Title：Analog voltage buffer circuit with high frequency compensation
Country：China
Patent No.：201410359994.6
Legal Status：Authorized
Inventor：Fule Li, Chun Zhang, Zhihua Wang
Assignee：Tsinghua University
Address：Mailbox No. 82, Beijing 100084
Filing Date：2014-07-25
Issue Date：2017-09-22
Abstract：
The invention discloses an analog voltage buffer circuit with high-frequency compensation. The analog voltage buffer circuit with the high-frequency compensation comprises a main voltage buffer, a main load network connected with the main voltage buffer, a high-frequency compensation circuit connected with the main voltage buffer and comprising an auxiliary voltage buffer, and an auxiliary load network connected with the auxiliary voltage buffer, and the auxiliary voltage buffer is connected with the main voltage buffer through the auxiliary load network, wherein the high-frequency compensation circuit has no influence on the main voltage buffer during low frequency or direct current and leading the main voltage buffer to be subjected into current compensation during high frequency. The analog voltage buffer circuit with the high-frequency compensation can convey compensation currents into the main voltage buffer during high frequency to compensate load current effects of the main load network for performing current compensation, improve linearity under high-frequency input of the voltage buffer and expand operation bandwidth.
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