Self-biasing structure, variable current amplifier and electronic device

• Main Authors: WANG LEI, HAO JUNXIANG, WANG XUEMENG, DAI JIAN, SONG XUEFENG, ZHAO GUANGYING, CHENG LIXIN, CUI LIANG, LIU FEIFEI, FENG HANCHEN, YANG XUDA, CHEN NANTING, ZENG YANSHENG, YANG NAN, REN JIAN, YANG QI, WANG HAILONG, WU HAOYANG, ZHANG ZHONGSHAN
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

The invention provides a self-bias structure, a variable current amplifier and an electronic device wherein the self-bias structure comprises a bypass capacitor, an insertion source resistor, a plurality of pads and a plurality of off-chip resistors; one end of the bypass capacitor is connected with the grounding hole, and the other end is connected with the source electrode of the transistor; one end of the insertion source resistor is connected with the grounding hole; the plurality of bonding pads at least comprise five bonding pads, namely a first bonding pad, a second bonding pad, a third bonding pad, a fourth bonding pad and a fifth bonding pad, one end of the first bonding pad is used for being connected with a source electrode of the transistor, and one end of the second bonding pad is connected with the other end of the insertion source resistor; a third bonding pad and a fourth bonding pad are respectively arranged at two ends of the first off-chip resistor; a fifth bonding pad is arranged at one en