This paper presents, a new and simple CMOS realization of VDTA is presented. And the proposed block use for the design of an electronically tunable Tow-Thomas biquad filter. The presented filter is constructed using two VDTAs, two capacitors all are grounded. This circuit simultaneously realizes Low Pass and Band Pass filter responses, without changing the circuit topology. Tow-Thomas biquad fi...

Abstract: This paper presents a brief introduction and review of some prominent current mode building blocks, which have been finding prominent attention in the area of analog signal processing. Some exemplary hardware implementations of a selected number of building blocks such as op-amp, OTA, CCI, CCII, FTFN, DDA, CFOA, CCIII, DDCC, DOCC, MOCC, DVCC, ICCII, FDCCII, OTRA, CDBA and CDTA have be...

A visible wavelength linear photosensor featuring a pixel size of 3mm has been designed for fabrication using commercial 0.25 mm CMOS technology. For the photo-sensing element, the design uses a special ‘‘deep N-well’’ in P-epi diode offered by the foundry for imaging devices. Pixel reset is via an adjacent p-FET, thus allowing high reset voltages for a wide pixel voltage swing. The pixel volta...

This paper proposes a novel sinusoidal oscillator using a current differencing transconductance amplifier (CDTA) and four passive components. The proposed oscillator provides independent control of the oscillation frequency by using a resistor without disturbing the oscillation condition, and exhibits desirable active and passive sensitivities. This study proposes an improved topology using a c...

Sense amplifiers plays an important role in memories like Dynamic Random Access (DRAM) and Static Random Access (SRAM) for read and write operations. A sense amplifier compares the bit line voltage and its complement amplifies it to rail to rail output voltages. In this project, we mainly concentrated on the write operation. Sense amplifier is one of the peripheral circuits in memories that are...

This paper is in continuation with the very recent work of Prasad et al. [14], wherein new realizations of grounded and floating positive inductor simulator using current differencing transconductance amplifier (CDTA) are reported. The focus of the paper is to provide alternate realizations of lossless, both positive and negative inductor simulators (PIS and NIS) in grounded form using z-copy c...

this paper proposes a low voltage (±0.55v supply voltage) low power (44.65µw) high common mode rejection ratio (cmrr) differential amplifier (d.a.) with rail to rail input common mode range (icmr), constant transconductance (gm) and enhanced frequency performance. its high performance is obtained using a simple negative averaging method so that it cancels out the common mode input signals at th...

in this paper, a low voltage and low power (lv/lp) operational transconductance amplifier (ota) using fgmos (floating-gate mos) transistor is proposed. the relative tuning range of 50 is achieved in this ota while only consumes 40 µw with 1.0 v supply voltage in tsmc 0.18 µm cmos technology. the simulation results of the proposed ota show an open loop gain of 30.2 db and a unity gain frequency ...

Abstract. This paper proposes admittance matrix models to approach the behavior of six modern multiport functional blocks called: differential difference amplifier, differential difference operational floating amplifier, differential difference operational mirror amplifier, differential difference current conveyor, current backward transconductance amplifier and current differencing transconduc...

This article presents design of a basic current-mode building block for analogue signal processing, named as Current Controlled Current Differencing Transconductance Amplifier (CCCDTA). Its parasitic resistances at two current input ports can be controlled by an input bias current. Owing to working in current-mode of all terminals, it is very suitable to use in a current-mode signal processing,...