Design techniques for low-voltage analog TUters In CMOS technologies are discussed. The use of OTA-C implementation techniques towards low power supply voltages (3 V and below) requires special source degeneration and input signal folding techniques. Firstly, design techniques to achieve Pull CMOS continuous-time filters with low distortlon (Total harmonic distortion c -50 dB) and low power sup...

A family of CMOS operational transconductance amplifiers (OTAs) has been designed for very small ’s (of the order of nanoamperes per volt) with transistors operating in moderate inversion. Several OTA design schemes such as conventional, using current division, floating-gate, and bulk-driven techniques are discussed. A detailed comparison has also been made among these schemes in terms of perfo...

−The design and implementation of a CMOS continuous-time follow−the−leader−feedback (FLF) filter is described. The filter is implemented using a fully−differential linear, low voltage and low power consumption operational transconductance amplifier (OTA) based on a source degeneration topology. PSpice simulations using a standard TSMC 0.18μm CMOS process with 2V power supply have shown that the...

In this paper a CMOS-based circuit for realization of high-performance current mode current differencing transconductance amplifier (CDTA) is demonstrated. This circuit provides the advantage of a wide frequency bandwidth and very small input terminal impedance. Some voltage and current mode applications using this element have already been reported in literature .It provides linear and non-lin...

We show that the operational transconductance amplifier (OTA), as the active element in basic bnilding blocks, can be efficiently used for programmable nonlinear continuous-time function synthesis. Two efficient nonlinear function synthesis approaches are presented. The first approach is a ratiossaf approximation and tbe second is a piecewise.linear approach. Test circuits have been fabricated ...

This paper presents a new voltage-mode elliptic band-pass filter based on multiple-input transconductor (MI-OTA). The MI-OTA’s structure employs the MOS transistor technique that simply enables to increase number of OTA’s inputs without increasing current branches or differential pairs. MI-OTA features high linearity over wide input range with compact and simple CMOS structure. From advantage m...