Martincorena Arraiza, MaiteCruz Blas, Carlos Aristóteles de laLópez Martín, AntonioCarlosena García, Alfonso2023-09-262023-09-262022Martincorena-Arraiza, M., De La Cruz-Blas, C. A., Lopez-Martin, A., Carlosena, A. (2022) Micropower class AB low-pass analog filter based on the super-source follower. IEEE Transactions on Circuits and Systems II: Express Briefs, 69(9), 3684-3688. https://doi.org/10.1109/TCSII.2022.3176474.1549-774710.1109/TCSII.2022.3176474https://academica-e.unavarra.es/handle/2454/46412An improved class AB version of the super source follower is used to implement a compact and power-efficient second order analog low-pass filter. The proposed circuit achieves a 41% power reduction as well as an improvement in linearity and pass band gain with respect to its class A counterpart. Measurement results of a test chip prototype fabricated in a 180 nm CMOS technology show a power consumption ranging from 50.3 μW to 85.27 μW for cutoff frequencies from 600 kHz to 890 kHz, with a supply voltage of ±0.75 V. A third order intermodulation distortion of −35.34 dB (for an input signal of 0.4 mV pp and 350 kHz) and a THD of −69.7 dB (for an input signal of 0.4 mV pp and 100 kHz) are measured, which results in an improvement with respect to the conventional class A version of 13.98 dB and 43.6 dB, respectively. The silicon area is 0.0592 mm 2 (using external capacitors).application/pdfeng© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Analog filterLow-pass filterClass ABSuper source-followerVoltage followerAnalog CMOS circuitsLow-powerQuasi-floating-gate MOSFETArtículo / Artikulua2023-09-26Acceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess