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An 8-channel chopper-stabilized analog front-end amplifier (AFEA) is designed in 65-nm CMOS for continuous EEG signal acquisition. The AFEA is composed of eight capacitively coupled chopper instrumentation amplifiers (CCCIAs) with chopper-stabilized circuits and band-pass filters, a multiplexed transconductor, and a transimpedance amplifier. The CCCIA employs an inverter-based folded-cascode amplifier...
This paper describes the design of multifunction second order voltage-mode filter using the voltage differencing differential difference amplifier (VDDDA) as active element. The internal construction of VDDDA based on the 0.25um TSMC CMOS technology is used for simulation and testing. The proposed filter is sort of three inputs-single output (TISO) multifunction filter. It consists of single VDDDA,...
In this paper, a voltage-mode universal biquadratic filter with high input impedance is presented. The proposed circuit has three input terminals and uses three differential voltage current conveyors (DVCCs), two grounded capacitors and two resistors. It can realize all the standard filter functions that are highpass, bandpass, lowpass, notch, and allpass filters by the adjustments of input voltage...
A new current-controlled current-mode universal filter with three inputs and single output employing two translinear current conveyor and two grounded capacitors is presented. The proposed circuit provides low-pass, band-pass, high-pass, bandstop and all-pass current responses from the same configuration at a high impedance terminal. The filter also offers independent electronic control of the natural...
A new current-mode current-controlled single-input multiple-output universal filter, which employing only three translinear current conveyors and two grounded capacitors. The proposed configuration provides lowpass, bandpass, highpass, bandstop and allpass current responses at a high output impedance terminal, which enable easy cascadability of the circuit. The circuit parameters natural frequency...
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