本文選題：帶隙基準(zhǔn)電路　切入點(diǎn)：高階曲率補(bǔ)償　出處：《半導(dǎo)體技術(shù)》2017年02期

【摘要】：提出了一種新的曲率補(bǔ)償帶隙基準(zhǔn)電路,首先通過一個(gè)雙差分輸入放大器(DDIA)來產(chǎn)生一個(gè)絕對(duì)溫度互補(bǔ)電壓。然后通過這個(gè)電壓與另一個(gè)DDIA對(duì)曲率補(bǔ)償進(jìn)行微調(diào),得到一個(gè)高階曲率補(bǔ)償?shù)膸痘鶞?zhǔn)電壓。采用0.5μm CMOS工藝技術(shù)對(duì)文中所設(shè)計(jì)的電路進(jìn)行流片驗(yàn)證,得到在-40~125℃內(nèi),帶隙基準(zhǔn)電壓源的溫度系數(shù)為4.1×10-6/℃,當(dāng)電源電壓在2.7~5 V時(shí),帶隙基準(zhǔn)電路的輸出電壓穩(wěn)定在1.3 V左右。此外,該電路具有較高的電源抑制比(PSRR),當(dāng)頻率小于1 k Hz時(shí),其電源抑制比為-82 d B,而當(dāng)頻率在10 k Hz時(shí),其電源抑制比為-75 d B。
[Abstract]:In this paper, a new curvature compensated bandgap reference circuit is proposed, in which an absolute temperature complementary voltage is generated by a double differential input amplifier (DDIA), and then the curvature compensation is fine-tuned with another DDIA. A bandgap reference voltage with high order curvature compensation is obtained. The designed circuit is verified by using 0.5 渭 m CMOS technology. The temperature coefficient of the bandgap voltage reference source is 4.1 脳 10 ~ (-6) / 鈩，

本文編號(hào)：1655650