗaɗɗen op-amp dole ne ya zama babba kuma haɗin kai-riban bandwidth BWG dole ne ya zama babban isa kamar gama-gari hadedde op-amps ba su dace da. aikace-aikace masu sauri.Op-amps mai sauri yana da alaƙa da ƙimar juzu'i mai girma da amsawar mitoci mai faɗi.Op-amps na yau da kullun sune LM318, μA715, da sauransu, wanda SR = 50 ~ 70V / mu, BWG> 20MHz.

5,Ƙananan nau'in amfani da wutar lantarki.
A matsayin babbar fa'idar da'irar lantarki, haɗin kai shine yin hadaddun da'irori ƙanana da nauyi, don haka tare da faɗaɗa kewayon aikace-aikacen kayan aikin šaukuwa, ya zama dole a yi amfani da ƙarancin wutar lantarki mai ƙarancin wutar lantarki, ƙarancin wutar lantarki na lokacin amplifier mai aiki.Abubuwan amplifiers masu aiki da aka saba amfani da su sune TL-022C, TL-060C, da dai sauransu, wanda ƙarfin ƙarfin aiki shine ± 2V ~ ± 18V, kuma amfani na yanzu shine 50 ~ 250μA.Wasu samfurori sun kai matakin μW, misali, wutar lantarki na ICL7600 shine 1.5V, kuma yawan wutar lantarki shine 10mW, wanda za'a iya yin amfani da shi ta hanyar baturi daya.

6, High ƙarfin lantarki da kuma high iko iri
Wutar lantarki mai fitarwa na amplifiers mai aiki yana iyakancewa ta hanyar samar da wutar lantarki.A cikin na'urorin haɓakawa na yau da kullun, matsakaicin ƙarfin fitarwa yawanci ƴan dubun volts ne kuma abin da ake fitarwa a halin yanzu kaɗan ne kawai na milliamps.Don ƙara ƙarfin fitarwa ko don ƙara yawan fitarwa na yanzu, haɗaɗɗen op-amp dole ne a ƙara shi a waje ta hanyar da'ira.Babban ƙarfin lantarki da babban na yanzu hadedde op amps na iya fitar da babban ƙarfin lantarki da babban halin yanzu ba tare da wani ƙarin kewayawa ba.Misali, D41 hadedde op-amp na iya samar da wutar lantarki har zuwa ± 150V kuma μA791 hadedde op-amp na iya isar da igiyoyin fitarwa har zuwa 1A.

7,Nau'in sarrafa shirye-shirye
A cikin aiwatar da kayan aiki, akwai matsala ta kewayo.Don samun ƙayyadadden fitarwa na ƙarfin lantarki, ya zama dole don canza haɓakar haɓakar haɓakar aiki.Misali, amplifier na aiki yana da girma har sau 10, lokacin da siginar shigarwa ta kasance 1mv, ƙarfin wutar lantarki ya zama 10mv, lokacin da ƙarfin shigarwa ya kasance 0.1mv, abin da ake fitarwa kawai 1mv ne kawai, don samun 10mv, dole ne girman girman ya kasance. canza zuwa 100. Misali, PGA103A, ta hanyar sarrafa matakin fil 1,2 don canza haɓakawa.