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Article title BASIC PARAMETERS OF OPERATIONAL AMPLIFIERS WITH PARAPHRASE OUTPUT AT ASYMMETRY TRANSFER COEFFICIENT OF CIRCUITS OF NEGATIVE FEEDBACK
Authors S.V. Kryukov, I.V. Pahomov, S.S. Belich
Section SECTION II. IP-CORES MIXED-SIGNAL SYSTEM ON CHIP
Month, Year 02, 2013 @en
Index UDC 621.375
DOI
Abstract Parameters of operational amplifiers (OA) with paraphrase output at finite value loop gain and asymmetry of transfer ratio on chain dual-link negative feedback are considered. The generalized functional diagram of operational amplifier with paraphrase output are shown. The analytical expressions for the main parameters of the OA, which describe their properties in a wide range of loop gain and feedback resistors are given. Non-identity of the loop gain has a significant impact on the transfer ratio of the input signal to the output of OA are shown. The formulas allowing to calculate the voltage gain Ku of the operational amplifier with two chains of negative feedback at loop gain asymmetry are given. The formula can be used to calculate the Ku at high frequency range by replacing the values of loop gains to complex transfer ratio are shown.

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Keywords Fully differential operational amplifier; paraphrase output; gain.
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