A MOSFET-C variable equalizer circuit with simple on-chip automatic tuning

Novel MOS-C balanced-input balanced-output filter using the current feedback operational amplifier

“…Recently, MOS-C ® lters using the CFOA have been introduced in the literature (Chen et al 1995). It is well known that the balanced-input, balanced-output MOS-C ® lters using conventional op.-amps su er from the ® nite gain bandwidth of the op.-amps (Ismail 1985, Ismail et al 1989, Sakurai et al 1992, Banu and Tsividis 1983and Tsividis et al 1986.…”

Harmonic distortion of 2-MOS structures for MOSFET-C filters implemented with n-type unstrained and strained FINFETS

“…The drain and the source of the transistor play the role of the resistor terminals and the gate voltage (V GS ) controls the resistance. The application of MOSFET transistors instead of resistors reduces the die area and allows for on-chip tuning resistance compensating for process and temperature variations [8]. Considering that on-resistances (R ON ) from some decades to a few hundred kilohms are generally required in such filters, long channel devices are usually applied [6].…”

A 4th order fully integrated active RC complex filter with novel automatic tuning systems

“…In Ref. [7], a simple method is proposed, but the accuracy relies on the external high precision passive element. This letter introduces a 4th order active RC complex filter with novel automatic tuning systems.…”