基本信息:
- 专利标题： 可变增益放大器
- 专利标题（英）：AMPLIFIER WITH ADJUSTABLE GAIN
- 申请号：CN201611078799.1 申请日：2016-11-30
- 公开(公告)号：CN107947748A 公开(公告)日：2018-04-20
- 发明人： 林致煌
- 申请人： 智原科技股份有限公司
- 申请人地址： 中国台湾新竹市
- 专利权人： 智原科技股份有限公司
- 当前专利权人： 智原科技股份有限公司
- 当前专利权人地址： 中国台湾新竹市
- 代理机构： 北京市柳沈律师事务所
- 代理人： 王珊珊
- 优先权： 105133010 2016.10.13 TW
- 主分类号： H03G3/30
- IPC分类号： H03G3/30 ; H03G1/00
An amplifier with adjustable gain including a plurality of differential amplifiers and an output stage circuit is provided. Each of the differential amplifiers has at least one differential pair, twocurrent terminals of each of the differential pairs are coupled by a connection structure, and the connection structure provides a negative feedback resistance. The differential amplifiers commonly receive a differential input signal pair, and output terminals of the differential amplifiers are coupled together. The output stage circuit inverts a voltage on the output terminals of the differentialamplifiers to generate an output voltage. A direct current gain of the amplifier with adjustable gain is determined by adjusting at least one of working numbers of the differential amplifiers and thedifferential pairs.
公开/授权文献:
- CN107947748B 可变增益放大器 公开/授权日：2020-06-09