Slew rate enhanced operational amplifier suitable for restraining electromagnetic interference
A technology of operational amplifier and slew rate enhancement, which is applied to DC-coupled DC amplifiers, differential amplifiers, improved amplifiers to reduce noise effects, etc., can solve the problems of electromagnetic interference and performance parameter drift of high-gain operational amplifiers, and achieve enhanced Slew rate, the effect of improving the suppression ability
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[0014] The technical solutions of the present invention will be further detailed below in conjunction with the drawings and specific implementations.
[0015] Specific description of the embodiment of the present invention: select the gate input terminals Vp of the second to third PMOS transistors M1a, M1b and the gate input terminals Vn of the fourth to fifth PMOS transistors M2a, M2b, and input the differential mode signals Vin+ and Vin, respectively -, After the amplification of the Recyclingfoldedcascode amplifier stage, and then through the electromagnetic interference suppression stage to filter spurious signals, while the current mirror enhances the slew rate, and then outputs the signal through the high voltage swing output terminal Vout. Finally, it achieves the purpose of improving the EMI suppression capability and enhancing the slew rate of the amplifier under the same power consumption condition while maintaining the stability of the amplifier.
[0016] The amplifier i...
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