Title: Method for improving stability of operation amplifier circuit under determined frequency
Application Number: 01105505 Application Date: 2001.02.28
Publication Number: 1327303 Publication Date: 2001.12.19
Approval Pub. Date: Granted Pub. Date: 2004.05.19
International Classifi-cation: G06G7/12,H03F1/34
Applicant(s) Name: Langying Science and Technology Co., Shanghai Address: 200063
Inventor(s) Name:
Attorney & Agent: zuo yibeng
Abstract:
     The method of improving the stability of operation amplifier comprises adding serial RC branch to the positive feedback loop, changing the negative feedback loop into parallel RC branch, connecting parallel RC circuit between the positive input and earth and between the negative input and earth in case of virtual earth as reference, and changing the parallel RC circuit between the positive input and the virtual earth into serial equal RC circuit. The circuits of the present inventino are simple and reliable, and the present invention can ensure the stability of the operation amplifier circuit while raising the precision of the operational amplifier and raising the working frequency greatly.
Time: 11