Band-gap reference current source

• Main Authors: ZHANG YE, ZHA MENGFAN, SONG ZIQI, ZHAI SHIQI, ZHAI XIANXU, GAN CHUNZHAO, TIAN JINAN, TAO WEN, WANG TIANCHEN, HE DIAN, WANG DONG, WU YONG, LI QING, WANG WENQIANG
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

The invention discloses a band-gap reference current source, which comprises an amplifying circuit, a second amplifying circuit, a third amplifying circuit, a fourth amplifying circuit and a fourth amplifying circuit, the grid electrode of the first NMOS tube is connected with the second end of the first current mirror, and the drain electrode of the first NMOS tube is the output end of the band-gap reference current source; the current generating circuit comprises a first triode, a second triode, a first resistor, a second resistor, a third resistor and a fourth resistor; the collector of the first triode is connected with the first end of the first current mirror, the base is connected with the base of the second triode through the first resistor, and the emitter is grounded through the second resistor and the third resistor in sequence; the collector electrode of the second triode is connected with the second end of the first current mirror, the base electrode is connected with the source electrode of the